Palceozoic Bivalved Entomosfraca. 191 



Fig. 5. Smith Coll. (one) no. Slg. Benthall Edge, Iron- 

 bridge. 



Smith Coll. (one) no. 8. Near Much-Wenlock. 



2. Cy there'? Vinei, sp. no v. 

 (PL Vli. figs. la,lb,6a,5 b.) 



Length. Height. Thickness. 



p ,. (Fig. 5 : 20 11 9i 



Proportions :-^j.j|^ J ^ 18 9 6 



Measurements in lOOOths of an inch : — 



Fig. 5 ... 35 18 17 



Another (xiiig) 33 18 15 



Neat, small, ovate-oblong carapaces, with straight back and 

 gentle ventral convexity, especially at the hinder third. Ends 

 rounded, unequal. Edge view more or less compressed- 

 ovate. Fig. 5 h has much blunter ends to its contour than 

 fig. 1 b ; but the latter has been somewhat crushed. This 

 species has a form near to that of Cytherellhia [Bythocypris^) 

 tersa (Ann. & Mag. Nat. Hist. ser. 4, vol. iii. p. 217, pi. xiv. 

 fig. 3), but the latter has an arched back. 



Mr. Vine's name is connected with this species in recog- 

 nition of his enthusiastic labour in obtaining the many Ostra- 

 coda from the Benthall washings (see vol. xvii. p. 343). 



^ C Vine Coll. no. XIII2 (var.?) ") Bed no. 38, 



* P^^"" \ XIII3 (fig. 5) J Buildwas Beds, 



specnnens . ^ ^^^^^ ^^^^ j^_ Tick wood Beds. 



i Smith Coll. no. 49. Benthall Edge, near 



Two ) Ironbridge. 



specimens : j 0)22. Railway-cutting, side 



\ of Severn, Ironbridge. 



3. Cythere ? suhquadrata, sp. nov. 

 (PI. VII. figs. Qa,Qb, 14 a, 14 b.) 



Proportions:-! p-^." 



Length. Height. Thickness. 

 14 : 161- ly y 



6 : 15 9 6 



Carapace high and short, convex, subobiong, with rounded 

 unequal ends ; higher and thicker at the hinder third than in 

 front, where it is compressed. 



The two specimens figured difter a little in outline and 

 contour, but seem to be within the limits of one species. 

 They remind us of Cythere'? obtusa, J. & K. (Ann. & Mag. 



