BIBLIOGRAPHY. 571 



Charles B. Cory. A List of the Birds collected in the Island 01 Grand Cayman, 

 West Indies, by W. D. Richardson, during the Summer of 1886. 

 The Auk, m, 1886, pp. 501, 502. 



Enumerates 40 species. The National Museum acquired a number of them in exchange with 

 Mr. Cory. 



William Healet Dall. Report on the Mollusca. 



Part 1. Brachiopoda and Pelecypoda. Bulletin of the Museum of Comparative Zoology, xn, 

 No. 6. 



(Reports on the resnlts of dredging under the supervision of Alexander Agassiz in the Gulf 

 of Mexico (1877-'78) and in the Caribbean Sea (1879-80) by the U. S.. Coast Survey steamer 

 Blake, Lieut. Commander C. D. Sigsbee, TJ. S. Navy, and Commander J. It. Bartlett, TJ. S. Navy, 

 commanding. No. xxix. 8vo, pp. 171-318, Plates I-IX, Cambridge, the Museum. September, 

 1886.) 



This paper comprises the first part of the report on the deep-sea Mollusca collected on the 

 Blake expeditions, and consists, first, of a general discussion of the conditions of molluscan life 

 at various depths, the effect of these conditions upon variation and specific equilibrium, a clas- 

 sification of the regions of the sea bottom, and a review of the fauna of the depths as now 

 known; second, of a description of the brachiopods and pelecypods of the Blake collection and 

 illustrative species amounting to thirteen species and varieties of brachiopods and two hun- 

 dred and fourteen of pelecypods (beside thirty mentioned or described as illustrative), com- 

 prising three new families, twelve new subgenera or sections, and eighty-one new species, be- 

 side those previously known. 



In addition to description of the shells, etc., anatomical details of high importance and pre- 

 viously unknown are given for many species of the Pectenidce ; for Dimya, previously known 

 only as a fossil for species of Modiola and Area, for the new family Poromyidce, and for the 

 Verticordiidce, Cuspidariidce, and species of Anatinidce. 



The important fact of the absence of gills in the genus Ouspidaria (formerly known as 

 Necera) is established, with many details and a re-arrangement of the genera and sections of 

 the group as well as of the Poromyidce and Verticordiidce. 



A new and recent species of the genus Isocardia, section Meiocardia, hitherto represented 

 by a single species in oriental seas, is shown to inhabit the Antilles, and the nomenclature of 

 many American mollusks is revised and corrected. 



William Healey Dall. Report on the Mollusks collected by L. M. Turner, at 

 Ungava Bay, North Labrador, and from the adjacent Arctic seas. 

 Proc. TT. S. Nat. Mus., IX, Oct. 11, 1886, pp. 202-208, pi. iii, figs. 1-3. 



This report enumerates four pulmonates, two pteropods, nine marine gastropods, eight pele- 

 cypods, and one brachiopod, with notes. Of these, one genus, Aquilonaria, with its type A. 

 turneri, is described as new. 



William Healey Dall. Contribution to the Natural History of the Commander 

 Islands. No. 6. Report on Bering Island Mollusca, collected by Mr. Nicholas 

 Grebnitzki. 



Proc. V. S. Nat. Mus., IX, Oct. 11, 1886, pp. 209-219. 



In this paper seventy-five species are enumerated, with notes and a summary and revision 

 of the existing knowledge as to the Mollusk fauna of the Commander Islands. The name Os- 

 teochiton is proposed for the group typified by Placiphora sinuata Carpenter ; Haloconcha for 

 Lacunella Dall. (pre-occupied by Deshayes), and a new variety, atkana, of Litorina sitkana 

 Phil., is described. 



William Healey Dall. Supplementary notes on some species of Mollusks of the 

 Bering Sea and vicinity. 



Proc. TJ. S. Nat. Mus., IX, Oct. 19, 1886, pp. 297-309, pis. iii and iv. 



In this paper besides numerous notes and corrections in regard to previously known species, 

 the following are described and figured : 



Bela sculpturata, B. krausei, B. solida, Cerithiopsis truncatum, Velutina conica, Cingula ro- 

 busta var. martyni and var. scipio, Onoba cerinella, O. aleutica, A.lvania castanea var. alaskana, 

 A. castanella, A. aurivillii, and Macoma var. middendorffvi. 



The following are figured for the first time : Mangilia aleutica, Bela Icevigata, B. harpa, and 

 Trophon muriciformis. Mangilia funebrale Dall is shown to be a synonym of M. levidensis 

 Cpr., and Trophon Stuarti Smith of T. orpheus Could. 



William Healey Dall. Alleged early Chinese voyages to America. 



Science, VIII, No. 196, Nov. 5, 1886, pp. 402, 403. 



Calls attention to the uncertain character of the evidence generally adduced in favor of 

 these voyages, and corrects several wide-spread erroneous statements bearing on this topic. 



