BIVALVIA. 
MolL 103 
Arcidj:. 
Area stigmosa (Dunker), young, = Barhatia eximia (Dunker), full 
grown, Liberia and Prince Island, W. Africa; A. ])lieata (Chemn.), spe- 
cimens from the Cape Verde Islands and Red Sea not specifically distinct ; 
A. afra (Gmel.), Cape Verde Islands. Dohrn, JB. mal. Ges. vii. pp. 
173-177. 
Pectunculus gaditanus (Gmelin), Hidalgo, Mol. Mar. do Espana, pi. Ixxiii 
fig. 23, one of the largo species of the Mediterranean. 
Fectunculus forinosus (Reeve) from the Cape Verde Islands, 'Dohrn, 
JB. mal. Ges. vii. pp. 172 & 173 (Reeve’s fig. a is another species) 
NuCULIDiE, 
Nucula uruguayensis, sp. n., E. A. Smith, Ann. N. H. (5) vi. p. 320, 
off the estuary of the Rio de la Plata, Uruguay, 48 fath. 
Yoldia vancouverensis, sp. n., id. 1. c. p. 289, Vancouver Island. 
Pectinid.®. 
Pecien mirificus (Reeve), specimen from Mauritius, P. lividus (Lam.) 
= serratus (Reeve), and cuneolus (Reeve), varieties in colour ; Martens, 
Moll. Maur. pp. 313 & 314, pi. xxii. figs. 5-15. 
Lima (Mantellum') tenuis (H. Ad.), note on the living animal by 
Mobius, it swims and crawls by means of the cirri of the mantle. 
Martens, Moll. Maur. p. 315. 
OSTREIDAi:. 
Ostrea. A small anterior (probably pedal) muscle 'pointed out by W. 
Dali, Bull. Soc. Washington, iii. p. 36. 
Intestinal tract of the oyster described by J. A. Ryder, Am. Nat. xiv. 
pp. 674 & 675. 
Ostrea, edulis. The green colour of some oysters is caused by occurrence 
of a Diatomacean, Navicula fusiformis var. ostrearia (Grunow) ; Puy- 
segar, “ Notice sur la cause du verdissement des huitres” (Paris: 1880, 
9 pp. 1 pi.) ; also in Revue maritime et coloniale, Feb. 1880 ; abstract in 
Nature, xxii. p. 549, and in J. R. Micr. Soc. iii. p. 931. 
Oysters are found in Norway from the mouth of Christianiafjord to 
that of Namsenf jord, 65® N. lat., but of no great importance ; H. B . [Baars] , 
Die Fischerei- Industrie Norwegens (Bergen : 1880, p. 53). On the 
Swedish coasts of the Kattegat ; G. v. Yhlen, Catal. of the Swedish part 
of the International Exhibition of Fishery at Berlin, p. 53. 
Oysters of S.W. France. Ostrea angulata (Lam.) lives in the mouth of 
the Gironde, in the littoral zone, above low water mark, with Patella vul- 
gata, &c., 0. edulis (L.) in the Laminarian zone, 0. eocJiledr (Poli) in the 
zone of Corallines ; P. Fischer, J. de Conch, xxviii. pp. 83-86. 
Note on the oysters of Venice by A. Ninni, Catalogo della Sozione 
