544 PROF. T. R. JONES ON SOME DEVONIAN AND 



these forms, in their two medio-dorsal knobs, usurping the place of 

 the sulcus on each valve, show a departure from the simple Prhnitia, 

 and bear evidence of the persistency of their peculiar bitubercular 

 feature, it is allowable to give them a generic standing ; and I name 

 the genus Uleichia, after Mr. E. 0. Ulrich, who has largely col- 

 lected the Palaeozoic Ostracoda of North America, and has figured 

 and described several important species. 



[In his Memoir on the Pauna of the Graptolite-rock &c., ' Neue 

 Lausitzische Magazin,* Gorlitz, vol. liv. 1878, pp. 85 & 109, pi. v. 

 fig. 11, K. Haupt gives a small figure of a valve (about 1*5 mm. long), 

 apparently belonging to this genus. He refers to it as " Beyrichia, 

 sp." 



A somewhat similar form of bituberculate valve occurs in the 

 Lower-Coalmeasure shales of Nova Scotia (' Geol. Mag.' 1884, 

 p. 358. pi. xii. fig. 7) ; but this is the young form of Beyrichia 

 nova-scotica, J. & K., as intimated at p. 358, and proved by its free 

 association with mature forms in a series collected by Dr. Hinde.] 



13. Uleichia Cofeadi, gen. et sp. nov. (Woodcut, fig. 2.) 



Length -8 mm.; height '46 mm. 



A small, left valve, suboblong, straight on the back, obliquely 

 curved below, rounded at the ends, the posterior higher and fuller 

 than the anterior. Two largish prominent knobs, oval in section 

 and obliquely peaked (much too neatly oval in the figure), divide 

 the dorsal region in three nearly equal portions ; the front tubercle 

 is smaller than the other. The surface of the valve is faintly 

 reticulated, and has along the free borders a neat marginal ridge. 



Fig. 2. — Uhichia Conradi, gen. et sp. nov. (Magn. 40 diam.) 

 Prom Thedford, Canada. Coll. Dr. Hinde, E.G.S. 



This small bituberculate and punctate valve is near P. Morgmii, 

 J. (Quart. Journ. Geol. Soc, February), p. 5, pi. iv. fig. 6; but it 

 is more oblong, margined with a distinct raised rim, and has the 

 two tubercles (which take the place of the sulcus of Primitia) 

 obliquely peaked, and nearly equal in size. This species I propose 

 to name Coneadi, in memory of T. A. Conrad, who was one of 

 thp first to describe the fossil Ostracoda of North America. 



