UNTO.— Plate XXIX. 



compressS, lavigatd vet teniii concentrici slriatd, latere 

 aniico brevissimo, iitleimato-rotiindalo, poslico laliore, 

 de.inde decUve acuminato-rolundato, obscure angnlato ; 

 nigricante-olivaced. 



Menzies' Unio. Shell obliquely ovate, ralliei' thin, eoiii- 

 pressed, smooth, or finely coneentrically striateil, an- 

 terior side very short, atteniiately rounded, posterior 

 side broader, then slopingly acuminately rounded, 

 obscurely-aisled, blaekish-nlive. 



GiiAY, MS. ill Mus. Ill-it. 



Hnb. New Zealand. 



A ratlier smooth, 

 isiht substance. 



compressed species of rather 



Species lo.-i. (Mus. Cuming.) 



Unio D£.yBE.«. ('n. ledd eluvtjato-obhngu, i/ibboxn, la- 

 tere niitico rotiindatn, jinslieo sulincumimtlo-pruducii). 

 (ibscKri anyulalo , fidro-oliraced, viridi tinrtd el ra- 

 diiitd. 



The Demhea Unio. Shell dongately oblong, gibl.ous, 

 anterior side rounded, posterior rather aeuniinateiy 

 produced, obscurely angled, fulvous-olive, tinged and 

 rayed with gn-en. 



ROSSMASSLER, MS. ill Mus. Chiniliig. 



Hab. Dembea, Abyssinia. 



This comes very near to the European U. piclorum, and 



onlv a variety of tl 



species 



