CEEASTUS. 269 



number, convex, obliquely striated, columella broad, vertical, 

 aperture small, rounded, lip thin; dull horny." (Reeve.) 



Long. 11, diam. 6 mm. (ex icon.). 



Nab. India : Simla (Benson) ; Chinab Valley, Kashmir (var. 

 pusillus, Theobald). Turkestan : Hills near Schachimardan (var. 

 minor, Fedtschenko). 



Theobald records the finding in Kashmir of a single specimen 

 of what seemed to him a variety of segregatus, but it had an ab- 

 normal look about it. It measured 11*2x5 mm. and had the 

 ordinary horny appearance of ccelebs and its allies. A smaller 

 form, which he names var. pusillus, he also considered to pertain 

 to this species and was far from rare in the Chinab Valley above 

 6000 feet. It only measured 9 x 3'8 mm. Pfeiffer records the 

 following measurements from shells in the Benson collection : 

 Long. 13, diam. 7 mm. Ap. 5 mm. longa, 8-5 lata. 



I have not seen specimens, and the type appears to be lost. 



239. Cerastus densus, Pfeiffer. 



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

 Bulimus densus, Pfeiffer, Mon. Helic. Viv. iv, 1859, p. 424 : ibid., 



Novit. Conch, ser. 1, iii, 1868, p. 377, pi. 87, figs. 25, 26; 



Hanley & Theobald, Conch. Ind. 1874, pi. 79, fig. 6. 

 Buliminus ( Cerastus} densus, Nevill, Hand List, i, 1878, p. 286 ; 



Kobelt, Conch.-Cab., Fam. Buliminidae, 1901, p. 686, pi. 103, 



fi* 18. 

 Bulimina (Cerastus) densa, Pfeiffer & Clessin,Nomencl. Helic. Viv. 



1881, p. 286. 

 Cerastus densus, Kobelt & Mollendorff, Nachr. Deuts. Malak. Ges. 



1903, p. 40. 



Original description : " T. profunde rimata, subperforata, ovato- 

 conica, solidula, densecostulato-striata, vix nitidula, pallide carnea; 

 spira conica, obtusiuscula ; sutura obsolete marginata ; anfr. 6, 

 convexiusculi, ultimus spira vix brevior, basi compressus ; colu- 

 mella leviter arcuata ; apertura parum obliqua, elliptico-ovalis ; 

 perist. albo-labiatum, marginibus conniventibus, dextro arcuato, 

 expanse, columellari late patente. 



"Long. 20, diam. 10 mill. Ap. c. perist. 10 mill, longa, 7 

 lata." (Pfeiffer.) 



Hab. India : Malabar (FairbanJc) Ahmednuggar (Stanford) ; 

 Poona (Stoliczka). 



Pfeifi ? er indicates a var. (3 " elongatus, basi subai?gulatus ; long. 

 24j, diam. 10 mill." 



The Beddome collection contains five specimens, from Ahmed- 

 nuggar, which were labelled jerdoni, but which, without hesitation, 

 I refer to densus. 



C. densus differs from (7. jerdoni in having a more attenuated 

 spire, the whorls increase less rapidly, and the lip, while more 

 thickened, is less reflexed. The sculpture is also different, the 

 transverse striae being a trifle coarser and more regularly spaced, 



