182 
ZOOLOGICAL LITERATURE. 
Cerithium gibberosum, sp. n., Dunker, Verh. zool.-bot. Gesellsch. Wien, 
18.66, p. 911, Nicobar Islands. 
Colina gracilis^ sp. n., Adams, Proc. Zool. Soc. 1866, p. 160, Eastern Seas. 
MelaNiid^e. 
Brotia^ g. n. Operculum multispiral, as in the Cerithiidae, appearance of 
the shell like io. Melania pagodula (Gould), River Thoungyin, Tavoy. 
H. Adams, Proc. Zool. Soc. 1866, p. 150. 
Melania prcemorclica, sp. n.. Try on. Am. Journ. Conch, ii. p. Ill, pi. 10. 
fig. 3, Burmah. — M. minutaf id. ibid. p. 299, pi. 20. fig. 3, Tahiti. — M. ouala- 
nensis, sp. n.. Pease, ibid. p. 299, pi. 20. fig. 4, Oualan Island. — M. peaseij 
sp. n., Tryon, ibid. p. 300, pi. 20. fig. 6, I^lji Islands. — M. tahitensis and 
luteola, sp. n., Dunker, Verb, zool.-bot. Gesellsch. Wien, 1866, pp. 911, 912,. 
Tahiti. — M, tetrica and balonnensis (Conrad, 1850), from Australia, are figured 
in Am. Journ. Conch, ii. pi. 1. figs. 9 and 10. 
Melania variabilis (Bens.). Five well-marked varieties are described by 
Theobald, Journ. As. Soc. 1866, no. 130, pp. 273-279, and. four figured on 
pi. 9. figs. 4-7. They are named var. glabra^ vittata, turritaj pyramidalisj 
and buccifera. 
The continuation of Mr. Thyon’s monograph of the family Streptomatidce 
has been noticed above (p. 172). He has also published a Note on the 
lingual dentition of the Streptomatidce ” (Am. Journ. Conch, ii. pp. 134, 136), 
which is a reproduction of the corresponding part of Prof. Troschel’s “ Gebiss 
der Schnecken.” 
Pleuroeera hicinctiim, sp. n., Tryon, 1. c. p. 4, pi. 2. fig. 2, Alabama. 
Angitrema wheatleyi, sp. ii., Tryon, 1. o. pi. 2. fig. 1, Elk River, Tennessee. 
Lithasia cylindrical sp. n., Coosa River, and L. loheatleyi, sp. n., Cababa River, 
Alabama, Lea, Proceed. Acad. Nat. Sc. Philad. 1866, p. 133. 
Euryccelon leaii, sp. n., Tryon, 1. c. p. 6, pi. 2. fig. 3, Etowah River, Georgia, 
Goniobasis undulata, sp. n., Tryon, 1. c. p. 6, pi. 2. fig. 4, Georgia. — G. 
cingenda, sp. n., Anthony, Am. Journ. Conch, ii. p. 146, pi. 7. fig. 3, North 
Carolina. 
Anculosa pumila (Com*ad) figured in Am. Journ. Conch, ii. pi. 15. fig. 5, 
Alabama. 
Ilemisinus baudonianus^ sp. n., Mabille and Le Mesle, Journ. Conch, xiv. 
p. 133, pi. 7. fig. 1, Cochin China. — H. binneyi, sp. n., Tryon, 1. c. p. 8, pi. 2. 
fig. 8, New Granada.—^, pazi and simplex j sp. n., id. ibid, pp, 300, 301, 
pi. 20. fig. 6 and 7, Quito. 
Littorinid^. 
Melaraphe subgranostty sp. n., Dunker, Verb, zool.-bot. Gesellsch. Wien, 
1866, p. 913, Madras. 
Bisella kiehnannsegiy sp. n., Dunker, 1 . c. p. 913, New Zealand. 
Planaxidae. 
Flanaxis nicobaricus, sp. n., Dunker, Verb, zool.-bot. Gesellsch. Wien, 1866, 
p. 910, Nicobar Islands. Most closely allied to P. nucleus (Brug.) and P. 
ovatus (Krauss). 
RiSSOIDiE. 
Bissoa octona (L. Nilss.). Dentition described by Eberhard under the 
name of Hydrobia octonuy 1. c. p. 10, pi. 3. fig. 64. 
