LAMELLIBRANCHIA. 
Moll 81 
arata (Blanf.), fig. 93, Tenapsetim, fragilis (Desh.), fig. 98 [is mexi 
cana (Sow.)], donaeiformis (Sow.), fig. 108, Florida [= floridana^ 
Conrad, 1846J. Moreover, many species are here figured for the first 
time. 
Cyrena. S. Clessin gives a monograph of this genus in the new edition 
of Chemnitz, pts. 258 & 263, pp. 101-128, Nos. 1-38, pis. xiii.-xxiii. 
Species new or not before figured are : C. rugulosa (Mouss., MS.), p. 106, 
pi. XV. figs. 1 & 2, Cape York, N. Australia, oviformis (Desh.), p. 107, 
pi. XV. fig. 3, Port Essington, alabamensis, sp. n., p. 144, pi. xix. figs. 3 & 
4, Alabama. 
Corbicula. S. Clessin begins a monograph of this genus in the new 
edition of Chemnitz, pts. 263 & 267, pp. 129-160, Nos. 1-49. New : G. 
viridis, p. 131, pi. xxiv. figs. 1 & 2, maltzaniana, p. 132, pi. xxiv. figs. 3 & 4, ‘ 
& crassa, p. 133, pi. xxiv. figs. 5 & 6, locality of all these unknown ; 
heuglini, p. 139, pi. xxv. figs. 1 & 2, Lake Tzana in Egypt [Abyssinia !] ; 
rivina, p. 140, pi. xxv. figs. 3 & 4, Murray River, Australia ; senegalensis, 
p. 141, pi. xxv. figs. 9 & 10, Senegal ; meridionalis^ p. 138, pi. xxv. figs. 13-17, 
Senegal ; rostrata, p. 142, pi. xxv. figs. 5 & 6, locality unknown ; viridula, 
p. 143, pi. xxv. figs. 19 & 20, locality unknown ; indica, p. 143, pi. xxv. 
figs. 21-23, East Indies ? ; natalensis, (Krauss, MS.), p. 125, pi. xxvii. 
figs. 19-21, Natal; alhida (Krauss, MS.), p. 156, pi. xxvii. figs. 25 & 26, 
River Lepenula, Southern Africa; alha^ p. 157, pi. xxvii. figs. 27 & 28, 
White Nile in Sennaar. 
Corbicula straminea and biformis, Reinhardt, SB. nat. Fr. 1877, p. 70, 
& C. transversa^ Martens, tom. cit p. 120, spp. nn., Japan. 
Corbicula yunnanensis and andersoniana^ spp. nn., Nevill, J. A. S. B. 
xlvi. pt. 2, pp. 40 & 41, Yunnan. 
Velorita cyprinoides (Cray) and cocliinensis (Haul.), Sowerby, in Reeve’s 
Conch. Icon. pts. 234 & 235, 1 pi. 
Sphcm'iwn. Clessin gives a monograph of this genus in the new edition 
of Chemnitz, pts. 257 & 258, pp. 75-99, Nos. 1-28, pis. ix-xii. The new 
or not before figured species are: S. oblongum, new name for Cyclas 
rivalis (Dupuy & Brard, nec Drap.) = S. corneum^ var. 3 (Bourg.), 
p. 83, pi. ix. figs. 25-27, France, wcsterlundl new name for corneum, var. 
nuclcum (Westferlund), p. 84, pi. x. figs. 6-8, Dalarne, Sweden, firmum 
(Clessin), p. 84, pi. x. figs. 9-11, Denmark and Northern Germany, 
mamillanum (Westerlund), p. 85, pi. x. figs. 12-14, Sweden, dupplicatum 
\dtipl-'\ (Clessin), p. 86, pi. xi. figs. 4-6, Lakes of Bavaria, draparnaldi, 
new name for Cyclas lacusfris (Drap.) ■= ovalis (Fer.) [1807] = consobrina 
(Fer.), p. 87, pi. xi. figs. 7-9, nearly all Europe, sandbergerl sp. n., 
p. 89, pi. xii. figs. 13-15, Wurzburg, Germany, ohense, sp. n., p. 90, pi. xi. 
figs. 12-14, Obi River, Siberia, pisidioides (Gray), p. 94, pi. x. figs. 3-5, 
England, sp. n., p. 95, pi. xi. figs. 18-20, Vegesack, near Bremen, 
dichini, sp. n., p. 96, pi. xii. figs. 18-20, Main River, near Frankfort, 
nitidum, sp. n., p. 98, pi. xii. figs. 9-11, Siberia. 
Sphccrium nitidum (Clessin, MS.) and levinodis, spp. nn., Siberia, at the 
Yenissei, lat. 69" and 62° N., Westerlund, Sv. Ak. Handl. (2) xiv. 2, 
No. 12, pp. 66 & 67, pi. i. figs. 19 & 20. 
Cyclas lusitanica, sp. n., Morelet, J. de Conch, xxv. p. 258, Portugal. 
1877. [voL. XIV.] B 14 
