MUSEUM OF COMPARATIVE ZOOLOGY. 263 
is certainly nearer Astarte than it is to Meretriz, deduction being made of 
heterogeneous species. I have therefore, awaiting further information, followed 
the acute and accurate Woodward in referring Circe and its subdivisions to the 
Astartide, where they seem to me more at home than in the position assigned 
them by the learned French malacologist. 
Gouldia cerina C. B. Apams. 
Gouldia cerina C. B. Adams, Dall, Bull. M. C. Z., IX. p. 180, 1881. 
Plate VII. Figs. 4a,4b. 
Habitat. Charlotte Harbor, Florida, 13 fms.; Barbados, 100 fms.; Station 5, 
229 fms. U.S. Fish Commission at various depths northward to Hatteras, 
abundantly. 
Gouldia (Circe) bermudensis E. A. Smith is more globose, the hinge is differ- 
ent, and the lunule shorter, but the sculpture is essentially the same in both, at 
least so far as reticulation is concerned. C. cerina is variable, and some speci- 
mens are faintly and others very strongly reticulated. C. bermudensis is very 
much like C. metastriata Conrad, a tertiary fossil. 
Famity UNGULINID. 
Gents DIPLODONTA Brony. 
Diplodonta venezuelensis Dunxer. 
Diplodonta venezuelensis Dunker, Dall, Bull. M. C. Z., IX. p. 136, 1881. 
Habitat. Yucatan Strait, 640 fms., one valve and fragments ; Sigsbee, off 
Havana, 80 fms. ; West Florida, 19 fms.; all disunited valves. 
Diplodonta turgida Verritzt & Samira. 
D. turgida Verrill & Smith, Trans. Conn. Acad., V. p. 569, pl. lviii. fig. 42 (1881). 
Habitat. Station 247, in 170 fms., off Grenada, one fresh valve. 
This differs from the preceding species by its much greater inflation ; the 
hinge teeth are also much more delicate, longer, and of a somewhat different 
shape. ‘ 
