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Diagnoses of new mollusks from the survey of the Mexican boundary
Volume 18, Page 1
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Diagnoses of new Tertiary fossils from the southern United States
Volume 18, Page 21
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Priodesmus, a new genus of Diplopoda from Surinam
Volume 18, Page 53
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On Ceophilus attenuatus, Say, of the class Chilopoda
Volume 18, Page 59
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An arrangement of the Geophilidae a family of Chilopoda
Volume 18, Page 63
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Description of a new species of golden beetle from Costa Rica
Volume 18, Page 77
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Two new species of beetles of the tenebrionid genus Echocerus
Volume 18, Page 79
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Description of a new species of pipefish (Siphostoma scovelli) from Corpus Cristi, Texas
Volume 18, Page 113
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Description of a new species of snake (Tantilla eiseni) from California
Volume 18, Page 117
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Description of a new species of ground warbler from eastern Mexico
Volume 18, Page 119
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East African Odonata, collected by Doctor W. L. Abbott
Volume 18, Page 121
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Notes on the Odonata from east Africa, collected by the Chanler Expedition
Volume 18, Page 143
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On the proper name of the gunnels or butterfishes
Volume 18, Page 147
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The differential characters of the syngnathid and hippocampid fishes
Volume 18, Page 153
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Notes on the synonymy of the Torpedinidae or Narcobatidae
Volume 18, Page 161
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The families of synentognathous fishes and their nomenclature
Volume 18, Page 167
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On the application of the name Teuthis to a genus of fishes
Volume 18, Page 179
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Notes on the nomenclature of Scymnus or Scymnorhinus, a genus of sharks
Volume 18, Page 191
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Notes on the genus Cephaleutherus of Rafinesque, and other rays with aberrant pectoral fins (Propterygia and Hieroptera)
Volume 18, Page 195
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Notes on characinoid fishes with ctenoid scales, with a description of a new Psectrogaster
Volume 18, Page 199
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The differential characters of characinoid and erythrinoid fishes
Volume 18, Page 205
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Notes on Orectolobus or Crossorhinus, a genus of sharks
Volume 18, Page 211
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Note on the fishes of the genus Characinus
Volume 18, Page 213
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The nomenclature of Rachicentron or Elacate, a genus of acanthopterygian fishes
Volume 18, Page 217
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The nomenclature of the fishes of the characinoid genus Tetragonopterus
Volume 18, Page 225
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List of the Lepidoptera collected in eastern Africa by Dr. W. L. Abbott, with descriptions of some apparently new species
Volume 18, Page 229
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List of Lepidoptera collected in Somali-land, East Africa, by Mr. William Astor Chanler and Lieutenant Von Hoehnel
Volume 18, Page 259
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List of the Lepidoptera from Aldabra, Seychelles, and other East African islands, collected by Dr. W. L. Abbott
Volume 18, Page 265
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Notes on asbestos and asbestiform minerals
Volume 18, Page 281
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Preliminary description of some new birds from the Galapagos Archipelago
Volume 18, Page 293
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The classification and geographical distribution of the pearly fresh-water mussels
Volume 18, Page 295
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Note on the occurrence of an armadillo of the genus Xenurus in Honduras
Volume 18, Page 345
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The genus Callinectes
Volume 18, Page 349
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Descriptions of two new species of fresh-water crabs from Costa Rica
Volume 18, Page 377
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Description of four new Triassic Unios from the Staked Plains of Texas
Volume 18, Page 381
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Revision of the North American Empidae.a family of two-winged insects
Volume 18, Page 387
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Preliminary diagnoses of new mammals from the Mexican border of the United States
Volume 18, Page 443
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Characters of a new American family of passerine birds
Volume 18, Page 449
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Catalogue of a collection of birds made by Doctor W. L. Abbott in Kashmir, Baltistan and Ladak, with notes on some of the species, and a description of a new species of Cyanecula
Volume 18, Page 451
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On birds collected by Doctor W. L. Abbott in the Seychelles, Amirantes, Gloriosa, Assumption, Aldabra, and adjacent islands, with notes on habits, etc., by the collector
Volume 18, Page 509
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Descriptions of two new subspecies of the downy woodpecker, Dryobates pubescens (Linnaeus)
Volume 18, Page 547
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Preliminary description of a new subgenus and six new species and subspecies of hares, from the Mexican border of the United States
Volume 18, Page 551
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Note on Plectroplites and Hypoplectrodes, genera of serranoid fishes
Volume 18, Page 567
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Catalogue of a collection of birds made by Doctor W. L. Abbott in easternTurkestan, the Thian-Shan Mountains, and Tagdumbash Pamir, central Asia, with notes on some of the species
Volume 18, Page 569
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Descriptions of three species of sand fleas (amphipods) collected at Newport, Rhode Island
Volume 18, Page 593
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Remarks on the synonymy of some North American scolytid beetles
Volume 18, Page 605
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Fossil jelly fishes from the Middle Cambrian terrane
Volume 18, Page 611
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Preliminary descriptions of a new genus and three new species of crustaceans from an artesian well at San Marcos, Texas
Volume 18, Page 615
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Description of a new genus and species of blind tailed batrachians from the subterranean waters of Texas
Volume 18, Page 619
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Description of a new stickleback, Gasterosteus gladiunculus, from the coast of Maine
Volume 18, Page 623
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Description of a new species of ant thrush from Nicaragua
Volume 18, Page 625
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Partial list of birds collected at Alta Mira, Mexico, by Mr. Frank B. Armstrong
Volume 18, Page 627
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On some reared parasitic hymenopterous insects from Ceylon
Volume 18, Page 633
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An annotated list of birds observed on the Island of Margarita, and at Guanta and Laguayra, Venezuela
Volume 18, Page 649
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List of Coleoptera collected on the Tana River and on the Jombene Range, East Africa, by Mr. William Astor Chanler and Lieutenant Ludwig von Höhnel, with descriptions of new genera and species
Volume 18, Page 687
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Contributions to the natural history of the Commander Islands. XI..The cranium of Pallas's cormorant
Volume 18, Page 717
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New species of North American Coleoptera of the family Scarabaeidae
Volume 18, Page 721
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List of the Lepidoptera collected in East Africa, 1894, by Mr. William Astor Chanler and Lieutenant Ludwig von Hohnel
Volume 18, Page 741
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Notes on the vampire bat (Diphylla ecaudata), with special reference to its relationships with Desmodus rufus
Volume 18, Page 769
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Description of a new species of bat of the genus Glossophaga
Volume 18, Page 779