1902,] natural sciences of philadelphia. 713 



Notes. 



Cardita nodulosa Lamarck is a Japanese species, but on Valen- 

 ciennes' plates of the Voyage of the Venus, 1846, according to 

 Carpenter, a West American species, probably C. affinis Sowerby, 

 1832, is so named by Valenciennes. In this citation and Carpen- 

 ter's reprint by the Smithsonian InsLitulion the name is misprinted 

 modulosa, both in text and index. In Carpenter's Report to the 

 British Association, 1864, p. 287, a " Cardita incrassatus Tieiiier " 

 is cited from the Proceedings of the Zoological Society for 1852, p. 

 157. No such species occurs in the locality mentioned, or any- 

 where in the P. Z. S., or elsewhere that I have been able to 

 discover. It is, perhaps, a case of misplacement of an index slip 

 in the original MS. C. incrassata Conrad is said to be a variety 

 of C. antiquata, and is not West American. 



Descriptions of New Species. 

 Venericardia (Cyclocardia) armilla u- sp. 



Shell small, rounded, moderately inflated, nearly equilateral, 

 white with a pale brownish periostracum ; sculpture of from 17 to 

 21 well-marked, rounded ribs with subequal interspaces; these ribs 

 are beaded with rounded or ovate nodules and continue to the ven- 

 tral margin of the valves, the interspaces are conspicuously cross- 

 striated; beaks full, elevated, proeogyrate, with a small, slightly 

 impressed smooth cordate lunule and very narrow escutcheon ; inner 

 margins strongly crenate. Height 9, length 8, diameter 6 mm, 



U. S. Fish Commission stations 2,399, 2,400 and 2,407, in the 

 northern part of the Gulf of Mexico between the Mississippi delta 

 and Cedar Keys, in 24 to 196 fathoms, bottom temperature 51° to 

 66° F. U. S. Nat. Mus., No. 93,370. 

 Venericardia (Cyclocardia) moniliata n. sp. 



Shell small, rounded, moderately inflated, nearly equilateral, 

 white, with 20 to 24 radial narrow ribs with wider, cross -striated 

 interspaces; the ribs are sculptured with fine, small, sharp, close-set 

 tubercles, the beaks small, nearly erect, the lunule lanceolate and 

 smooth, the escutcheon similar but longer; internal margins 

 minutely crenate; there is a distinct lateral and socket in each 

 valve, the anterior lateral being in the left valve. Height and 

 length 6.5, diameter 4 mm. 



