OF SOUTHERN INDIA. 449 
some differences in the form of the jaws and in the teeth of the radula between 
these so called families, but we doubt very much whether the distinctions are 
actually so very important as to necessitate another division of the Crrrap.z, than 
that we have adopted, namely, into three sub-families, oruzivm, crrrmivm, and 
PEDIcULARUNE. The dentition of Pedicularia is said to be thoroughly distinct 
from that of any known family, but on comparing it with that of Trivia and Erato 
one almost fails to detect such an essential difference as pointed out in the description. 
The teeth of the orvzivm (or AupurprRasrp2z) appear far more distinct than those 
of any of the other families. We really cannot as yet see the benefit derivable 
from the distinction of such a number of families, inasmuch as closely allied shells 
and animals are removed far from each other, but it is just as possible that farther 
investigations and anatomical researches may prove their propriety. 
In his Cyrrzacea Troschel distinguishes three genera: 
1. Cyprea, Linn. Shell with labial groove enlarged into a spoon-shaped 
excavation. ' 
2. Aricia, Gray, labial groove not enlarged; occasionally indistinct. 
3. Pustularia, Swains.; shell tuberculated. 
Farther, the same author distinguished a number of sub-genera, the genus 
Cyprea being divided into Talparia, Tigris, Lycina and Mauritia ; that of Aricia into 
Erronea, Erosaria and Monetaria. We again would hesitate to give these sub- 
generic distinctions preference to those stated in Gray’s and H. and A. Adams’ 
works. Some of them may prove of great convenience, but how, for instance, 
Cyp. (Aricia) Mauritiana and Cyp. (Aricia) caput-serpentis ought to be separated 
into two distinct genera, the first belonging to the sub-genus Mawritia of Cyprea 
and the other to Hrosaria of Aricia, I am unable to detect. 
The Yerrrracea of Troschel include the genera Zrivia (of which TZ. europea 
is the type) and Erato. No important alterations are made as to the genera of 
the other families. 
b. Sub-family,—OVULINZ, p. 45. 
Gould proposes for a minute shell from the China seas the name Crithe, having 
both ends produced and numerous cross folds on the inner lip (Proc. Boston Soc., 
1860, VII, p. 384). 
On page 46 I have noticed in reviewing the cretaceous species described under 
the name Ovula that there is only one species known, which appeared to be a true 
Ovula, referring to the Ovula antiquata of D’Orbigny from our South Indian 
cretaceous deposits. Having since examined the original specimen of Forbes Cyprea 
Cunliffei, I found that D’Orbigny’s identification, as stated in the Prodrome, is 
correct, and that the species must be referred to the next sub-family; conse- 
quently there is at present no species of orvvziyvz known with sufficient certainty 
from cretaceous deposits, 
