466 



STJCCINEID^E. 



& Theobald, Conch. Ind. 1874, pi. 81, figs. 5, 6 ; Tryon, Struct. 

 Syst. Conch, iii, 1884, p. 98, pi. 103, fig-. 4; Nevill, Hand List, 

 i, 1878, p. 215 ; Tate in Woodward, Man. Moll. 1890, appendix, 

 p. 43; Cooke, Cambridge Nat. Hist, iii, 1895, p. 302, fig. 202 c. 

 Valenciennesia theobaldi, Fischer, Journ. Conchyl. vii, 1858, p. 319. 



Original description : " Testa (supina) cornucopiam siinulante, 

 tenui, concentrice rugosa, purpureo-fusca, dorso ad latus sinistruin 

 compressiusculo, coata carinaeformi subspirali, sulco postico ad- 

 jecto, ab apice usque ad marginera dextrum aperturae descendente ; 

 apice obtuso; apertura ovali, intus purpureo-lutescente, nitida, 

 peristomate acuto. 



" Long. 10, diam. dorsali 4| milL ; apert. 8 mill, longa, 6 lata." 

 ( Benson.) 



Hal. India: Girnar Hills, Peninsula Guzerat (Theobald). 



" This singular shell, sent to me by Mr. "W. Theobald, Jr., as a 

 cap- shaped Succine a, was found by him in abundance on the central 

 peak of Mount Girnar in Kattiwar, on the peninsula which 

 separates the Gulfs of Cutch and Cambay. He states that these 

 hills form an amphitheatre, with a central crateriform clump, the 

 peak rising to an altitude of 2500 feet. 



Fig. 145. Camptonyx theobaldi (all enlarged). 

 (Copied from J. A. S. B.) 



" A piece of the weathered rock forwarded by him contains in a 

 space of 2 inches square twenty-six young individuals, adhering 

 most tenaciously to the surface like limpets or Ancyli." (Benson.) 



Benson thought it probable " that Camptonyx holds an inter- 

 mediate place between Testacella, Plectrophorus, and Succinea, and 

 that it bears the same relation to the latter that Ancylus does 

 (through the intermediate Indian genus Camptoceras) to Lymncea. 



" The external rib and furrow on the shell have a corresponding 

 depression and ridge internally, but they are less strongly marked. 

 In the animal the sole is oblong, of a pale colour, transversely 



