CERASTUS. 267 



further comprises five specimens from Poona. These range in 

 dimensions from 21x12 to 19x1 1*5 mm., and have the trans- 

 verse striae more pronounced and more regular than is the case in 

 typical jerdoni ; the spiral incised lines, on the other hand, are 

 not so wavy and not quite so apparent, while the peristome is 

 more expanded, the columellar margin especially being very 

 broadly triangular. 



237. Cerastus moussonianus, Petit. 



Bulimus moussonianus, Petit, Journ. Conchyl. ii, 1851, p. 266, pi. 7, 



fig. 4; Pfeiffer, Mon. Helic. Viv. iii, 1853, p. 346; Hanley & 



Theobald, Conch. Ind. 1870, pi. 21, fig. 4. 

 Buliminus (Cerastus) moussonianus, Nevill, Hand List, i, 1878, 



p. 182 ; Kobelt, Oonch.-Cab., Fam. Buliminidae, 1900, p. 676, 



pi. 102, fig. 21 : torn. cit. 1902, p. 892, pi. 127, figs. 12-16. 

 Bulimina ( Cerasiiis) moussoniana, Pfeiffer & Clessin, Mon. Helic. 



Viv. 1881, p. 286. 

 Cerastus moussonianus, Kobelt & Mollendorff, Nachr. Deuts. Malak. 



Ges. 1903, p. 41. 

 Buliminus moussonianus, Peile, Journ. Bombay Nat. Hist. Soc. xi, 



1908, p. 131. 



Original description : " B. testa ovato-ventricosa, tenui, trans- 

 lucida, umbilicata, pallide cornea ; spira conica ; anfractibus senis 

 convexis, longitudinaliter minuteque striatis ; striis obliquis ; 

 apertura subrotundata ; labro tenui, expanso, subreflexo ; um- 

 bilico parvo. 



" Long. 16, larg. 9 mill." (Petit.) 



Hob. India : Bombay (Charbonnier) Ahmednuggar (Fairbank) ; 

 Baroach, Khandala, and Surat (Blanford, Fairbank) ; Sholapur 

 (West)-, Bombay Island (Peile) ; Kutch (Stoliczka). 



Petit states that it is near B. abyssinicus, but shorter and not 



Fig. 99. Cerastus moussonianus, var. Shell f , sculpture f . 



as widely umbilicated, while Kobelt considers it probably a variety 

 of that species. Pfeiffer and Clessin, on the other hand, are 

 rather inclined to regard it as synonymous with B. char- 

 bonnieri, Pfr. 



To judge from Petit's original figures I must consider it nearer 

 to C. abyssinicus, but it has a more inflated body-whorl and the 

 ribs appear more crowded. From C. charbonnieri it may be 



