BY C. HEDLKY. 467 



in my list. I have seen a form of C. arruense from New 



Caledonia. 



Camita rotellina Gould. 



Trochus (Monodonatd) rotellinus Gould, Proc. Boston Soc. Nat. 

 Hist. iii. 1860, p.180; U.S. Expl. Exped. p.191, Pl.xiii. £.222. 



A single worn shell which I found at Green Island, North 

 Queensland, enables me to add a genus to the Australian fauna. 



Astralium pagodus Ten.-Woods. 



Ten.-Woods, these Proceedings, iv. 1879, p. 110. 



These notes on obscure Australian Trochidse may be concluded 

 by remarking that the above name by Tenison- Woods was based 

 on a juvenile example of Trochus niloticus Linne. The young of 

 this shell differs from the adult whorls in form and sculpture. 

 The error of regarding it as a distinct species had previously been 

 perpetrated by Chemnitz and Lamarck.* Such a mistake is more 

 excusable in foreign than in local workers. 



Capulus nutatus, n.sp. 

 (Plate ix. figs. 15-1 6.) 



Shell small, rather thin, bilaterally symmetrical, low, broadly 

 ovate. Apex at about four-fifths of the length, on the median 

 line, minute, almost vertically inrolled. Colour rufous-brown, 

 either uniform or variegated by pale rays. Sculpture : coarse 

 concentric growth-lines are corrugated by numerous delicate radial 

 folds. Length, 5*6; breadth, 4 8; height, 3 mm. 



Hab. — Not uncommon in shell-sand around Sydney. 



At first acquaintance I had regarded this as not adult, but a 

 considerable series now convinces me that it does not growappre-, 

 ciably larger than here described. The records from Sydney of 

 Cochliolepas subrufa by Angasf and of Hipponyx danieli by Henn 

 and Brazier J were doubtless based on the species under discus- 



* T. mar moratus Desha, j es, Anim. s. vert. 2nd ed. ix. 1843, p. 139, footnote. 



+ Proc. Zool. Soc. JS67, p.212. 



X These Proceedings (2), ix. p. 170. 



