PELECYPODA. 
Moll. 79 
Limnoperna , n. g., for Mocliola siamiensis , Morelet, and L. lemeslei , n. sp., 
Cochin China ; Rochebrune, (3) pp. 102 & 104. 
Modiola : French forms of the genus revised, 11 species being admitted 
and the following described as new — M. mytiloides , p. 92, pi. i, fig. 2, M. 
ptcrotci , p. 95, fig. 3, M. brachytera, p. 116, fig. 9 ; Locard (4). M. ovalis, 
n. sp., Chili ; Clessin, (4) p. 128, pi. xxxiii, figs. 4i& 5. 
Mytilua irisans , n. sp., Red Sea ; Jousseaume, p. 215. 
ARC ACE A. 
Arcidje. 
Area amalice, n. sp., hab ? ; Kobelt (7), and (3) p. 26, pi. viii, figs. 1 
& 2. 
A. ( Anomalocardia ) sphcerica , n. sp., hab. P ; id. t. c. p. 53, pi. xv, figs. 3 
& 4. A. (4.) d'Orbignyi , n. sp., W. Indies ; id. (13). 
Cucullcea : 2 species recognized ; id. (3). 
Parallepipedum fauroti , n. sp., Aden ; Jousseaume, p. 214. 
Nuculidjj. 
Malletia angulata , n.sp., Bay of Bengal, 200fath.; Sowerby, (1) p.208, 
pi. xi, fig. 15. 
SUBMYTILACEA. 
Unionidac. 
Notes on British forms ; Roberts (4). 
Anodonta nefaria , A. nocturna , A. quadrangulala. pi. ix, fig. 1, A. ger- 
manica , A. visurgisina , pi. viii, fig. 3, A. modern , pi. ix, fig. 4 , A. eusomata, 
A. alsterica f n. spp., Hamburg; Servain, (2) pp. 325-337. A. baetica, 
n. sp., Seville ; Kobelt, (1) p. 57, pi. xc, fig. 498 ; also id. (8) p. 28. A. 
calderoni , n. sp., Andalusia ; id. t. c. p. 26. A. ambrosiana } p. 250, fig. 30, A. 
cobelliana, p. 252, fig. 31, A. slrobeliana , p. 255, A. zenii , p. 258, fig. 28, 
n. spp., N. Italy; Adami. A. brandti , Armenia, p. 108, A. formosa, 
A. tremula } France, p. 109, A. convexa, A. amnica , France, p. 110, n. spp. ; 
Drouet. A. laminata, n. sp., Cochin China ; Rochebrune, (3) p. 40. 
A. legumen , n. sp., Rio Grande; Martens, (5) p. 65. A. cygnea and 
A. anatina, merely varieties ; Webb: distinct species ; Roberts (5). 
Measurements of various species by Bourguignat criticized ; SchrO- 
der (2). 
Chelidonopsis, n. n. for Chclidonura } Rochebrune ( nee Adams) ; Ancey 
(6). 
Diplodon ludovicianum , n.sp., Cochin China; Rochebrune, (3) p. 43. 
Dysnomia pavonina , n. sp., Cochin China ; id. ibid. 
Harmandia , n. g., for H. somboriensis y n. sp., Cochin China ; id. t. c. 
pp. 45 & 46, pi. i. 
Pseudodon anodontinum , P. pierrei , P. mabilli , P. sulcatum , n. spp., 
Cochin China ; id. t. c. p. 41. 
