93 



* 857. T. Thorell. Descriptions of the Aranese col- 

 lected in Colorado in 1875 by A. S. Packard, Jr., M.D. p. 



477-528. 



Enumerates 31 spp. of 20 gen. and 9 fam.; describes Tetragnalha elon- 

 gata [Epeiroidae]; Linyphia orophila n. sp., Erigone cacuminum n. sp., E. 

 sirabo n. sp., Steatoda disfincta n. sp. [Theridioidae]; Pholcus pullulus 

 [Scytodoidae] ; Gnapkosa conspersa n. sp., G. scudderi n. sp., Pi-osthesima 

 melanchoUca n. sp. [Drassoldae] ; Xi/sticus cunctator n. sp., Oxyptila con- 

 spurcata n. sp., Diaea lepida n. sp., Philodromus virescens n. sp., Ph. inquis- 

 itor n. sp. [Thomisoidae]; Lycosa sternalis n. sp., L. concinna n. sp., L. 

 uncata n. sp., L. tristis n. sp., L. indagatrix n. sp., L. impavida n. sp., L. 

 iracunda n. sp., L. sinistra n. sp., Tarentula modesla n. sp., T. scalaris n. sp. 

 [Lycosoidae]; Phidippus coloi^adensis n. sp. [Attoidae] := 25 (23 new) spp. 

 Araneae ; Mitopus biceps n. sp. [Phalangioidae] ::r: 1 n. sp. Opiliones. 

 Says (on p. 504): "I fully agree with those who think that when an author 

 has named a certain species as the type of a genus proposed by him, the 

 generic name in question ought to be kept for that species; ... to name 

 one or more species as examples of a genus is not the same as to declare 

 them to be typical species of it." 



* 858. James H. Emerton. Descriptions of Two New 

 Spiders from Colorado, p. 528-529, fig. 18, 19. 



Describes Epeira acideata ? (fig. 18) and Drassus coloradensis d (fig. 19, 

 palpus) = 2 n. spp. 



* 859. S. H. ScuDDER. The First Discovered Traces of 

 Fossil Insects in the American Tertiaries. p. 741-762. 



Refers to earlier publications and makes some corrections of them. 

 Describes Camponotus vetus, Liometopum plngue [Formicidae]; Ichneumon 

 petrinus [Ichneumonidae] = 3 n. spp., 3 gen., 2 f;im. Hymenoptera ; 

 Culex proavitus, Corethra exita [Culicidae]; Chironomus depletus, Ch. patens 

 [Chironomidae]; Lasioptera 7-ecessa, Lithomyza, L. condila [Cecidomyidae] ; 

 Dicranomyia stigmosa, D. primitiva, D. rostrata, Spiladomyia, S. simplex, 

 Pronophlebia, P. rediviva, Cyttaromyia, C. fenestrata, Tipula decrepila, T. 

 tecta [Tipulidae]; Mycetophila occultata, Sackenia, S. arcuata, Gnorisle den- 

 toni [Mycetophilidae]; Acrocera hirsuta [Cyrtidae] ; Eristalis lapldeus 

 [Syrphidae] ; Musca ascarides, M. bibosa, M. liydropica, M. vinculata 

 [Muscidae]; Hetcromyza detecta [Helomyzidae] = 24 n. spp., 17 (5 new) 

 gen., 9 fam. Diptera; Aphana atava, Delphax senilis [Fulgoridae] ; Tet- 

 tigonia oblccta, Byfhoscopus lapidescens [Tettigonidae] ^ 4 n. spp., 4 gen., 

 2 fam. Horaoptera; Pachymerus petrensis [Lygaeidae] ^ 1 n. sp. 

 Heteroptera ; Phryganea operta [Phryganidae] = 1 n. sp. Neuro- 

 ptera. " Besides the [numerous] insects mentioned under the families, but 

 not referred to genera, the collection contains forty-six species," of which 

 some account is given. In addition a list is given of the 9 si)p. of 9 gen. 

 of 6 fam. of Coleoptera, and the 3 spp. of 3 gen. of Physopoda pre- 

 viously described from the same localities. 



