56 Moll. 
MOLLUSCA. 
species; C. solida (Phil.) = nicaragtia (Prime), C. rugulosa (Mouss., 
MS.), sp. n., p. 106, pi. XV. figs. 1 & 2, Gape York, N. Australia. 
Cyrena (Corbicula) fluminalis var. n. oxiana^ 37 mm. high, dry bed of 
the Amu Daria ; Martens, JB. mal. Ges. iii. pp. 337. 
Corbicula : 3 species figured by Hanley & Theobald, Conch. Ind. pt. viii. 
pi. civ. 
Sphcerium : 47 species figured by Sowerby, 1. c. pts. 330 & 331. S. 
lenticular fig. 6, and rugosurn (Whitmore), fig. 16, locality unknown, 
' madagascariense (Tristan, MS), fig. 22, Madagascar, eburneum (An- 
thony, MS.), fig. 25, United States, borneemey fig. 42, Borneo, elongatuniy 
fig. 43, locality unknown, mormonicimiy fig. 44, Great Salt Lake, capense 
(nee Krauss), fig. 45, South Africa, and translucidumy fig. 46, Australia, 
are apparently new. 
S. Clessin commences a monograph of this genus also in Kiister’s new 
edition of Conchy lien- Cabinet by Chemnitz, pts. 257 & 258 (vol. ix.) ; 
besides some well-known species of Europe and North America he 
describes and figures the following: — S. oblonguniy sp. n., = Cyclas 
rivalis, Dupuy & Brand, = S. corneum var., Bourguignat, France, p. 83, 
pi. ix. figs. 25-27 ; westerlundi (Clessin) = corneum var. nucleus (Wester- 
lund). Northern Sweden, p. 84, pi. x. figs. 6-8 ; firnium (Clessin), Den- 
mark and Northern Germany, p. 84, pi. x. figs. 9-11 ; 7namillanum 
(Wostorluiid), Sweden, p. 85, pi. x, figs. 12-14; dupplicalam [sic] 
(Clessin), lakes of Southern Bavaria, p. 86, pi. xi. figs. 4-6; drapar- 
naldi (Clessin) = Cyclas lacustris (Drap.) = ovalis and consobrina 
(Ferussac), throughout Europe, p. 87, pi. xi. figs. 7-9 ; galitzinianum 
(Clessin), Oka River, Russia, p. 88, pi. xi. figs. 15-17 ; sandbergeriy^Tg, n., 
Wurzburg, Germany, p. 89, pi. xii. figs. 13-15 ; obensCy sp. n., mouth of 
the Ob River, p. 90, pi. xi. figs. 12-14; capense (Krauss, as Cyclas), 
S. Africa, p. 93, pi. x. figs. 3-5 ; pisidioides (Gray), England, p. 94, 
pi. X. figs. 3-5 ; fragile, sp. n., Bremen, p. 95, pi. xi. figs. 18-20 ; dichiniy 
sp. n., Frankfort, p. 96, pi. xii. figs. 18-20 ; nitidurny sp. n., Siberia, 
p. 98, pi. xii. figs. 9-11. 
Sphcerium levinoclis\_-de^ and nitidurny spp. nn., Westerlund & Clessin, 
Nachr. mal. Ges. 1876, p. 102, Yenisei River, 68*^ & 69^ N. lat. 
Cyclas inclica (DQ^h.)y figured by Hanley & Theobald, Conch. Ind. 
pt. viii. pi. civ. fig. 9. 
Cyclas incurvciy sp. n., Lechmere Guppy, P. Sc. Ass. Trinid. 1872, 
Trinidad. 
Calyculina lacustris var. n. septentrionaliSy Clessin, 1. c. p. 103, Yenisei 
River, OO^^-OO^ N. lat. 
Pisidium. S. Clessin has completed his monograph in Kiister’s new 
edition of Chemnitz, pts. 262-257 (vol. ix.) ; besides some American 
species already known from the works of Prime and Haldeman, the 
following are described and figured : — Pisidium mirabile (Whittemore, 
MS.) and mighelsianumy spp. nn., both Massachusetts, pp. 49 & 57, pi. vi. 
figs. 1-3 & 19-21 ; herminii (Welwitsch, MS.), sp. n., p. 61, pi. vii. 
figs. 12-14, Sierra d’ Estrella, Spain ; dorbignii, new name for Cyclas 
p:\dchella (d’Orb.), Maldonado, p. 62, pi. vii. figs. 3 & 4 ; argentinumy 
Orb. {Cyclas), Monte Video, p. 63, pi. x. figs. 1 & 2 ; novo zealandicum 
