C E R 1 T H I U M . 



Plate IX. 



Species 55. (Mus. Cuming.) 



Cekithium Eriense. Cerilh. testa elongald, migustd, 

 fiisco-nigrescode, aiifructiljiis niimerosis, triseriatini 

 tiibercidatis, sidiu-d excavata, aperturd ovall, canali 

 brevi, aperto, labro crenato. 



The Erie CERiTiiitiJt. Shell elongated, narrow, blackish- 

 brown, wliorls nunieroii.?, tuberculated in three rows, 

 suture excavated, aperture oval, canal short, open, 

 outer lip crenulated. 



V.\LENCIENN£S. 



Hab. Honduras Bay. 



A tall dark-brown shell, very regularly tuberculated in 

 three rows on each upper whorl. 



Species 50. (Fig. a, b, JIus. Cuming.) 



CJerithium doksuosum. Cerilh. testd brevi, acHmmatd, 

 apice incurod, dorso in tumorem magnum elevafo, albd, 

 mncidis magnia irregularibns variegatd, aperturd 

 parvd, postice canaliferd, colninelld brevi, poslice cal- 

 losd, labro iiicrassato, albo, inlns lavigalo. 



The hunchback Ceuithium. Shell short, acuminated, 

 with the apex bent inwards and the back elevated 

 into a larjre hump, white, variegated witli large irregu- 

 lar blackish spots, aperture small, with a canal at the 

 back, columella short, callous at the back, outer lip 

 thick, white, smooth within. 



A. Adams, Sowerby's Thes. Conch. Cerithium sp. 78. 



Rah. Misamis, island of Mindanao, Philippines ; Cuming. 



This and the following species are remarkable for the 

 tumour-like elevation at the back of the two last whorls. 



Species 57. (Mus. Cuming.) 



Cerithium aduncum. Cerilli. testd brevi, acuminata, 

 apice incurvd, dorso in tumorem elevato, spiraliter 

 striata, gri.sed, lineis nigrescentibus cinctd, aperturd 

 parvd, postice canaliferd, columella brevi, postice cal- 

 losd, labro iitcrassalo, albo, intiis crenulato. 



The crook-back Cerithium. Shell short, acuminated, 

 with apex bent inwards and the back elevated into a 

 large tumour, spirally striated, grey, with blackish 

 lines, aperture small, with a canal at the back, colu- 



mella short, callous at the back, outer lip thick, white, 



crenulated within. 

 fiotJLD, Otia Conchologica. 

 Hab. Island of Mi\idanao, Philippines ; Cuming. 



Differing from C'. dorsuosnm only in the ridges of the 

 outer lip, which in tliat species is smooth. 



Species 58. (Mus. Cuming.) 



Ceritui UM nigro-FASCIATUM. Cerilh. testd brevi, crassd, 

 siibventricosd, albd,fasciis nigris latis cinctd, spiraliler 

 striold, tuberculis magnis in seriebiis tribus arnuila, 

 aperturd albd, canali breviusculo, labro crenulato. 



The black-banded Cerithium. Shell short, thick, 

 rather ventricose, white, girt with wide black bands, 

 spirally striated, armed with large tubercles in three 

 rows, aperture white, canal rather short, outer lip 

 crenulated. 



SOWEIIBY, MS. 



Hub. Philippines ; Cuming. 



Possibly not distinct from C. bifasciaimn, but the black 

 bands are broader, covering three rows of tubercles. 



Species 59. (Mus. Cuming.") 



Cerithium carbonarium. Cerilh. iesld brevi, albula. 

 anfractibus paucis, tuberculis nigris oralis in seriebus 

 tribus CMimo quinque) dispositis, aperturd nigro- 

 fasciatd, columelld brevissimd, canali brevissiwo, operlv. 



The collier's Cerithiu.m. Shell short, rather white, 

 whorls few, with black oval tubercles in three rows 

 (five apjjear in the last), aperture banded with black, 

 columella very short, canal very sliort, open. 



Philippi. 



Hub. Island of Panay, Philippines ; Cuming. 



Species 6(J. (Mus. Cuming.) 



Cerithium inflatum. Cerilh. testd brevissimd, ventri- 

 cosissimd, nigrd, aperturd et varicibus albis, ■■ipiraliler 

 striata, rugosd, longitudiualiter plicatd, plicis noduli- 

 feris, aperturd niagnd, canali breviusculo, labro intu.s 

 lirato. 



The inflated Cerithium. Shell very short, very ven- 



October, 1SG5. 



