Dr. E, von Martens on some Species of Assiminea. 205 
Lives, with the Awricule and some Paludine (Hydrobia pro- 
bably), in the lagoons of Villa Reale, which the ebb leaves almost 
dry during a great part of the day. 
I received, many years ago, from Nantes a small shell resem- 
bling in size and general form the well-known AHydrobia ulve, 
but with flatter whorls, of pale-yellow colour, and the peculiar 
smooth greasy appearance of the Assiminee. I think it to be 
the species described by Morelet. 
b. Species from the West Indies. 
Assiminea helicoides (Paludinella helicoides, Gundlach, in 
‘Repertorio Fisico-natural de la Isla de Cuba,’ entrega 3°, Ha- 
bana, Junio 1865, p. 70). Umbilicated, whitish, somewhat 
glossy, with four rounded whorls. Length 1, diameter 14 millim. 
Inhabits the land immediately near the sea, in company with 
some Auriculacea; is not submerged, but occurs under leaves, 
on moist beaches, littoral of Cardenas, Cuba. 
I have not seen this shell; but the locality given seems to 
indicate an <Assiminea, and the description contains nothing 
repugnant to this supposition. It would be the most depressed 
species I know of, 
G: Sackies from the shores of the Indian Ocean. 
1. Without keel. 
Assiminea Francisci, Gray, Wood (Paludina conica, Troschel, 
Wiegmann’s Archiv fiir Naturgesch. 1837; Philippi, Icones, 1. 
1.15; Kiister, ‘ Paludina, 6. 15-17). Estuary of the Ganges. 
A variety with a white spiral band, collected with the type by 
Lamare Picquot, seems to agree with the specimen I saw some 
years ago in the Museum of the Kast India Company, named 
Assiminea fasciata, Cantor. 
Assiminea cornea (Hydrocena cornea, Pfr. Pneum. Suppl.p. 156). 
Bashi Islands. Cuming’s collection. 
A. brevicula ( (Hydrocena brevicula, Pfr. p. 156). Singapore, 
A. pinguis, m. ts b 
ee above. 
A. miniata, m. 
2. A keel round the umbilicus. 
A. carinata, Lea. See above. Siam, Cochinchina. 
A. radiata (Hydrocena radiata, Pfr. Pneum. Suppl. p. 163). 
Borneo. Cuming’s collection. 
A. glabrata (Hydrocena glabrata, Pfr. ibid. p. 164). Borneo. 
Cuming’s collection. 
A. lirata (Hydrocena nat, Morelet, Journ. Conch. xi. p. 371). 
Cochinchina. 
