CAMPTOCERAS. 



401 



being in the British Museum. 1 have been able to subject them to 

 a careful scrutiny, and I must admit a remarkable resemblance 

 between the two Indian species — C. terehra and C. austeni — and 

 the British fossil form. Whether this is simply a case of con- 

 vergence or actual attinity can of course never be determined. In 

 spite of the weight of opinion — that of Dr. Henry Woodward as 

 well as Godwin-Austin s — in favour of the latter, I am inclined 

 to attribute it to the former. 



459. Camptoceras terebra, Benson. 



Camptoceras terehra, Benson, Calcutta Journ. Nat. Hist, iii, 1843, 

 p. 465 ; ibid., A. M. N. H. ser. 2, xv, 1855, p. 10, text-tig. ; 

 Adams, Gen. Eec. Moll, ii, 1855, p. 258, pi. 84, fig. 1; Chenii, 

 Man. Conchyl. i, 1860, p. 481, fig. 3544 ; II. F. Blauford, J. A. 

 8. B. xl, 1871, pp. .39, 40, pi. 2, Hg. 1; Hanley & Theobald, 

 Conch. Ind. 1876, pi. 158, figs. 1, 2; Godwin-Austeu, Quiirt. 

 Journ. Geol. Soc. Loudon, xxxviii, 1882, pi. 5, fig. 8 ; Fischer, 

 Man. Conchyl. 1883, p. 511 : Trvon, Struct. Svst. Conch, iii, 

 1884, p. 104, pi. 100, fig. 35; Cooke, Cambridge "Nat. Hist, iii, 

 1895, p. 302, fig. 202 B. 



Original description : — " Testa diaphana, elongata, anfractibus 

 tribus compressis, biangulatis, transverse striolatis, lineis longi- 

 tudinalibus depressis decussatis. Animali fuscato, versus spiram 

 rubescente." (Benson.) 



1^ /a 



Fig. 142. — Camjrioceras terehra. 

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



This short description was subsequently amended bv Benson ii: 

 1855, in the ' Annals and Magazine of Natural History,* as 

 follows : — " Testa elongato-elliptica, hyalina vel albido-cornea, 

 lineis spiralibus exiguis, vix elevatis, striis obliquis confertissime 



