76 Moll 
MOLLUSCA. 
irroratum (Gould), boreale (Dali), marginatum, aud indolens (Couth.), 
and armadillo (Morch). Apatomical description of 0. celtica (Guv.), aud 
external description of 0. carpenteri (Binney) from S. Lucas, California. 
The geographical distribution is in the European seas, the Atlantic and 
New Zealand. Fischer & Crosse, 1. c. pp. G83-698, pi. xxxi. figs. 1-12. 
Oncidella carpenteri (Biup.) commcn in the Gulf of California, de- 
scribed by Stearns, P. Ac. BJiilad. 1878, p. 399, pi. vii. figs. 7 & 8. 
AuRICULIDiE;. 
Carychium mariai,sp. n., Paulucci, Mat4riaux, &c., and JB. mal. Ges. v. 
p. 358, Lombardy. C. mauritianum : see Pupa {Vertigo). 
Lcemodonta (Nuttall) = Plecotrema (Ad.) ; Nevill, llandl. Ind. Mus. 
p. 221. 
Auricula {Alexia) denticulata (Mont.) lives in the uppermost part of 
the littoral region, above Litorina rudis ; it is air-breathing, its tentacles 
are only contractile, not retractile, and the young shell is crowned with 
hairs. P. Fischer, J. de Conch, xxvi. pp. 309-312. 
IMarinulai] Auricula watsoni, sp. n., Wollaston, Test. Atlant. pp. 269 & 
294, Madeira and Great Salvages. 
Marinula filholi, sp. n., Huttop, J. de Conch, xxvi. p. 42, New Zealand 
[very near (Lowe)]. 
Leuconia ohsoleta^ sp. n., Hutton, J. do Conch, xxvi. p. 43, New Zea- 
land. 
Melampus liberianus (A. Ad.) and its young state, obovatus (A. Ad.), 
Dohrn, JB mal. Ges. v. pp. 151 & 152. 
LlMNJiilDiE. 
Observations on their spinning slimy threads i,n water, by which they 
ascend and descend ; Sherrifp-Tye, Q. J. Conch. 1878, No. 17, pp. 
402-404,^14 & 415. 
Notes/'on the development of Limncea and Ancylus by Robin. [See the 
general subject, supra, p. 13.] 
Limncea steenstrupi, sp. n., Clessin, Mal. Bl. xxv. p. 79, pi. iii. fig. 16, 
Iceland. [Appears to be a dwarf form of ovata^ 
Limncea stagnalis, var. n. bottnica, auricularia var. n. andersoni, and 
palustris var. n. maritima, Northern part of the Baltic; Clessin, Mal. Bl. 
xxv. pp. 72-76, pi. figs. 6, 8, & 17. 
Limncea, banded specimens of L. palustris xnd auricularia] Kobelt, 
Nachr. mal. Ges. 1878, p. 11. 
Limncea delanati, sp. n., Folin, J. de Conch, xxvi. p. 329, pi. x. fig. 5, 
Passages, Spain, in a pond near the sea, of very small size. 
Limncea lagotis varr. nn. yarkandensis and subdisjuncta, Nevill, Moll, 
yark. Exp. pp. 8 & 9, Yarkand, and L. andersoniana (Nevill) var. n. from 
North Tangitar and Kashgar, 1. c. p. 9 ; named rimata, id. Handl, Ind. 
Mus. p. 254 [= pervia (Martens)], = L. defilippii (Issel) var. n. siriku- 
lensisy Lake Sirikul, Moll. Yark. Exp. p. 7. 
Limncea, synonymy and distribution of the species from British India, 
