BIBLIOGRAPHY. 



197 



DALL, Willia:m Healey — Continued. 



(lata sliowiDj; tlie direct iufluenco of similar 

 (■()ii(litii)]iR uiioii iiiilividuals of diverse origiD, 

 and tlio similarity of effects produced by the 

 same causes in widely diflereiit regions and 

 upon forms of different genetic origin. The 

 relations of the St. Helena Pachyotits are 

 shown by anatomical data to be with the 

 AVest African Achatinas, notwithstanding 

 their wide testaceous divergence. The Xeiiotes 

 of tlieGalaiiagoson the other hand are related to 

 North and Central .Vnurican Biiliimdus. The 

 Galapagos land shells are enumerated, their 

 anatomical characters elucidated, and their 

 synonymy worked out. The genitalia, denti- 

 tion and jaws of numerous species, and the 

 untigured shells of previously described spe- 

 cies are illustrated. JitiUmuhig nesioticus Dail 

 is described as new. The paper concludes 

 with a bibliogiaphy of the Galapagos land- 

 shell literature. 



Cook'8 lulet ami tlic region to the 



westward. 



Bull. U.S. Coast and Geod. Surv. Xo. 35, 

 Aug., 1896, pp. 162-170. 

 This article contains a summary of geograph- 

 ical and other notes on the region, made dur- 

 ing official explorations in the summer of 1895. 



On the American species of Cyre- 



noidea. 



Xautilus, X, Ifo. 5, Sept., 1896, pp. 51-52. 

 Three American sjiecies are known, besides 

 the original type from Senegal, of which Ci/re- 

 noidea floridana Dall, and C. caloosaensis Dall 

 are described as new. The types are in the 

 U. S. National Museum. 



Recent advances in malacology. 



Science (New series), IV, No. 100, Nov. 27, 



1896, pp. 770-773. 



This article contains a summary of recent 



malacological work not yet incorporated in the 



textbooks. It is based in part on work done 



in the XJ. S. National Museum. 



Pelecypoda. 



Textbook of Paleontology , by K. A. von 

 Zittel, revised edition, I, 1896, pp. 316-429. 

 In this contribution to the revised Text- 

 book the entire text has been rewritten, the 

 classification has been changed, the bibliogra. 

 phy brought up to date, and the modern view 

 of most ot the subjects included. The sub- 

 genus of Lucina, Prohicina Dall, of the Silu- 

 rian, is described as new. 



Report on the molliisks collected by 



the International Boundary Commis- 

 sion of the United States and Mexico, 

 1892-1894. 



Proc. 77. S. Xat. Mns.. xix. No. 1111, Jan. 

 27, 1897, pp. 333-349, pi. xxxi-xxxill. 

 This paper treats of the species chiefly col- 

 lected by Dr. E. A. Mearns, U. S. A., in the re- 

 gion referred to; summarizes the results of 

 previous work in the same region ; illustrates 



DALL, "William Healey — Continued, 

 unfigured species; describes as new, Polygyra 

 aslimuni Dall, P.pscudodonfa Dall, UtiUinulug 

 iiigromontanus Dull and Strcptoatyla fiebido.'ia 

 Dall; discusses the subdivision of the genus 

 Holospira, and catalogues the known species. 

 Coclocentrum nelsoni Dall, C.iifefferi Dall, and 

 Anisospira streheli Dall are described as new 

 from specimens obtained by E. "VV. Nelson. A 

 list of the known i)ulmonate fauna of the re- 

 gion is given, and also a list of marine mol- 

 lusks collected at or near the western termina- 

 tion of the boundary line. 



List of species of shells collected at 



Bahia, Brazil, by Dr. H. von Ihering. 



Xatttilus, X, No. 11, Marcli, 1897, pp. 121-123. 

 This paper enumerates, from sijecimcnssent 

 to the National Museum, the marine shells col- 

 lected at Uahia, Brazil, showing that many of 

 them are typically Antillean species. 2Iac- 

 trella iheringi Dall, is described as new. 



Report on the coal and lignite of 



Alaska. 



17th Ann. Rep., TJ. S. Geol. Surv., 1896, 

 (March, 1897), pp. 763-908, pis. XLvni- 



LVIII. 



This report summarizes what was previously 

 known in regard to the deposits of coal and 

 lignite in Alaska, also the results of explora- 

 tions by the author and Dr. G. F. Becker in the 

 summer of 1895. TheTertiaryrocks of Alaska 

 are discussed, and a table of the invertebrate 

 fossils known from them, derived from ma- 

 terial in the U. S. National Museum, is given. 

 These are followed by appendices by F. H. 

 Knowlton on the Paleobotany, Charles Schu- 

 chert on the Paleozoic fossils, and Alpheus 

 Hyatt on the Mesozoic fossils. A list of all 

 Alaskan species of fossil plants and a table of 

 their known distribution is given by Mr.' 

 Knowlton; Mr. Schuchert catalogues the 

 known Carboniferous and Devonian fossils of 

 Alaska and descril)e.s as new, variety alaslen- 

 sis, of theCarhomfiM-ims Productuslmgispinus; 

 Professor Hyatt pointsout thegenerallyJuras- 

 sic character of the JMesozoic fossils, and the 

 absence so far of well defined Cretaceous beds 

 in Alaska. The material upon which the re- 

 ports are based is in the National Museum. 



Distribution of marine mammals. 



Science (New series), V, No. 126, May 28, 

 1897, p. 84 '. 

 This note calls attention to the presence in 

 Bering Sea, the North Pacific and the Galapa- 

 gos Islands, of certain marine mammals omit- 

 ted in some recent discussions of geographical 

 distribution. 



Synopsis of the Piuuida' of the 



United States. 



Xautilus, XI, No. 3, 1897, pp. 25-26. 

 This paper revises the synonymy and enu- 

 merates the species native to the Atlantic Coast 

 of the United States and adjacent regions. 

 (See also underR. J. LechmereGuppy.) 



