GASTROPODA (pECTINIBRANCHIA) . 
MolL 31 
Amnicola parvula (Hutton), Hanley & Theobald, Conch. Ind. pt.viii. 
pl. cli. figs. 8 & 9. 
Tricula inontana (Bens.) figured ; iid, tom. cit. pi. civ. 
Limnorea, g. n. Shell and operculum as in Ilydrohia, all seven plates 
of the radula denticulated at the edges ; no basal denticle in the median 
plate. 
Subg. n. Leucosia. Shell smooth : L. angarenais (Gerstfeldt, as 
Hydrohia), and van*, im. elata and pulla, L. stiedoR, godlewshii, and var. 
pulchella^ Jiori^ and oviformis, spp. nn. 
Subg. n. Ligea. Shell sculptured : L. carinata, carinato-costata^ 
turriformis, costata, wrzesniowsicii, contahulala^ duthiersi, and ciliata^ 
spp. nn., all from Lake Baikal, some of them in depths of 300-350 metres. 
Dybowski, Mem. Ac. Petersb. (7) xxii. No. 8, pp. 33-51, pis. iii., iv., & vi. 
As all three names are pre-occupied in Crustacea. E. v. Martens pro- 
poses Baicalia for the genus, Liohaicalia and Trachyhaicalia for the 
subgenera; JB. mal. Ges. iii. p. 182. 
Lithoglyphus caspius (Krynicki) figured by Grimm, Kaspinskoe more 
i ego fauna, i. p. 157, pi. vi. fig. 10. 
Jullienia, new subgenus of Lithoglyphus^ characterized by the ex- 
panded peristome. Type : Melania flava (Desh.) from Cambodia. 
Crosse & Fischer, J. de Conch, xxiv. p. 323. 
Lacunopsis, g. n. “ Testa depressa, solida, Neritiformis, epidermide 
vestita ; spira brevissima, cohoidea vel convexa et obtusissima ; ultimo 
anfractu maximo, convexo, basi piano, angulo submarginali circum- 
dato ; apertura minima, semilunari ; margine dextro crassiusculo, paulo 
expanso, in angulum posteriorem, prselongatum, obliqnum desinente ; 
columella lata, plana vel concaviuscula, soptiformi, acuta.” L. jullieni, 
monodonta, and [-a], spp. nn., Deshayes & Jullien, N. Arch. 
Mus. X. (1874), pp. 147-151, pi. vii. figs. 10-22, Cambodia, freshwater. 
It is considered as a subgenus of Lithoglyphus by Crosse & Fischer, J. de 
Conch, xxiv. p. 323. 
Benedictia, g. n. Shell like that of Paludina. aperture rather large ; 
operculum spiral ; radula with a broad triangular median plate and simple 
lateral hooks ; several basal toothlets on the median plate of the two 
species ; male organ not within the right feeler. B. haicalensis (Gerst- 
feldt) and limnmoides (Schrenck, both as Paludina), and B. fragilis, 
sp. n.. Lake Baikal ; Dybowski, 1. c. pp. 4-24, pis. i. figs. 1-17, v. figs. 1-16, 
vii. figs. 17-19, viii. figs. 1-8. 
PAHJDlNIDiE. 
Paludina turhinata [nec Morelet, jullieni., frauenfeldi., lamarcki^ 
sphoericula^ moreleti, vignesi, chalanguensis, ohscurata^ and speciosa, 
spp. nn., Deshayes & Jullien, N. Arch. Mus. x. (1874) pp. 131-142, pis. vi. 
figs. 13-18, vii. figs. 23-29, and viii. figs. 1-7, Cambodia. 
Vivipara coske (Heldreich) distinguished from vivipara [listerij. 
Forbes]; Mousson, J. de Conch, xxiv. p. 47, pi. iv. fig. 1, Asia Minor 
and Armenia. 
Mehongia., subg. n. of Paludina^ for P. jullieni (Desh.), characterized 
by the narrow aperture ; Crosse & Fischer, J. de Conch, xxiv. p. 316. 
