18 ZOOLOGY OF THE VOYAGE OF THE SULPHUR. 



tibus octonis, rotundatis, costulatis, transversim striatis ; costulis rotundatis, suturam incurrentibus ; 

 infra suturam purpureo spiraliter fasciata, anfractu ultimo iterata ; labro intus crenulato ; apertura 

 ovali ; canali brevi. 



Inhab. Gulf of Nicoya, Central America. In eighteen fathoms, mud. 



54. Clavatula scalaris, Hinds, 1. c. p. 39, (Plate VI. fig. 2.) Testa fusiformi, acuminata; 

 anfractibus septenis, rotundatis, scalariformibus, transversim striatis ; costulis rotundatis, distantibus, 

 suturam incurrentibus; sutura simplici ; labro arcuato, intus Isevi ; sinu laterali prope suturam; 

 apertura ovali ; canali brevi. 



Inhab. Straits of Macassar. In twelve fathoms, coarse sand. 



The ribs assume the character of the varices in Scalaria, as they are 

 contracted, rounded, and so incurrent at the suture as almost to give the 

 appearance of separating the whorls ; the sinus is between the body of the last 

 whorl and the thin smooth labrum. 



55. Clavatula cinerea, Hinds, 1. c. p. 40, (Plate VI. fig. 3.) Testa ovata, acuminata, anfrac- 

 tibus septenis, longitudinaliter tuberculato-costatis, transversim striatis; costulis anfractus ultimi 

 furcatis ; sutura crenata ; labro incrassato intus et cum columella crenulato ; apertura ovali, obliqua : 

 canali breviusculo. 



Inhab. ? 



The ribs of the last whorl are forked nearly throughout, and the suture is 

 covered by a close crenation. 



56. Clavatula argillacea, Hinds, 1. c. p. 40, (Plate VI. fig. 1.) Testa ovata, acuminata, laevi- 

 gata, cornea: anfractibus septenis, tuberculato-costatis ; costulis superne angulatis, anfractus ultimi 

 evanidis ; sinu laterali magno ; labro incrassato intus et cum columella crenulato; apertura ovali, 

 elongata ; canali breviusculo. 



Inhab. Straits of Malacca. From seventeen fathoms, mud. 



57. Clavatula rubida, Hinds, 1. c. p. 40, (Plate VI. fig. 6.) Testa ovata, acuminata, rufa, 

 anfractibus septenis, rotundatis, costatis, transversim striatis ; costis rotundatis, latis, suturam 

 i-implicem incurrentibus; labro subincurvo, intus dentato; apertura ovali, oblonga; sinu laterali 

 prope suturam ; canali brevi. 



Yak. Nigro et albo fasciata. 



Inhab. New Guinea. From seven fathoms, mud. The variety is from New 

 Ireland, among coarse sand at low water. 



A deeply coloured shell, varying from an uniform dark red to the variety 

 banded with white and black on the last whorl, and with a black line over the 

 suture. 



58. Clavatula luctuosa, Hinds, 1. c. p. 40, (Plate VI. fig. 4.) Testa ovata, acuminata, nigri- 

 cante, crassa; anfractibus nonis, laevigatis, superne subplanu latis, prope mediam uniseriatim tuber- 



