692 REPORT OF NATIONAL MUSEUM, 1890. 



William Healey Dall — Continued. 



iconography, it seems proper to call attention to the fact that the arrangement adopted 



includes very extensive revision of the classification until lately in common use, and an 



attempt has hoen made in the gastropods, as well as iu the bivalves, to incorporate such 



changes as the progress of recent years has shown to be necessary or advisable, the result 



being something decidedly different from the obsolete classification to be found in most 



' catalogues or manuals accessible to students. 



William Healey Dall. Note on two Helices new to the fauna of the United States. 



The Nautilus, III, No. 3, July, 1889, pp. 25, 26. 



Determines the presence and distribution in Florida of Helix (Microconus) caeca Guppy and H. 

 (M) granum Strebel. 



William Healey Dall. On the genus Corolla (Dall.). 

 The Nautilus, ill, No. 3, July, 1889, pp. 30, 31. 



Shows that Cymbuliopsis Pelseneer is synonymous with Corolla Dall, and that the latter name 

 should be adopted 

 William Healey Dall. Note on Crcpidida glauca Say. 

 The Nautilus, in, No. 9, January, 1890, pp. 98, 99. 



Shows that the shells commonly referred to O. glauca Say are either the depressed normal 

 form of C. convexa Say, or young specimens of G. fornicata Lam, and that the name 

 glauca had better be ignored in the future. 

 William Healey Dall. On a new species of Tylodina. 

 The Nautilus, III, No. li, March, 1890, pp. 121, 122. 



Shows that the mollusk obtained by the U. S. Fish Commission on the northern border of the 

 Gulf of Mexico, off Florida, and a shell doubtfully referred to Tylodina or Umbraculum in 

 the report on the gastropoda of the Blake expedition, are identical and form a species of 

 Tylodina new to science, for which the name T. americana is proposed. 

 William Healey Dall. The Behring Sea controversy. 

 New York Evening Post, July 10, 1889. 



A letter calling attention to certain historical facts bearing on the question. 

 William Healey Dall. Deep-sea mollusks and the conditions under which they 

 exist. 



Proc. Biol. Soc. of Washington, v, 1890, pp. 1-22. 



An address delivered at the ninth anniversary meeting of the Biological Society of Washing- 

 ton, November 16, 1889. 



William Healey Dall. On the hinge of Pelecypods and its development, with an 

 attempt toward a hetter subdivision of the group. 

 Amer. Jour. Sci. , xxxviu, December, 1889, pp. 445-402. 



A paper discussing the dynamic genesis of hinge characters and proposing a new classifica- 

 tion of the bivalve mollusks. 

 William Healey Dall. Bering. 



The Nation, xlix, No. 1275, December 5, 1889, p. 454. 

 A review of Lauridsen's Life of Bering, translated by J. E. Olson. 

 William Healey Dall. Scientific results of explorations by the U. S. Fish Com- 

 mission steamer Albatross, No. vn. Preliminary report on the collection of niol- 

 lusca and brachiopoda obtained iu 1887-1888. 



Proc. U. S. Nat. Mus., xii, No. 773, March 7, 1890, pp. 219-362, pi. v-xiv. 



This report comprises a discussion of the conditions of life in the deep sea, with special refer- 

 ence to their bearing on molluscan life; a discussion of the mechanics concerned in the 

 hinge of bivalve mollusks and its development, with an attempt toward a better classifi- 

 cation of the group, and lastly a report on the forms collected. 

 William Healey Dall. On dynamic influences in evolution. 



Proc. Biol. Soc. of Washington, vi, pp. 1-10, issued separately May 8, 1890. 

 A statement of the author's position in regard to the views, sometimes termed Neo-Lamarck- 

 ian, for which the term "dynamic evolution " is here proposed. 

 William Healey Dall. A critical review of Bering's first expedition, 1725-1730, 

 together with a translation of his original report upon it, with a map. 

 Nat. Geog.Mag., II, No. 2, June, 1890, pp. 1-57. 



A review of the expedition, its causes, the circumstances under which it was made, the lit- 

 erature to which it gave rise, and an estimate of its geographical results, together with 

 Bering's original report now first translated from the Russian language, and a facsimile 

 of his first published chart. 



