454 SUCCINEIDjE. 



& Theobald, Conch. Ind. 1874, pi. 68, figs. 5, 6 ; Nevill, Hand 

 List, i, 1878, p. 212. 



Succinea (Tapada) crassiuscula, Pfeiffer & Clessin, Nomencl. Helic. 

 Viv. 1881, p. 412. 



Original description : " T. ovato-conica, solida, striata, punctis 

 impressis notata, vix nitidula, corneo-albida ; spira scalar! s, 

 papillata ; anfr. 3, penultimus perconvexis, ultimus inflatns, 

 rotundatus, J longitudinis aequans ; columella subcallosa, arcuatini 

 recedens ; apertura lata, ovalis, intus margaritacea ; perist. simplex, 

 obtusum, margine dextro regulariter arcuato. 



" Long. 9, diam. 7, alt. 4 mill. Apert. 6J mill, longa, 4^ lata." 

 (Pfeiffer.} 



Hob. India : Bundelkhund (Theobald) ; Calcutta and Port 

 Canning (Nevill) ; Salt Range and Kutch (Stoliczka). 



The species was originally published as S. crassinuclea, from a 

 Cuming label, but four years later Pfeiffer altered it to crassiuscula , 

 as communicated to him in a letter by Benson, and the latter name 

 has been adopted by every subsequent author dealing with the 

 species. 



The shell is of a delicate whitish corneous appearance and more 

 or less connects S. daucina with S. vitrea. I have seen several 

 specimens which exceed the type in diameter, one in the Cuming 

 collection and four, presented to the National collection by Hutton, 

 measuring 10 mm., while the Theobald collection contains shells 

 which even attain 11 and 12*5 mm. in diameter. On the other 

 hand, specimens presented by Colonel AVilmer, who collected them 

 at Fort William, Calcutta, although full-grown, only measure 

 6'5 mm. 



452. Succinea vitrea, Pfeiffer. 



Succinea vitrea, Pfeiffer, P. Z. S. 1854, p. 298 ; ibid., Mon. Helic. 

 Viv. iv, 1859, p. 810 ; Reeve, Conch. Icon, xviii, 1872, Succinea, 

 pi. 3, tig. 20; Hanley & Theobald, Conch. Ind. 1874, pi. 68, 

 tigs. 2, 3 ; Nevill, Hand List, i, 1878, p. 214 ; Smith, Fauna and 

 Geogr. Maldive & Laccadive Arch, i, part 2, 1902, p. 142; 

 Peile, Journ. Bombay Nat. Hist. Soc. xi, 1908, p. 131. 



Succinea (Tapada) vitrea, Pfeiffer & Clessin, Noinencl. Helic. 

 Viv. 1881, p. 412. 



Original description : " S. testa ovato-conica, tenuiuscula, con- 

 fertim plicato- striata, nitida, albo-hyalina ; spira conica, sub- 

 papillata ; anfr. 3 convexis, ultimo | longitudinis formante, inflato, 

 basi attenuate ; columella filosa, arcuata ; apertura parum obliqua, 

 incumbente, ovali, superne vix angulata ; perist. sirnplice, ruar- 

 ginibus callo opaco junctis, subsymmetricis. 



" Long. 12, lat. 8, alt. 5 mill." (Pfeiffer.) 



Hab. India: Calcutta (Bacon)- Fort William, Calcutta (Wil- 

 mer); Bombay Island (Peile). Andaman Islands, Fort William 

 ( Wilmer). Laccadive Archipelago (Stanley Gardiner Expedition). 



Mr. Smith considers this species " scarcely separable from 



