LAM E LLIBRANCHIA. 
Moll. 57 
(Prime), p. G5, pi. vii. fig. 11, New Zealand; sihiricum wadi nordensidoldi 
(Westerlund), N.W. Siberia, pp. 6G & G7, pi. vii. figs. 15-17 & 18-20 ; forcli 
(Clessin), Lake of Constance and Geneva, below 20 metres, p.08, pi. viii. 
figs. 1-3; occupatum (Clessin), Lake of Neuchatel, G5 metres, p. G9, 
pi. viii. figs. 10-12; ttnwator (Clessin), Lake of Zurich, 28-50 metres, 
p. 70, pi. viii. figs. lG-18 ; profundurn (Clessin), Lake of Geneva, below 
GO metres, p. 70, pi. viii. figs. 13-15; demissam (Clessin), p. 71, pi. viii. 
figs. 19-21, Lake of Constance, below 20 metres; ovatum, sp. n., 
p. 72, pi. viii. figs. 22-24, Schwarzwald and Bairischer Wald, S. 
Germany; punctiferum ^ P-74, pi. viii. figs. 7 & 8, Trinidad. 
Of the above species, P. demissuin^ foreli, urinatoi\ occupatum^ and 
profundurn^ are described as new by Clessin, in Bull. Soc. Vaud. xiv. 
pp. 234-243, pi. iii. 
Pisidium pusillum (Gm.) observed creeping in damp moss, G-20 paces 
from water; D. Weinland, Weicht. Schwab. Alb, pp. 15 & 111, pi. iv. 
figs. 14-lG. 
Pisidium sordellianum^ sp. n., Pini, Moll. terr. di Esino, p. 133, Esino, 
Lombardy. 
Pisidium sihiricum, boi'eale, and mucronatum, spp. nn., Clessin, Nachr. 
mal. Ges. 187G, p. 103, Yenisei River, G0'^-G9'^ N. lat. 
Pisidium clarkeanum (Nevill), figured by Hanley & Theobald, Conch. 
Ind. pt. viii. pi. civ. fig. 10. 
Cardiidac. 
Cardium oimatum, sp. n., Sowerby, P. Z. S. 187G, p. 755, pi. Ixxv. fig. 2, 
Hongkong. 
Cardium edule (L.) var. rusticum (Lam.), in the Caspian Sea, rather 
small and sharply angulated ; Grimm, Kaspinskoe more i ego fauna, 
i. pp. 122-134, with many measurements, pi. vi. fig. 1. 
Donaciocardium, g. n. for Cardium donaciforme (Schroter) [Chemnitz] 
and australiense [Reeve] : Vest, JB. mal. Ges. ii. (1875), p. 322, and iii. 
pp. 290 & 291, pi. X. fig. 1 [= Ilemidonax, Morch, Mal. Bl. 1870, 
p.121], 
Didacna, Monodacna, Adacna : their affinity to Cardium discussed 
and the known spCcies enumerated ; Vest, JB. mal. Ges. iii. pp. 
292-317. M. caspia (Eichw.), colorata (Eichw., as Adacna)^ vitrea 
(Eichw.), and loeviuscula (Eichw.) figured, pi. x. figs. 2-4. 
Cardium [^Didacna'] crassum (Eichw.) and trigonoides (Pall.), in the 
Caspian Sea, connected by intermediate forms ; Grimm, 1. c. pp. 12G-131, 
pi. vi. fig. 2. 
Cardium [il/bwoc/acna] caspium (Eichw.) : several measurements of it; 
id. 1. c. pp. 134-136. 
Adacna vitrea (Eichw.) : id.'l. c. p. 142. 
Lucinida?. 
Lucina schrammi, sp. n., Crosse, J. de Con^’h. xxiv. p. 166, Guadeloupe ; 
nQtxv L. philippicma (MGQyQ). 
