CAMPTOCERAS. 461 



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

 a careful scrutiny, and I must admit a remarkable resemblance 

 between the two Indian species G. terebra and O. austeni and 

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

 vergence or actual affinity 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 terebra, Benson, Calcutta Journ. Nat. Hist. iii ; 1843, 

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

 Adams, Gen. Rec. Moll, ii, 1855, p. 258, pi. 84, fig. 1 ; Chenu, 

 Man. Oonchyl. i, 1860, p. 481, fig. 3544 ; H. F. Blanford, J. A. 

 S. B. xl, 1871, pp. 39, 40, pi. 2, fig. 1 ; Hanley & Theobald, 

 Conch. Ind. 1876, pi. 158, figs. 1, 2; Godwin-Austen, Quart. 

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

 Man. Conchyl. ]883, p. 611 ; Tryon, Struct. Syst. Conch, iii, 

 1884, p. 104, pi. 100, fig. 35; Coek'e, 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.) 



* lo. 



Fig. 142. Camptoceras terebra. 

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



This short description was subsequently amended by Benson in 

 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 



