736 MR. E. A. SMITH ON WEST-AFRICAN SHELLS. [Dec. 5, 



74. Protoma knockeri, Baird, Proc. Zool. Soc. 1870, p. 59. 



Hab. Whydah. 



This new genus and species is well figured at the above page. 



75. Trochita chinensis, Linn. Syst. Nat. p. 1257. 



Hab. Whydah. 



A well-known European species, extending to the Canaries and 

 "West Africa. 



76. Cerithium (Cerithiopsis ?) gemmuliferum, sp. now 

 (Plate LXXV. fig. 22.) 



Testa parva, elongata, pallido-brunnea ; anfract. 11, primi 3 laves, 

 perconvexi ; cceteri subplani, triseriatim granulati ; series infra- 

 suturalis minima ; aperlura subquadrata ; canalis brevis. 



Long. 4 mill., diam. 1. 



Hab. Whydah. 



This species at times probably attains a larger size. 



77. Cerithium (Cerithiopsis?) carinatum, sp. nov. (Plate 

 LXXV. fig. 21.) 



Testa elongata, pallido-brunnea ; anfract. 1 5, primi 3 Iceves.con- 

 vexi, cceteri plani, carinis tribus (infima maxima) cincti ; inter- 

 stitia longitudinaliter concinne striata; apertura subquadrata; 

 canalis brevis. 



Long. 6 mill., diam. basi lg. 



Hab. Whydah. 



78. Triphoris granulata, Ad. & Reeve, Voy. Samarang, p. 46, 

 pi. 11. f. 33, a, b. 



Hab. Whydah. 



The shells referred to this Chinese species differ in one character 

 from it ; viz. the granules of the middle row are constantly smaller 

 than those of the two adjacent ones, in this respect agreeing with 

 Triphoris fusca, Dkr., from Japan. 



79. Solariella canaliculata, sp. nov. (Plate LXXV. fig. 28.) 



Testa parva, late umbiUcata, margaritacea, pulcherrime prismatica ; 

 spira depresso-conica ; anfract. 5, primi 2 Iceves, cceteri spira- 

 liter lirali et infra suturam canaliculatam tubercularum albidarum 

 {hie illic castaneo notatarum) serie ornati ; anfract. vlt. carinis 

 cluabus custaneo-punctatis et basi zona purpureo-brunnea ductus ; 

 umbilicus perspective, chorda tuberculari marginatus ; apertura 

 subcircularis . 

 Alt. 2 mill., diam. maj. 3. 

 Hab. Whydah. 



A very pretty pearly species, with a channelled suture, and with 

 a row of tubercles beneath it ; about every seventh one is chestnut, 

 the rest whitish. The umbilicus is girt with a somewhat tubercular 

 chord and a zone of purplish brown. 



