268 JSSJDM. 



separated by the shorter, more compressed spire, and from 

 C. distans by the shorter spire, the broader base, and the coarser 

 and more distant ribs, while, on the other hand, it agrees with 

 C. densus in having the columellar margin of the peristome broadly 

 and triangularly dilated, forming a distinct angle with the basal 

 margin. 



I here figure a shell (fig. 99) in the British Museum from 

 Sholapur, Central India, received from Arthur A. West, which 

 has a more elongated spire than typical moussonianus, measuring 

 18xll'5 mm. and somewhat approaches C. distans in shape, 

 while fig. 100 represents another specimen in the British 

 Museum, labelled " India " only ; the latter approximates closely 

 to Petit's original figure, except in being a trifle smaller, measuring 

 15-5 x 10'5 mm. 



Fig. 100. Cerastus moussonianus. Shell |, sculpture f . 



Three specimens in the Cuming collection, collected by Fairbank 

 at Ahmednuggar, are labelled moussonianus, Pfeiffer ; they are 

 larger than the type, being 18 mm. long. 



238. Cerastus segregatus, Reeve. 



Bulimm segregatus (Bensoii), Reeve, Conch. Icon, v, 1849, Bulimus, 



pi. 79, fig. 587; Pfeiffer, Mon. Helic. Viv. iii, 1853, p. 440 ; 



ibid., Conch.-Cab., Bulimus, 1853, p. 77, pi. 21, figs. 8, 9 ; Hanley 



& Theobald, Conch. Ind. 1874, pi. 80, fig. 10. 

 Bulimus (Napaeus) segregatus, Pfeiffer, Malak. Blatt. ii, 1856. 



p. 153. 

 Bulimimis segregatus, var. minor, von Martens, Imp. Obsh. Lyubi. 



Estest. Antrop. Etnoghr. xi, part i, 1874, p. 21, pi. 2, fig. 16. 

 Napceus segregatus, Theobald, J. A. S. B. xlvii, 1878, p. 145. 

 Bulimina (Pachnodtts) segregata, Pfeifter & Clessin, Nomencl. 



Helic. Viv. 1881, p. 284. 

 Buliminus segregatus, Ancey, Bull. Soc. Malac. France, iii, 1886, 



p. 46; Westerlund, Fauna Palaarct. Binnenconchyl. iii, 1887, 



p. 72 ; ibid., Katal. Palaarct. Binnenconch. 1890, p. 92 ; ibid., 



Syn. Moll. Extramar. Reg. Palsearct. i, 1897, p. 11. 

 Buliminus (Chondrulopsis) segregatus, Westerlund, Fauna Palaarct. 



iii, 1887, p. 72. 

 Buliminus (Ena ?) segregatus, Kobelt, Conch.-Cab., Fam. Buli- 



minidae, 1901, p. 687, pi. 103, fig. 20, corrected to (Subzebrinus) 



on page 1007 (1902). 



Original description : " Shell ovately conical, somewhat pyra- 

 midal, rather swollen at the base, umbilicated, whorls seven in 



