MUSEUM OF COMPARATIVE ZOOLOGY. Dar 
This seems to be an excellent species. The width of the area varies more, 
however, than one would suppose from Jeffreys’ description. It is sometimes 
wider than in L. aurita, but the hinge-line is longer and the corners more 
nearly rectangular than in that species. 
Limopsis antillensis Datu. 
Limopsis antillensis Dall, Bull. M. C. Z., TX. p. 119. 
Plate VIII. Figs. 7, 7 a 
Habitat. Sigsbee, off Havana, 80 fms. 
No more specimens of this species have been found in the collection. I sus- 
pect it to attain a considerably larger size when adult. 
« Limopsis cristata Jerrrers. 
Limopsis cristata Jeffreys, Dall, Bull. M. C. Z., IX. p. 119. 
Limopsis minuta var.? 
Habitat. Yucatan Strait, 640 fms. 
On further study I am somewhat in doubt whether these three poor valves 
do not belong to a young stage of L. minuta. The specimens in the Jeffreys 
collection are all so small, or in such poor condition, that I cannot regard them 
as affording sufficient evidence of a species different from minuta, though per- 
haps those in the British Museum may be better preserved. 
Limopsis aurita Brocchi. 
Limopsis aurita Brocchi, Dall, Bull. M. C. Z., IX. p. 118, 1881. 
Habitat. Gulf of Mexico, west of Florida, 30 fms.; Station 36, 84 fms.; 
Station 20, 220 fms.; Gulf Stream, 447 fms.; Stations 253 and 264, in 92 and 
416 fms., near Grenada ; Station 269, near St. Vincent, in 124 fms.; Station 
176, off Dominica, in 391 fms.; and Station 163, off Guadelupe, in 769-878 
fms. The bottom temperatures varied from 39° to 70° F., the average being 
about 55° F. 
Var. paucidentata, Shell thinner, smoother, with narrower margin, smaller 
and fewer (4 +- 4) teeth, ends of valves less expanded, less oblique; radiating 
sculpture reduced to rows of small scars ; concentric sculpture obsolete. Alt. 
9.0 ; max. lat. 9.0 mm. 
Two valves at Station 117, in 874 fms., gray ooze, near Jamaica; bottom 
temperature 40°.0 F, 
