92 Moll. 
MOLLUSCA. 
Limncca javanica (Hasaelt), Sumatra, radula, Schepman, in Veth’s 
Middel-Sumatra, iv. 3, p. 9, pi. ii. fig. 6. 
Limncea subaquatilis and papyracea, spp. nn.; Tate, Tr. R. Soc. Ade« 
laide, iii. p. 103, pi. iv. figs. 5 & 6, South Australia. 
Ajjlexa aumntiaca (Carp.) and data (Gould), Central America, figured, 
but not yet described, by Fischer & Crosse, Moll, do Moxiquo, 7, pi. xxxii. 
figs, 1 & 2, pi. xxxiii. fig. 1. 
Physa stabilii, sp. n., Lessona, Atti Soc. Rom. (3) vii. Mem. Sci. fis, 
p. 370, pi. iv. fig. 12, Lago d’Azeglio, Piedmont. 
Physa borbonica (Fer., 1827) = seydiellana (Martens), a variety of it, 
nana (Pot. & Mich.), Reunion ; Martens, Moll. Maur. p. 209, the latter 
pi. xix. figs. 11 & \2. 
Physa liratUy sp. n.. Craven, P. Z. S. 1880, p. 617, pi. ivii. fig. 10, Mooi 
River, Transvaal. 
- Physa perluciday sp. n., Gassies, Fauno Conch. N. Caled. iii., New Cale- 
donia. 
Physopsis. List of known species, eximia, Stanley ana yprccdar a, ovoidea^ 
letourneuxiy and Ihotelleri, spp. nn., the two latter from Egypt, Bour- 
guignat, Descr. Div. Esp. 1879. 
Pyrgophysa mariei (Crosse, 1879), fully described by Crosse, J. de 
Conch, xxviii. pp. 140-142, pi. iv. fig. 3, Nossi-be, Madagascar. The 
genus is characterized by the turreted spire, and also P. wahlbergi (Krauss) 
and ludoviciana (Rang.) are referred to it. [The Recorder thinks that it 
passes gradually into Isidora (Ehrenberg)]. 
Isidora forshali (Ehrenb.),from Mauritius, perhaps = cernica (Morelet); 
Martens, Moll. Maur. p. 210, pi. xix. figs. 7 & 8. 
Planorbis : general anatomical account of the genus ; Fischer & Crosse, 
Moll, do Mexique, 7, pp. 53-60. 
Planorbis corneas (L.), found at Schalfhausen, Switzerland ; Sterki, 
Nachr. mal. Ges. 1880, p. 84. 
Planorbis glabratus (Say), the genuine species from the Miami country, 
Florida, not recognized by subsequent authors, described, and P. (Heli- 
somd) durii, sp. n., also from Florida ; Wetherby, J. Cincinn. Soc. ii. 
[1879], pp. 97-99, with woodcuts. 
Planorbis tenuis (Phil.) = wyldii (Tryon), with var, n. boucardi 
(Mexico), lumens (Carp.), Mazatlan and Guatemala, ancylostomus (Crosse 
& Fischer, 1879) = trivolvis, var. ? of Strebel, with varr. strebelianus and 
chiapasensis, Mexico, lentus (Say), New Orleans and ? Mexico, tumidus 
(Pfr.), Mexico, and belizensis (Crosse & Fisch.), Tabasco and Coban ; 
Fischer & Crosse, Moll, de Mexique, 7, pp. 60-68, pi. xxxii. figs. 3-6, 
pi. xxxiii. fig. 3, pi. xxxiv. figs. 1-4. ^ 
Planorbis marginatus harbours the Cercaria of the smaller fluke (Dis- 
toma lanceolatum), Limncea truncatula probably that of the larger species 
(D. hepaticum) ; Cobbold, Zool. Anz. iii. p. 257. Rolleston thinks that 
Arion ater is the slug which harbours the younger stages of the fluke ; 
tom. cit. p. 258. 
Planorbis vorticulas (Trosch.), with var. charteus (Held) = bavaricus 
(Westerl.) = acies (Miihlf., Rossm.), and var. n. helvetica, probably from 
Switzerland ; the species extends from Holland to Central Russia, and 
