W. Stimpson on the so-called Melanians of N. America. 47 
the name Anandria. Their lingual dentition is of the same type 
(8, 1, 3), though differing considerably in details. And it is 
not improbable that the Turritellide and some of the Cerithia 
must be referred to the same tribe, although I confess that the 
suggestion is based upon the examination of a limited number 
of individuals preserved in spirits. My opinion with regard to 
the Turritellide is strengthened by the remark of Forbes and 
anley in their description of this family," that “the sexes are 
probably united ;” an idea perhaps founded upon the absence of 
a copulatory organ in the male. And in Kiener’s figure of the 
Soft parts of Turritella duplicata Lam.," there is represented 
sinus in the side of the body and foot somewhat like that of the 
female Melanian 
Sweeping. 
The first published description which I have been able to find 
tentacles, upon an enlargement of the outside basal portion 
which the eyes are situated, but never beyond the middle of the 
tentacle; the mouth is, provided with a double row of file-like 
? ‘ . 
- Mauzzie, slightly thickened, and of medium size; edge of the 
mantle continuous and simple. The exposed parts are colored 
with blackish upon a yellowish ground, which run transversely 
: * Thave every reason to believe that the Old-World Melanians are also charac- 
ized by the absence of copulatory organs, but will not include them in the same 
roup with the American species, until the fact is established by the study of the 
animals, or at least of well-preserv holic specimens, 
_ & British Mollusea, vol. iii, p. 171. a eee 
™ Kiener’s “ Teonographie Coquilles vivantes ; Turritelle, pl. 1 
* American Journal of Arts and Sciences, xli, (1841), 22. 
