82 TROCHUS. 



Monodonta ringens MENKE, Spec. Moll. Nov. Holl. p. 14, no. 53 

 (not M. ringens PHIL. 1846). T. ringens PHILIPPI, Conchyl. Cab., 

 p. 235, t. 36. f. 1. FISCHER, Coq. Viv., p. 213, t. 71, f. 1. 



May be known by the conical form, not depressed rior gibbous 

 like the majority of Clanculus. It is sometimes quite narrow, the 

 altitude greater than the diameter. 



T. LACEYI Sowerby Jr. PL 18, fig. 21. 



Shell conical, grayish-brown, all over covered with series of mi- 

 nute granules ; whorls 6, conspicuously bi-angulate ; last whorl slightly 

 convex beneath ; umbilicus white, deeply excavated ; aperture 

 oblique, fauces iridescent, obsoletely sulcate ; columella obscurely 

 folded above, conspicuously uniplicate at base. 



Alt. 14, diam. 13 mill. (Sowerby. ~) 



Port Elizabeth, S. Africa. 



Clanculus laceyi SOWB., Jo-urn of Conchol. (Leeds) vi, 1889, p. 11, 

 t. l,f. 16. 



An interesting bi-angulated species, more conical than C. car- 

 inatus. (Sowb.) 



Unfigured, imperfectly known and insufficiently described species of 

 Clanculus. 



The following species are known to me only by the descriptions, 

 which are reprinted in full below. A few have been recognized by 

 Australian naturalists, and in these cases I have given such addi- 

 tional information as is accessible to me. Most of those descriptions by 

 A. Adams, without either locality or measurements are mere trash. 

 Such careless work does not deserve recognition. 



The arrangement is alphabetical ; but the original sequence of 

 the descriptions may be determined by the species number. 



CLANCULUS ACUMINATUS A. Adams. C. testa elevato-conica ; 

 spira acuminata, fusca, nigro-fusca punctata, cingulis transversis 

 subdistantibus granorum ornata ; interstitiis lineis transversis et 

 longitudinalibus decussatis; margine umbilici subnodulosa ; col- 

 umella margine reflexo, integro, basi dente simplici magno terminate; 

 labro intus lirato. 



Sibonga, island of Zebu, under stones. (Cuming.) 



Proc. Zool. Soc. Lond. 1851, p. 160, no. 31. 



CLANCULUS ALBINUS A. Adams. C. testa conoidea, albida, cing- 

 ulis granorum confertis ornata, grauis nonnullis fusca-punctatis ; 



