CEEASTUS. 265 



Original description : " T. anguste uinbilicata, conico-ovata, 

 solidula, conferte striata, parum nitida, sordide albida; spira 

 elongato-conica, apice obtusa ; arifr. 6 convexi, ultimus i longi- 

 tudinis subsequans, juxta umbilicum leviter compressus ; apertura 

 obliqua, angulato-ovalis ; perist. tenue, marginibus approximates, 

 callo tenuissirao, superne tuberculifero junctis, dextro perarcuato, 

 breviter expanse, columellari dilatato, breviter patente. 



"Long. 14, diam. 7J mill. Ap. 6| mill, longa, 4 lata." 

 (Pfeiffer.) 



Hob. India : Ahmednuggar, Deccan (Fairbank, JBlanford). 



The species never having been figured, I have taken the 

 opportunity of illustrating the type in the Cuming collection. 

 The shell bears some resemblance to that of C. redfieldi, Pfeiffer, 

 being similar in shape, but it is smaller and has a narrower 

 umbilicus. It is furnished with very fine spirals on the body- 

 whorl, where the transverse striae are less distinct than on the 

 other portions of the shell. 



Fig. 98. Cerastus 'malabaricus. f. 



I have seen five specimens in the Beddome collection, also from 

 Ahmednuggar, which are a trifle larger than the type, measuring 

 15x9 mm., and are a little more fuscous, with the body-whorl 

 not quite so tumid. 



Blanford appears to have found it necessary to alter the specific 

 name* on the plea that the habitat is not in Malabar, as Pfeiffer 

 erroneously thought, but in the Deccan. In view of the admitted 

 fact, however, that a specific name is intended to " designate, not 

 to describe," I have found it expedient to disregard the latter name 

 and to revert to Pfeiffer s original designation. 



236. Cerastus jerdoni, Reeve. 



Bulimus jerdoni (Benson), Reeve, Conch. Icon, v, 1848, Bulimus, 



pi. 46, fig. 297 ; Pfeiffer, Mon. Helic. Viv. iii, 1853, p 335 ; 



ibid., Conch.-Cab., Bidimus, 1853, p. 73, pi. 20, figs. 11, 12. 

 Bulimus (Petraeus) jerdoni, Pfeiffer, Malak. Blatt. ii, 1856, p. 154. 

 Euliminus (Cerastus) jerdoni, Nevill, Hand List, i, 1878, p. 132 ; 



Kobelt, Conch.-Cab'., Fam. Buliminidae, 1902, p. 893, pi. 127, 



figs. 17, 18. 



Nevill, Hand List, i, 1878, p. 133. 



