THE NAUTILUS. 119 



PUBLICATIONS RECEIVED. 



SYNOPSIS OF THE SOLENID^E OF NORTH AMERICA AND THE 

 ANTILLES. By Wm. II. Dull. (Proc. U. S. Nat. Museum, Vol. 

 XXII, pp. 107-112, 1899.) In monographing the fossil species, Dr. 

 Dall has found it necessary to make many changes in nomenclature 

 involving many of the recent species. The following is a list of the 

 recent species as revised by Dr. Dall : 



East American Species. 



Solen viridis Say. Rhode Island to Georgia. 



Solen (Solena) obi i qua Spengler. Cuba, Porto Rico, St. Thomas. 



(S. rudis Sowb. not C. B. Ads. + philippinarum Sowb. not Hanley 

 are synonyms.) 



Ensis directus Conrad. Labrador to Indian Key, Florida, Pliocene 

 to recent. 



("E. americana Beck," of H. & A. Ads., is probably a manuscript 

 name. Solen siliqua Chickering, not Linn, is a synonym. This 

 species was generally confounded with Solen maynus Schumacker, 

 under the name of Solen ensis Linn., by the earlier American authors. 



In this connection Dr. Dall seems to have overlooked as a synonym 

 S. americana Gould. (Invertebrates of Mass., Binney ed., p. 42, 1870), 

 a name used by most American conchologists. Solen directus was 

 described by Conrad (Proc. Acad. Nat. Sci., p. 325, 1843) as a fossil, 

 from what he considered a miocene deposit fifteen miles below New 

 Berne, N. C. This formation is now known as the Croatan beds of 

 the Pliocene. 



Ensis minor Dall. Cape May to Florida and Texas. "This is 

 Solen ensis var. minor of some of the earlier writers, and bears to E. 

 directus the same relation the Ensis ensis Linn., of Europe, does to 

 the North European E. magnus Schum. It differs from the young 

 of E. directus in having the valves wider behind than in front and 

 relatively narrower as a whole. 



Siliqua squama Blainville, Grand Banks of Newfoundland and 

 Gulf of St. Lawrence. 



" This is Machcera nitida Gould, and Gultellus mediiis Sowb. (not 

 Gray)." 



Siliqua costata Say. Gulf of St. Lawrence south to Cape Hatteras, 

 N. C. 



" The following are synonymous names : Solecurtoides nahantensis 

 Desmoulins; S. sayi Gray; S. radiatus Ravenel (not Linnaeus); 



