884 



coiled round over the upper part of the canal, so as to leave it a 

 separate opening. Hah. China and Philippines. 



155. Cerithium semitrisulcatum (pi. clxxxv. f. 263), Bol- 

 ton, Cat. Conch. Coll. Yoldi, p. 57 , fid. Morch. C. sulcatum, var. 

 Kiener, pi. 27. f. 1. C. Martinianum ? 



Cerith. testa C. sulcato simili, sed laevigata ; costis longitudi- 

 nalibus planulatis. 



Of a less abbreviated form and smooth texture than C. sulca- 

 tum, the ribs being flattened and the sulci less deep. Port Es- 

 sington. 



156. Cerithium Australe (pi. clxxxv. f. 266), Quoy, Voy. 

 de 1'Astr. pi. 55. f. 7 ; Kien. Mem. Cerith. pi. 8. f. 2. 



Cerith. testa rugosa, longitudinaliter costis undulata, spiraliter 

 inasqualiter sulcata, nigra, prope suturam alba ; anfractibus ventri- 

 cosis ; apertura nigro lineata ; labio interno postice calloso ; colu- 

 mella brevi ; labio externo sinuato. 



Bather short, rugged, roughly and unequally ribbed, crossed 

 by sulci in threes ; aperture with a white callosity on the inner 

 lip, and the short columella white, the outer lip sinuous and not 

 thickened. Hah. Near Port Jackson. 



157. Cerithium zonale (pi. clxxxv. f. 264, 265), Brug. 

 Diet. no. 39. Tro. striatellus, Dillw. Cat. t. 2. p. 813. Lam- 

 pania zonalis, Gray. C. pirenale, Quoy. 



Cerith. testa C. Australi simili, sed pyramidali ; anfractibus haud 

 ventricosis, albo, nigro et fusco varie fasciato ; labio externe 

 tenue, profundi sinuato. 



An Australian shell, very much like the one previously de- 

 scribed (C. Australe), but more acutely pyramidal, varied by co- 

 loured bands, and with a deep sinus and prominent lower edge to 

 the outer lip. 



158. Cerithium septemstriatum (pi. clxxxv. f. 259, 260), 

 Say, Ainer. Conch, pi. 49. f. 2. C. peloritanum, Cantraine, fid. 

 Kiener, pi. 25. f. 2. C. nigrescens, Menke ? C. nigrinum, Ph. ? 

 C. albovittatum, C. B. Adams. 



Cerith. testa parva, obtusa, nigra, nonnumquam albo fasciata, 

 spiraliter sulcata ; anfractibus ad suturam crenulatis ; apertura 

 subpyriformi ; canali rotundo, emarginato. 



A very small and rather variable North American shell, which 



