266 ENID^. 



Bulimina (Cerastus) jerdoni, Pfeiffer & Clessin, Nomencl. Helic. 



Viv. 1881, p. 286. 

 Cerastus jerdoni, Kobelt & Mollendortf, Naclir. Deuts. Malak. Ges. 



1903, p. 40. 



Original description: — "Shell somewhat shortly ovate, largely 

 umbilicated, spire rather shoi't, acuminated, whorls six in number, 

 swollen, rounded, columella broadly reflected, aperture nearly 

 orbicular, lip expanded, scarcely reflected ; dirty olive-brown." 

 (^Reeve.) 



Long. 18, diam. ll'o mill, {ex icon.). 



Bah. India : Deccan (Benson) ; Poona (Blanforcl). 



A shell from Ahmednuggar in the Benson collection, kindly sent 

 for inspection by Dr. L. Don caster, agrees with Eeeve's flgure, 

 except in being paler in colour, which may be due to fading, and 

 the outer margin of the peristome being narrower and damaged, 

 probably as the result of rough handling. I am consequently 

 disposed to regard this specimen as the type. The form figured 

 by Hanley and Theobald is larger and with a less convex spire, 

 and I refer this to the var. redfieldi, Pfeiffer. 



The species differs from C. densus, Pfeiffer, in being of shorter 

 and stouter build, of thinner texture, more finely, not plicately, 

 striated, and in being covered with rather close, wavy spirals. 



Var. redfieldi, Pfeiffer. 



Bulimus redfieldi^ Pfeiffer, Malak. Bliitt. i, 1854, p. 66. 



Bulimus jerdoni, var. redfieldi, Pfeiffer, Moo. Helic. Viv. iv, 1859, 



p. 410.' 

 Btdimus jerdoni, Hanlev & Theobald, Conch. Ind. 1870, pi. 21, 



fig-- 7. ■ 

 Bulimina (Cerastus) 'jerdoni, var. redfieldi, Pfeiffer & Clessin, 



Nomencl. Helic. Viv. 1881, p. 286. 



Original description : — " T. profunde et compresse umbilicata, 

 ovato-conica, tenuis, oblique coufertim striata, pellucida, parum 

 nitens, cereo-albida ; spira conica, apice obtusa ; anfr, 6 convexi, 

 ultimus spiram aequans, infra suturam subturgidus, juxta umbiHcum 

 compressus ; columella fere verticalis, medio introrsum subplicata; 

 apertura obliqua, truncato-ovalis ; perist. tenue, marginibus con- 

 vergentibus, dextro perarcuato, expanso, subdilatato, columellari 

 lato, patente. 



" Long. 20, diam. 11 mill. Ap. 10 mill, longa, intus 5k lata." 

 {Pfeiffer.) 



Hah. India : Ahmednuggar (Redfield) ; Poona (Beddome). 



Described originally as a distinct species, evidently before he 

 had seen C. jerdoni, Pfeiffer subsequently reduced it to varietal 

 rank. The shell figured by Hanley and Theobald as jerdoni I 

 refer to this variety. Three specimens from Ahmednuggar in the 

 Cuming collection, accompanied by a label bearing the legend 

 " B. jerdoni " in Pfeiffer's handwriting, also agree with the de- 

 scription and dimensions of redfieldi. The Beddome collection 



