867 



reddish or brown spots, and having a row of pointed tubercles on 

 the upper part of the whorls, close to the suture. 



75. Cerithium semiferrugineum (pi. clxxix. f. 75, 76), 

 Lamarck. C. tuberculatum, Sowh. Gen. 



Cerith. testa C. litterato simili, sed laevigata, magis tuberculata, 

 colore variegata. 



Although this species is also West Indian, and its form gene- 

 rally resembling that of C. Utteratum, it differs in being smooth 

 between the tubercles, which are more numerous and prominent ; 

 it is not tessellated, but the colours are laid on in irregular 

 patches. 



76. Cerithium piperitum (pi. clxxxi. f. 136, 137), Nobis. 

 C. punctatum, Bnig. E. Met. no. 40 ; Lamk. no. 34 ; Kien. Sp. 

 de Coq. p. 48. no. 35. pi. 16. f. 14. 



Cerith. testa turrita, varicosa, transversim striata, alba, rubro 

 aut fusco punctata ; anfractibus medio stria obsolete tuberculata 

 instructis, ultimo basi linea alba cincto. 



A pretty little species, with black or dark brown spots on 

 slightly raised rounded strise. Hab. Senegal, La7n. Smooth 

 variety. Philippines, Cimiing. The name punctatum was pre- 

 occupied by a Linnsean species. 



77. Cerithium tessellatum (pi. clxxxi. f. 133, 134), Nobis. 



Cerith. testa ventricosa, brevi, alba, punctis quadratis fasciatim 

 tessellata, minute granulata ; varicibus albis ; anfractibus subventri- 

 cosis, ultimo magno ; apertura ovah ; labio interno -violascente, 

 labio externo crenulato incrassato. 



A beautiful, small, veutricose, minutely granulated white shell, 

 tessellated with rows of square reddish-brown spots. Mr. Cum- 

 ing's collection from Darnley's Island, Australia, Jukes. 



78. Cerithium dorsuosum (pi. clxxxi. f. 138, 139, 140), 

 A. Adams, ined. 



Cerith. testa crassa, dorso elevata, subventricosa, subconica, 

 leviter striata, nigro vel griseo maculata ; anfractibus planulatis ; 

 apertura bicanaliculata, ad spiram elevata, subtrigona ; labio in- 

 terno postice calloso ; canali brevissimo. 



Thick, conical, ventricose, and remarkable for the elevation of 

 the dorsal part of the whorls. The aperture is rather trigonal, 

 and elevated towards the spire. Misamis, Island of Mindanao, 

 Philippines, H. Cuming. 



