SUCCINEA. 447 



vagina, and between them lies the right upper tentacle, which 

 winds around the penis and next proceeds backwards between 

 the latter and the vagina. The outlet of the penis is at the side 

 but in front of that of the vagina. 



" In the distinct outlet of the excretory ducts the generative 

 organs in Succinea present a condition resembling Limna-a. The 

 resemblance is nevertheless slight, to. which no weight is to be 

 attached in view of the undoubted close relationship between 

 Succinea and the HF.LiciD.ii;. In this respect I feel bound to 

 follow Semper, but I am unable to agree with his opinion that 

 the quadrate plate of the jaw found in Elasmognatha also occurs, 

 only less strongly chitinized, in the Helicid.Ti." {Iherimj.) 



441. Succinea indica, Pfeiffer. 



Succinea indica, Pfeiffer, P. Z. S. 1840, p. 1:33 ; ibid., Mou. lielic. 

 Viv. ill, 1853, p. 8; ibid., Conch.-Cab., Succinen, 1855, p. 45, 

 pi. 4, figs. 39, 40 ; Keeve, Couch. Icon, xviii, 1872, Succinea, 

 pi. 1, iig. 2; Ilanlev & Theobald, Conch. lud. 1874, pi. 67, 

 tigs. 1, 4; Nevill, llaiid List, i, 1878, p. 212.^ 



Siccci7iea ( Tapaila) indica, Pfeiffer, & Clessiu, Nomencl. Ilelic. Viv. 

 188], p. 412. 



Onghml description : — " S. testa depresse oblonga, tenuissima, 

 longitudinaliter plicatula, pellucida, pallide cornea ; spira brevi, 

 obtusiuscula ; anfractibus vix 3, penultimo convexiusculo, ultimo 

 *■ longitudinis sequante ; columella substricte fere ad basin rece- 

 dente, superne calloso-marginata ; apertura axi fere parallela, basi 

 recedente, ovali-oblonga, angulata, intus nitidissima ; peristomate 

 acuto, margine dextro leviter arcuato. 



''Long. 17, diam. 7t, alt. 6 mill.; ap, 12 mill, longa, infra 

 medium 7 lata." (Pfeiffer.) 



Hah. InJia: Bheemtal (i^fti^er) ; Srinuggar (/SioZiW.-rt) ; Hima- 

 lavas {Mus. Cum.) ; Kashmir {Thomson). 



A thin and transparent species with a slender spire. Some 

 shells in the British Museum from the type locality are rather 

 small and whitish corneous, while four, labelled Himalayas in the 

 Churning collection, are amber coloured. Four unnamed specimens 

 from Kashmir, in the British Museum, presented by Dr. J. 

 Thomson, I also refer to /S. indica, but they only possess 2| 

 whorls and measure 11 mm. in diameter, while several shells 

 collected by Stoliczka in the same country form part of the 

 Beddome collection in the British Museum ; one of these, 

 possessing 2| whorls, measures: length 20, diam. 9 mm. 



Jickeli records the species from tlie neighbourhood of the 

 Mahmudi Canal, near Alexandria*, stating that his specimens 

 differ from the Indian shell by their firmer texture, darker colour, 

 and more slender form. I have not seen the Egyptian shells, but 

 to judge from the figures they appear quite distinct, not only 



* Nova Acta K. Leop.-Carol. Akad. xxxvii. no. 1, 1874, p. 167. pi. G, 

 fig. 11. 



