46 CRETACEOUS ENTOMOSTRACA. 



2. Cytherella obovata, sp. nov. Plate III, figs. 46 and 47. 



Length "95 ; height '57 ; thickness '35 mm. 



Obovate, but straighter on the ventral than on the dorsal margin, and even 

 slightly incurved ventrally ; the anterior more rounded than the posterior moiety, 

 but not so thick. Edge view lanceolate ; end view oval. 



This carapace resembles that of G. ovata except in its being contracted in its 

 posterior moiety, having less fulness both of outline and of contour in that region, 

 and hence obovate instead of being ovate. Several published figures of Gytherellse 

 are more or less comparable with this form, but none exactly match it. G. nitida, 

 Brady, is perhaps the nearest, but the postero-ventral margin is too convex ; and 

 G. Isevis, Brady, is too high and too thick in the posterior region. G. Leopolitana, 

 Reuss (as figured in 1850), differs in its ventral outline and its edge view. 

 G. fabacea, Bornemann, is near it, but is not arched enough dorsally, and is too 

 thick behind. 



Locality. — Ghalh, Kent. ' . 



3. Cytherella Moensteri (Bomer). Plate III, figs. 63 — 67. 



CYTnEMNA MuENSTEEi, Romer. Neues Jahrb. f. Min., &c., 1838, p. 516, pi. vi, 



fig. 13. 



— PABALLELA, Bcuss. Vcrst. bohm. Kreidef., pt. 1, 1845, p. 16, pi. v, 



fig. 33. 

 Cttheee tettncata, Bosquet. Mem. Soe. Liege, vol. iv, 1847, p. 357, pi. i, 



figs. 2 a — e. 

 Cttheeina LiEvis, Williamson. Mem. Lit. Phil. Soc. Manchester, vol. viii, 1847, 



p. 79, fig. 80. 

 Cytherella teuncata, Jones. Monogr. Entom. Cret., 1849, p. 30, pi. vii, figs. 



25 a — e. 

 — MuENSTEEi, Bosquet. Mem. cour. Akad. Belg., vol. xxiv, 1852, p. 13, 



pi. i, figs. 2 a — d [the punctation is figured 

 very much too coarse]. 

 Cytheeina paeallela, Reuss. Haidiuger's Naturw. Abhandl., vol. iv, pt. 1, 1851, 



p. 47, p]. vi, fig. 1. 

 Cythebella Mtjensteei, Bosquet. Mem. Coram, geol. Neerl., vol. ii, 1854, p. 58, 



pi. viii, figs. 2 a — d. 



— PAEALLELA, Reuss. Deuksch. Akad. Wiss. Wien, vol. vii, 1854, p. 40 ; 



and Zeitsch. d. g. Ges., vol. vii, 1855, p. 18. 



— Muensteei, Jones. Monogr. Tert. Entom., 1856, p. 56, pi. v, figs. 



(12 ?), 13 ; Geol. Mag., 1870, pp. 76, 77. 



— — Williamson. Mem. Lit. Phil. Soc. Manch., ser. 3, vol. v, 



1872, p. 136. 



