On Ostracoda, etc., from the Devonian of Germany. 331 



micestral to one of the most abundant Carboniferous Ostracods, 

 and hitherto restricted to that and the succeeding Permian forma- 

 tions. The Paffrath specimens show some likeness also to Bairdia 

 'pleheia, which ranges into the Permian, and is a broader or higher 

 form. B. curta has also been recorded * by McCoy from the 

 Carboniferous of Dun vegan, Xew South Wales. 



Ditnensions. — Length, 1 mm.; height, 0*4 mm. 



Occurrence. — JMiddle Devonian ; Paffrath. Several specimens. 



Range. — Middle Devonian to Permian. 



Family Cytherid^. 

 Genus Cytlicre Miiller. 



Cythere intermedia Mnnster. (PL VIII, fig. 13a, b.) 



€y there intermedia Mlinster, 1830, Neues Jahrb. ftir. Min., p. 65, No. 22. 



C. subreniformis Kirkby, 1859, Trans. Tyneside Nat. Field Club, vol. iv. 

 p. 154, pi. xi, fig. 23. 



C intermedia Miinster, Jones and Kirkby, 1865, Ann. Mag. Nat. Hist, ser. 3, 

 vol. XV. p. 409, pi. XX, figs. 9a-e. 



Observations. — The formerly known range of this species was 

 Carboniferous to Permian. The specimen here figured is generally 

 typical of the species, having an elongate-ovate outline seen 

 laterally, broader anteriorly, and with moderately compressed sides. 



Occurrence. — Middle Devonian [Stringocephalus Limestone) ; 

 Paffrath. 



Range. — Middle Devonian to Permian. 



Genus Bythocythere G. 0. Sars. 

 Bytliocythere eifeliensis sp. n. (PI. VIII, figs. 14a, b.) 



Descriytion. — Carapace seen from the side, subrlinmboidal, 

 oblique. Hinge-line straight ; ventral border gently concave, 

 sloping away to the posterior. Anterior, obliquely truncately 

 rounded to the dorsal margin ; posterior, acuminate at the dorsal 

 angle, the margin being fringed with denticles. Carapace com- 

 pressed ovate, with a depressed marginal flange. Surface distinctly 

 pitted or areolate. 



Dimensions. — Length, 1 mm. ; height, • 4 mm. ; thickness of 

 carapace, 0*33 mm. 



* Ann. Mag. Nat. Hist., vol. xx. 1847, p. 229. 



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