252 
ZOOLOGICAL L1TEHATU1U2. 
Simnia (Risso), a ^enus adopted by H. & A. Adams, characterized by a 
simple acute outer lip, and comprising in the work of these authors the three 
species aperta, patuJaj and implicata (Sow.), is to be cancelled, the two first 
being young shells, and the third having a ^^ery conspicuously thickened lip. 
Tryon, Am. Journ. Conch, i. pp. 94 & 95. Tryon thinks that patula 
(Pennant) is the young of Ovida adriaiica (Sow.), and that this latter name 
therefore ought to be placed in its synonymy. We are of opinion that the 
well-known name of O. adriatica, under which it was described for the first 
time in its mature state, and Avhich has been adopted hitherto by all subse- 
quent writers, ought to be retained. Moreover there is nothing in the adult 
which could be called patulous. 
PEDICULAIlIIDiE. 
Fedicularia californicay sp. n., Newcomb, Proc. Calif. Acad. Nat. Sc. iii. 
1864, p. 121, California j P. pacijicay sp. n., Pease, Proc. Zool. Soc. p. 610, 
Central Pacific. 
Cerithiidas. 
Cerithium monacJmSy Crosse and Fischer, figured in Journ. Conch, xiii. pi. 
3. figs. 17 & 18, South Australia. 
New species : — 
Bittium esuricns and fastujudiimy Carpenter, xVnn. & Mag. Nat. Hist. xv. 
p. 181, Sta. Barbara, California. — The same, B. csurmis, and two other 
species, B. attcmiatum and (juadrljilatumy Carpenter, Journ. Concli. xiii. pp. 
142 & 143, California. 
\_BiUkmi\. Cerithium jadertinum, siihcylindrictimy acicultty and minimumy 
Brusina, Verhandl. zool.-bot. Gesellsch. Wien, 1865, p. 16, Dalmatia. 
Triphoris anyasi and T. 4 )feifferiy Crosse, Journ. Conch, xiii. pp. 46 & 47, 
pi. 1. figs. 11, 12, 13, 14, South Australia. — Cerithium {Triphoris) connatumy 
Montrouzier, founded on a young specimen, is redescribed and figured, ibid, 
p. 163, pi. 6. fig. 5, New Caledonia. 
Melanida:. 
a. Melanidce of the Old W orld. 
Blanford, H. F. Oil the relations of TanaliayPhilopotamiSy and 
PaludomuSy with a review of the Cingalese species of the 
latter genera. Trans. Linn. Soc. xxiv. p. 165, with a plate. 
The author inclines more to uniting than to splitting genera 
and species, and proposes to refer the genera mentioned as sub- 
genera to Melania ; he reduces the Ceylonese species of Philopo- 
tamis to five, and the numerous Paludomi to two species only, 
P. tanjoriensis (Gmel.) and P. chilinoides (Beeve). The opercles 
of many species and some series of variations in the shell are 
figured. It is certainly an advance in science if any group of ani- 
mals is treated in a similar manner and the affinities between 
the various forms are pointed out ; whether these forms be called 
species or varieties is of minor importance. 
