Formed like C. Sowerbii and C. nobile, but distinguished by 

 spiral riblets, granulated and spotted between the granules, and 

 a row of tubercles at the suture. The closely grained variety is 

 in Mr. Hanky's collection. This species is commonly called the 

 "Chinese Obelisk." 



13. Cerithium semigranosum (pi. clxxvii. f. 36, 37), LamJc, 

 Anim. s. vert. no. 18. 



Cerith. testa C. obelisco simili, sed sulcis spiralibus paucis 

 latis magis elevatis; anfractibus ad suturam tuberculis rotun- 

 datis. 



The nodules at the suture of this species are not sharp, but 

 rounded and partly confluent with the highest row of granules, 

 which are distant and broad : in these respects it differs from 

 C. obeliscus. The beautifully mottled specimen belongs to Mr. 

 Metcalfe. New Holland. 



14. Ceeithium cedo-nulli (pi. clxxvii. f. 38, 39, 40), Nobis. 



Cerith. testa C. obelisco simili, sed breviorej sulcis rariusculis, 

 tuberculis ad suturam magnis. 



A shorter and less pyramidal shell than C. obeliscus, with the 

 ridges of granules more distant, and the row of tubercles at the 

 suture very prominent and large. The variations in colouring arc 

 beautiful and striking. Island of Annaa, in the South Pacific, 

 II. Cuming ; Borneo, Lieut. Taylor, R.N. ; and Philippines, H. 

 Cuming. 



15. Cerithium pulciirum (pi. clxxvii. f. 25), A. Adams. 

 Vertagus pulcher. 



Cerith. testa pyramidali, solida, pallida, ad suturam perelevatim 

 nodulosa, inter nodulos nigro-maculata, omnino minute granosa 

 et cancellata; apertura brcvi; labio interno uniplicato, antice 

 laminato ; labio externo arcuato ; canali abrupte ad dorsum re- 

 fiexo. 



In form resembling C. obeliscus, this beautiful shell is minutely 

 cancellated in every part and at the sutures, the whorls are gra- 

 dated and crowned by a series of rounded nodules, having a black 

 spot between each. Mr. Cuming has the specimen from North 

 Australia. 



16. Cerithium articulatum (pi. clxxvii. f. 26, 27), A. 

 Adams et Reeve. Vertagus articulatus. 



Cerith. testa C. obeliscus simili, sed anfractibus subinciso-sul- 



