80 THE NAUTILUS. 



genus. It is related to K. (f) ceratodes Gude, but that is a much 

 smaller and smoother shell. K. gudei was at one time identified 

 with H. labilis and with H. pupula of Gould, both described from 

 Hakodate, but Mr. G. K. Gude directed attention to its distinctness 

 from these species. 



CONTRIBUTIONS TOWARDS THE KNOWLEDGE OF THE MOLLUSCA OF 



MADAGASCAR. 



BY C. F. ANCEY. 



Clavator Johnsoni E. A. Smith. 



Hab.: Central Madagascar (Humblot). 

 Clavator obtusatus Gmelin. 



Hab.: Fort Dauphin, S. Madagascar (F. Sikora). Also found at 

 the northern er.d of the island (Alluaud). 



Clavator Humbloti Anc. 



Testa magna, imperforata, elongato-attenuata, solidula, epidermide 

 fusco lutescente infra, transverse et exiliter fusco multifasciata in- 

 duta, sub epidermide alba, nitidula. Spira regulariter usque ad 

 apicum attenuata, elongata, obtusa. Anfractus 9? (supremi fracti), 

 regulariter crescentes, convexiusculi, sutura mediocri in ultimis 

 minute et leviter subcrenulata discreti, longitudinaliter striis confertis 

 incrementi exarati, in 5 inferis lineis spiralibus impressis magis dis- 

 tantibus decussati ; ultimus elongatus, inferne attenuatus. Apertura 

 subobliqua, basi leviter recedens, irregulariter oblongo-attenuata, 

 superne angulata, basi ampliata, intus ccerulescens. Columella 

 antice angulatum producta, intus contorto-subplicata, crassiuscula. 

 Peristoma obtusum, supra columellam dilatatum et adnatum, mar- 

 ginibus distantibus, callo nitido basi proecipue conspicuo junctis. 



Long. 95, diam. 27^, alt. apert. 31 mill. 



Hab.: Antankaratra Country (Humblot). 



This fine species appears to be allied to CL MoreJeti Desh., but is 

 much larger and is very distinct. 

 Pachnodus rufoniger Reeve. 



Hab.: " Montagne d'Ambre," Diego Suarez ; Antankaratra (Hum- 

 blot). 



