428 FERUSSACIDjE. 



Hob. India: Cuttack, prov. Orissa, and upper valley of the 

 Nerbudda (Theobald). 



Allied to G. gemma, but more cylindrical, with a convex spire^ 

 A specimen in the Theobald collection, from the Nerbudda 

 Valley, with six whorls, measures 5*5x2-75 mm. Another shell 

 from Malabar, having 6| whorls, has the following dimensions L 

 length 7 mm., diameter 3 mm. 



417. Glessula gemma, Reeve. 



Achatina gemma (Benson), Reeve, Conch. Icon, v, 1850, Achatina, 



pi. 22, fig. 123 ; Pfeiffer, Mon. Helic. Viv. iii, 1853, p. 496 ; 



ibid., Conch.-Cab.. Bulimus, 1860, p. 314, pi. 25, figs. 24, 25 ; 



Benson, A. M. N. H. ser. 3, v, 1860, p. 464 (large var.). 

 Oleacina (Electro} gemma, Adams, Gen. Rec. Moll, ii, 1855, 



p. 105. 

 Achatina (Electro] gemma, Pfeiffer, Malak. Blatt. ii, 1856, p. 168- 



Hanley & Theobald, Conch. Ind. 1870, pi. 36, fig. 7. 

 Cionella (Glessula) gemma, von Martens, Die Heliceen, ed. 2, I860,. 



p. 254. 



Stenogyra (Glessula) gemma, Nevill, Hand List, i, 1878, p. 170. 

 Glessula gemma, Pfeiffer & Clessin, Nomencl. Helic. Viv r . 1881, 



p. 331 ; Kobelt, Illustr. Conchyl. Buch, ii, 1878, p. 276, pi. 85, 



fig. 7; Beddome, Proc. Malac. Soc. London, vii, 1906, p. 169; 



Pilsbry, Man, Conch, ser. 2, xx, 1909, p. 97, pi. 13, figs. 1, 3. 



Original description : " Shell oblong-conical, rather solid, 

 whorls six in number, rounded, smooth, col urn ell u arched,, 

 abbreviated, aperture nearly round ; purple-black, shining." 

 (Reeve.) 



" Of a much darker purple-black colour than any other of the- 

 Indiaii species, and of shorter growth, with a shining, polished 

 surface." (Reeve.) 



Hob. India : Borrackpore (Benson) ; Chandpore (Bacon) - 

 Jessore District, Chandbally, and Moisraka (Nevill)', Rajmahal 

 (Raban) ; Chandernagore ( Mainwaring) ; Garo Hills (Godwin- 

 Austen) ; Malabar plains and Bey pur (Beddome). Burma : 

 Chittagong (Uaban) ; Arakan (Kurz). 



The following measurements are supplied by Pfeiffer from 

 specimens in his own collection (Mon. Helic. Viv. iii, p. 496): 

 "Long. 8J, diam. 4 mill., ap. 3 mill, longa, 2 lata," while Benson 

 (A. M. N. H. ser. 3, v, p. 464) indicates a large variety, 

 8x3| mm. 



It is allied to G. scrutillus, but that species is more cylindrical 

 with a convex spire. A specimen in the British Museum of 5| 

 whorls measures 6 mm. in length. 



