109 



Length, 10 ; breadth, 6 ; length of aperture, 8-5 ; of canal,. 

 2-5. 



Locality. — Turritella clays, Aldinga Bay. 



GrEirrs Teopho^-. 



STXOPSIS OF SPECIES. 



I. Shell small, elongate fusiform. 



Xuclear whorls almost unrolled, tip erect. 



Whorls angulated, transversely lamellate. 



1. T. polypJiyllus.. 

 "Whorls angulated, plicate. 2. T. Irevicaiidatus.. 



Whorls ventricose, apical whorls gradated. 



3. T. torguatus. 

 Nuclear whorls mamillate. 



Whorls transversely lamellate. 



Whorls convex ; apex turbinate. 



4. T. icosip}iyllu&.. 

 Whorls gradated ; apex subcylindrical. 



5. T. hypsellus. 

 Whorls transversely plicate. 



Aperture variced ; lir^e on penultimate whorl 

 six, unequal. 6. T. ononotropis. 



jS'o marginal varix ; liras 10, equal. 



7. T. mancjelioides, 

 II. Shell stout, oblong, purpuroid. 8. T. anceps, 



SPECIES EXCLUDED. 



T. succinctus, T. Woods is transferred to Perisiernia. 



1. Trophon polyphyllus, T. Woods. 



Troplion polypliyllia, T. Woods. Proc. Lin. Soc, K'.S.W.,, 

 yol. iv., pi. ii., fig. 1, 1879. 



Shell elongate fusiform, almost turriculate, thin, with a pro- 

 duced spire terminating in an acute apex composed of two and 

 a half smooth rounded whorls, the extremity of which is erect. 



Spire whorls three, excluding the nuclear ones, medially 

 angular, and ornamented by numerous elevated lamelliform 

 costae (15 to 20 on the anterior whorl) which are raised into 

 vaulted scales on the angulation of the whorl. On the penul- 

 timate whorl there is usually a spiral thread midway between 

 the keel and the anterior suture, and often one at the suture 

 which imparts a quadrate outline to this whorl. 



The body whorl is roundly truncated in the middle, and is- 

 encircled with three stout threads; the lamellose costse are 

 continued on to the beak, the extremity of which is encircled, 

 with two threads. 



