GASTROPODA (pECTINIBRANCHIA). 
Moll. 43 
Volutidj:. 
This natural family exhibits a gradual reduction of the radula from 
the normal Rhachioglossan type, one median and on each side one lateral 
plate, Voluta concinna, to a median plate with only one cuspid and no 
laterals, Amoria [see also Cymbium olio] ; E. v. Martens, Conchol. MT. 
ii. pp. 127 «§: 128. 
Voluta (^P seplioea') concinna (Brod.), median plate of the radula tricus- 
pidate, lateral plates unicuspidate ; Schacko, Conchol. MT. ii. pp. 126 & 127, 
pi. xxiv. fig. 5. 
Voluta roadniglitm^ sp. n., M‘Coy, Ann. N. H. (5) viii. p. 89, pi. vii., 
Southern coast of Victoria. 
Cymbium olla (L.). G. Schacko has examined the radnla of an embry- 
onal specimen, and states that the first three plates have no cuspids at all, 
the 4th — 7th only one median, the lateral cuspids begin in the 8th, are 
first very small, become equal to the median in the 12th plate, and longer 
in the following ; Conchol. MT. ii. pp. 123-126, pi. xxiv. figs. 3 & 4. 
C0LUMBELLID.E. 
Columbella buchholzi, sp. n., Victoria, near Cameroons, W. Africa, and 
fasciata (Sow.), Java, varieties: E. v. Martens, Conchol. MT. ii. pp. 118- 
121, pi. xxiii. figs. 8-17. 
Columbella (^Astyrie) amphissella and verrilli, spp. nn., Dali, Bull. Mus. 
C. Z. ix. p. 91, Gulf of Mexico, 310-805 fath. 
Columbella {Anachia) ostreicola, sp. n., Melvill, J. of Conch, iii. p. 160, 
on oyster shells at Appalachicola, Gulf of Mexico. [Not duly described ; 
Reg.] 
Columbella P rubra^ sp. n., Martens, SB. nat. Fr. 1881, p. 77, East Coast 
of Patagonia. 
MARGINELIilDiE. 
Marginella watsoni, fusina, seminula, yucatecana, torticula, and {avena 
var. ?) avenella, spp. nn., Dali, Bull. Mus. C. Z. ix. pp. 71-73, Havana 
and Yucatan Strait, 152-800 fath. 
Marginella rubens and patagonica, sp. n., E. v. Martens, SB. nat. Fr. 1881, 
pp. 63 & 64, and Conchol. MT. ii. pp. 116 & 117, pi. xxiii. figs. 1-7, 
Patagonia. 
C0NID.E. 
Conus thomasi, Red Sea, prevosti, New Caledonia, hocki, Amboyna, 
gloynii, locality unknown, and lombei, Mauritius, spp. nn., Sowerby, 
P. Z. S. 1881, pp. 635-637, pi. Ivi. figs. 3-7. 
Conus claj'us, sp. n., E. A. Smith, Ann. N. H. (5) viii. p. 442, West 
Australia. 
Comis brazieri, sp. n., G. B. Sowerby, Jun., J. of Conch, iii. p. 234, pi. i. 
fig. 9, Solomon Islands. 
