MOLLUSCA. 
279 
figs. 6 & 7, from Vera Cruz. — S. sillhnani and S. stretcliiana from Nevada, S. 
verrillii from tlie Gulf of St. Lawrence, J3land, Ann. Lyc. Nat. Hist. New 
York, viii. pp. 167-170, with woodcuts. 
Succinea haydeni (Binney) and S. Iiawhinsi (Baird) figured by Bland, 1. c. 
Succinea haleana, grosvenori, moresiana, wilsomij forsheyi, and pellncida are 
described as new species by Lea, Proc. Ac. Nat. Sc. Philad. 1864, pp. 109 & 
110, from the United States. The same author defends the specific validity 
of severnl forms which appeared to Binney to be of a doubtful character. 
Suborder Limnophila. 
Auriculacea. 
\_Scardhus~\ Pythia pantherina (A. Adams), var. uveana, Mousson, Journ. 
Conch, xiii. p. 177, Samoa Islands. 
Cassidtda rnultipUcataj Martens, Monatsb. Ak. Wiss. Berlin, 1864, p. 54 
= nucleus, auct., non Martyn, Banka ; C. jdaveola, sp. n.. Martens, 1. c.> 
Ceram. 
Melampus siamensis, nucholus, sulctdostis, and edentidus, sp. n., Martens, 
1. c. pp. 64 & 65, the first from Siam, the two following from Amboina, and 
the last from Flores. — 3£. albus, sp. n., Gassies, Journ. Conch, xiii. p. 211, 
New Caledonia. 
LiMNiEACEA. 
Limneeus. Tryon, Am. Journ. Conch, i. pp. 247-252, divides the North 
American species, fifty in number, thus : — 
1. Limnt^a : X. stagnalis (L.) and L. lepida (Gould). 
2. Neristoma: L. ampla (Alighels), columella, and macrosioma (Say). 
[The type is, without doubt, L. auricidarius, L.] 
3. Bulimncea : L. megasoma (Say). [This division might be properly 
united with the following.] 
4. Limnophysa : type L.palustris (Miill.), contains the greater part of the 
species, with several from the arctic regions. 
5. Leptolimncea : X. aitenuata (Say) and Idrtlandiana (Lea). [Peculiar to 
North America, but scarcely distinct from the preceding division.] 
6. Acella : X. gracilis (Jay) and X. lanceata (Gould). [Peculiar to North 
America.] 
Limnmis ovatus (Drap.), var. stubeli and X. auricularius, var. riheirensis, 
Beibisch, Malak. Blatt. xii. pp. 131 & 132, from S. Antao, Cape Verde Islands. 
\^LihmeBUS~\ Lymncea smithsoniana, traskii, jamesii, lecontii, and arctica, 
sp. n.. Lea, Proc. Ac. Nat. Sc. Philad. 1864, p. 113, the first four from the 
United States, the last from Moose Iliver, British America. 
Limncea rowelUi, gabbii, and binneyi, sp. n., Tryon, Am. Journ. Conch, i. 
pp. 228 & 229, pi. 2 k figs. 1, 2 & 3, California and Oregon ; X. zebra, sp. n., 
Tryon, 1. c. fig. 4, Minnesota and Michigan j X. hrownii, sp. n., Tryon^ 1. c. 
fig. 16, Ohio. 
Limncea dejilippii, sp. n., Issel, Mem. Accad. Torin. xxiii. p. 46, pi. 3. 
figs. 62 & 63, Lake Goktscha in Armenia. [Almost too closely allied to X. 
stagnalis, L.] 
