Vol. 50] KH^TIC AND LIASSIC OSTRACODA OF BRITAIN. 163 



Specimens of this species in the Geological Society's Collection 

 came from the cream-coloured limestone with Naiadites, or ' Gypris- 

 bed,' at Westbury-on-Severn (see p. 157) ; and from a locality 

 at ' Bristol,' which, from Mr. Brodie's information, appears to bave 

 been on the Wells Road. 1 These are similar to Mr. Wilson's 

 limestones ' i ' and ' I ' at Pylle Hill, from which figs. 1 and 2 have 

 been taken. The shale ' m' also contains this species in abun- 

 dance. 



It occurs in a shale from Bedminster (p. 161), probably the 

 same as some Rhsetic shale wbich Mr. Wilson has found in a quarry 

 on Bedminster Down, 2 over a mile west of Pylle Hill. 



[It is present in the hard calcareous shale from the excavation 

 at Clifton (p. 162).— February 17th, 1894.] 



Also in a dark-grey, probably Rhaetic shale ' above the Insect- 

 limestone ' in the Wainlode section (P. B. Brodie). 



A limestone, similar to that of Pylle Hill, with D. liassica and 

 Naiadites, is in the Charles-Moore Collection, Bath Museum, from 

 Uphill, near Weston-super-Mare (see p. 160). 



1*. Darwintjla liassica (Brodie), var. major, nov. (PL IX. 

 fig. 2.) 



Length. Height. 



1 mm. *55 mm. 



The valve in this variety is much larger than what appears to be 

 the normal form ; the extremities are more unequal in size, and the 

 anterior is definitely smaller than the other end. (See fig. 16.) 



This variety occurs, in company with the smaller valves (but 

 rarely) in the light-blue shales of Pylle Hill (' m ', E. Wilson), in 

 that of Bedminster, and in the shale ' above the Insect-limestone ' 

 at Wainlode Cliff (Brodie). [Also in Mr. Cunnington's specimen 

 from Clifton.— Feb. 17th, 1894. J 



2. Darwintjla globosa (Duff). (PI. IX. figs. 3, 4 a, 4 b.) 



Cypris globosa, Duff, 'Sketch of the Geology of Moray,' 1842, p. 16 

 and p. 19. 



Gandona? globosa, Jones, Monogr. Foss. Estherige, Pal. Soc. 

 Appendix, 1862, pp. 126, 127, pi. v. figs. 23 and 24. 



Length. Height. 



Fig. 3 -95 -45 mm. 



Fig. 4 a "95 -4 mm. 



" Carapace subcylindrical, smooth; carapace-valves oblong, straight 

 on the ventral edge, slightly arched on the dorsal, rounded at the 

 ends, but obliquely at the antero-dorsal region, so that the fore end 

 is narrower than the other." The lucid spots (muscle-marks) are 

 not so much like those of Gandoaa Forbesii (Monogr. Tertiary 



1 Mr. Wilson tells me that the exposure here may have been the old Py lie- 

 Hill section, abutting on that road. 

 - Proc. Geol. Assoc, vol. xiii. (1893) p. 129. 



