SUCCINEA. 453 



pi. 1, fig. 6; Ilanley & Theobald, Conch. Ind. 1874, pi. 68, 

 fip-s. 1, 4 ; Xevill, Hand List, i, 1878, p. 214. 



Succinea (Brachyspira) baconi, Pfeiffer & Clessin, Nomencl. Helic. 

 Viv. 1881, p. 410. 



Original description : " S . testa semiovato-acuminata, tenuissima, 

 longitudinaliter subundulato-plicata, pellucida, nitida, pallide 

 cornea ; spira parvula, submucronata ; anfract. 2 cum apiculo 

 punctiformi, penultimo convexo, ultimo | longitudinis formante, 

 basi subattenuato ; coluniella filosa, superne subplicata ; apertura 

 obliqua, subregulariter acuminato-ovali, non incumbente ; perist. 

 simplice, margine dextro antrorsum areuato. 



" Long. 15, lat. 10, alt. 6 mill." (Benson.) 



Hab. India : Calcutta (Bacon) South Canara (Beddome). 



Of this species I have seen two specimens in the Cuming 

 collection, bearing Pfeiffer' s own label. S. baconi is very fragile 

 and thin, whitish corneous, and may be regarded as intermediate 

 in character between S. semiserica and S. daucina, but some 

 specimens in the Blanford collection are somewhat amber coloured 

 and, although possessing 2^ whorls, only measure : length 14, 

 diam. 9 mm. In the Bedolome collection are some shells from 

 South Canara. 



450. Succinea daucina, Pfeiffer. 



Sucdnea daucina, Pfeiffer, P. Z. S. 1854, p. 298 ; ibid., Mon. Helic. 



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



pi. 3, tig. 19; Ilanley & Theobald, Conch. Ind. 1874, pi. 67, 



tig. 7 ; Nevill, Hand List, i, 1878, p. 212. 

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



Viv. 1881, p. 412. 



Original description : " S. testa ovato-conica, solidula, leviter 

 striatula, oleoso-micante, lutescenti-rubella ; spira conica, apice 

 subpapillata ; anfract. 3, penultimo convexo, ultimo f longi- 

 tudinis formante, basi parum attenuate ; columella filari, leviter 

 arcuata ; apertura obliqua, incumbente. acuminato-ovali, basi lata ; 

 perist. simplice, margin ibuj subsymmstricis. 



" Long. 9f , lat. 6, alt. 4| mill." (Pfeiffer.) 



Hab. India: Calcutta (Bacon) ; Port Canning (Nevill). 



The present species is readily distinguished from its nearest 

 allies by the slightly indexed outer margin of the peristome. In 

 the Cuming collection are four shells, labelled by Pfeiffer himself, 

 none of which, however, exceeds 9 mm. in diameter. The specimen 

 figured by Hanley and Theobald has been presented to the National 

 Collection by Mr. Harvey. 



451. Succinea crassinuclea, Pfeiffer. 



Succinea crassinuclea (Benson), Pfeiffer, Zeits. Malak. vi, 1849, 



p. 110. 

 Succinea crassiuscula, Pfeiffer, Mon. Helic. Viv. iii, 1853, p. 9 ; 



Reeve, Conch. Icon, xviii, 1872, Succinea, pi. 1, fig. 4 ; Hanley 



