PLATE XXVIII. 



Fig. 1 a. — DlfJnjrocaris testndinea, Scouler. A jDerfect right- ^ 



Neilson Collection, 



X 2i 



(Page 151. 



X 15. 



The hinder portion of a right valve. 

 East Kilbride. (Page 151.) 

 Posterior fragment of a left- 



■ (Page 152.) 



hand valve, with its dorsal crest, 

 marked D. East Kilbride. 



Fig. 1 J). — Part of the dorsal crest. 



Fig. 2. — D. testndinea, Scouler. 

 X 2\. Neilson Collection, marked C. 



Fig. 3«. — D. testndinea, Scouler. 

 hand valve. X 3. Neilson Collection, marked E. East Kilbride. 



Fig. 3 h. — Ornament of the mesolateral ridge. X 30. 



Fig. 4. — D. testndinea, Scouler. Left valve, deformed by pressure. X 2^. 

 Mus. Geol. Sui'v. Scotl., F f^, No. 10. Lickprivick, two miles south-west of 

 East Kilbride. (Page 152.) 



Fig. 5 a. — ]). testndinea, Scouler. Natiiral impression of the ^ 

 outside of the two valves of an open carapace, together with a part 

 of the inturned ventral edge. Mus. Sc. Art Edin., No. 10. East 

 Kilbride. 



Fig. 5 h. — Part of the ornament of the valve as seen in the 

 impression near the ventral margin, and the straight-lined sculpture 

 of the inturned edge. X 10. 



Fig. 5c. — Part of the ornament of the valve (impei'fect), giving' 

 casts of small pits, x 50. 



(Page 152.) 



