861 



canal and on the varices ; this species has its whorls cancellated 

 by cnrved ribs crossed with elevated Hues (the upper ones most 

 strongly) , and the whorls are separated by a hollow suture. Island 

 of Bureas, Philippine, H. Cuming. 



48. Cerithium seeotina (pi. clxxx. f. 102), A. Adams. 



Cerith. testa elongato-turrita, pallide fulva ; anfractibus nume- 

 rosis, raedianis subventricosis, longitudinaliter plicatis, spirahter 

 striatis, ultimo snbcontracto, ad aperturam expanso ; apertura cir- 

 culari ; labio externo expanso ; canali contracto, brevi, recto. 



A beautifully formed turreted shell, a little swelled iu the centre, 

 with numerous short whorls, the last of which is contracted on one 

 side, but expanded towards the aperture. There is a peculiar con- 

 traction close to the canal, at the lower part of the body-whorl. 

 In Mr. Cuming's collection, from Van Diemen's Land. 



49. Cerithium rhodostoma (pi. clxxx. f. 103), A. Adams. 



Cerith. testa C. serotina: simili sed breviuscula ; anfractu ultimo 

 ad aperturam vix expanso. 



A shorter shell than C. serotina, with fewer whorls and the last 

 not so expanded at the aperture. The shell is in Mr. Cuming's 

 collection ; probably from the same locality as C. serotina. 



50. Cerithium rostratum (pi. clxxx. f. 104), Nobis. 



Cerith. testa fusiformi, tenui, pallida, costata, inter costas linea- 

 tim rubro-punctata ; anfractibus in medio ventricosis, ultimo con- 

 tracto ; apertura rotunda ; labio externo expanso, varicoso ; canali 

 producto, nigro. 



This pretty little fusiform species has the middle whorls swelled 

 and ribbed with little red linear spots between the ribs. The last 

 whorl is contracted, but the outer lip is expanded and varicose. 

 The canal is long, and tipped with black. The typical variety is 

 in Mr. Cuming's collection, from the Philippines. That collec- 

 tion also contains a specimen from Lord Hood's Island, which 

 resembles it, excepting that the canal is not produced ; the mouth 

 is not fully formed. 



51. Cerithium ravidum (pi. clxxx. f. 105), Philippi, Ab- 

 bild. Cerith. t. i. f. 8. 



Cerith. testa fusiformi, fusca, fasciata ; anfractibus costatis et 

 spiraliter acute sulcatis, ultimo lata; canali elongato, paululum 

 recur vo, truncato ; apertura expansa ; labio externo uni varicoso. 



Taken by Mr. Cuming in sandy mud at Cagayan, Misamis, 



