GUDE: NEW VARIETY OF ISOMERIA SUBCASTANEA, PFR. 



145 



Carocolla glohosa.^ The specific name having already been employed 

 by Sowerby for a fossil species of Helix," Pfeiffer substituted the 

 name suhrastanea '^ for it. On grounds of strict priority, Broderip's 

 name has precedence, glohosa not having been employed previously 

 in the genus Isomeria, but I do not think it advisable to consign so 

 well-known a name as subcastanea to the limbo of synonymy. 



3- 4- 



Figs. I and 2. — Isomeria subcastanea v. kobeltiana, n. var. 

 Figs. 3 and 4. — Isomeria subcastanea, type. 



For comparison of the variety with the type, I give illustrations of 

 one of several specimens of /. subcastanea from Paramba, Ecuador 

 (3500 ft.), received from Mr. Rosenberg (Figs. 3, 4). These speci- 

 mens agree with the type shells which are in the British Museum. 

 The one figured measures diam. maj. 39, min. 34'5, alt. 20 mm. 

 The largest of the type specimens in the Museum measures 43 mm. 

 in diameter; but I have seen, in the possession of Messrs. Sowerby 



I Proc. Zool. Soc, 1S32, p. 30. 



3 Symb. Hist. Helic, 1842, ii, p. 103 



2 Min. Conch., ii, f. 170. 



