112 



THE NAUTILUS. 



Crepidula aculeata Gmel. R. G. S., Maldonado (Rush.) 



Crepidula fornicata Lin. R. G. S. 



Sigaretus macuUitus Say, S. C. 



Acmsea onychina Gld., S. P. Maldonado. 



Astralium olfersi Troschel, S. P. 



Astralium latispina Phil., S. P. 



Omphalius viridulus Gmel. var. brasiliensis Mke. S. P. 



Omphalius patagonicns Orb., Maldonado. 



Lucapinella adspersa Phil. S. P. 



Fissuridea barbadensis var. rosea Gmel. S. P. 



Fissuridea patagouica Orb., Maldonado. 



DESCKIPTION OF A NEW FORM OF CYPR^EA. 



BY JOHN FORD. 



Cyprsea cruenta Gmel. var. Greegori n. var. 



Sliell depressed, orbicular-oval in form, heavily calloused on the 

 sides and ends. Callus on the sides light salmon in color, with irre- 

 gular purple-brown spots, having a blotchy appearance. Dorsal 

 surface similar to that of erttente, but lacking the whitish spots typ- 

 ically present in that species. Base spotless, salmon colored, darkest 

 in the interstices. Teeth on outer lip very strong, long and whitish ; 

 on inner lip finer, with the exception of the anterior fold, and the 

 adjacent tooth, both of which are ver'y prominent. Space between 

 the anterior fold and the following tooth wide and bright red ; 

 posterior teeth of inner lip prolonged outward upon the base. 



Dimensions of an average specimen: length li, breadth t inch. 



At a glance this shell appears somewhat related to C. eaurica 

 Linn., but a careful examination will show that it is entirely distinct 

 from that species, the columella of eaurica being more concave, and 

 the anterior fold bifid in character; the following tooth of eaurica 

 also is less prominent, and the form and color of the species 

 altogether different. 



This variety differs from C. cruenta in being smaller, more 

 rounded in form, entirely lacking spots on the base, and in the 

 peculiar variations of the teeth as described above. 



While most students would probably consider var. Greegori a 

 distinct species, I am inclined to believe it too closely related to C 



