108 Prof. T. Riqjert Jones — Fossil B waived Entomostraca. 



giving full credit to differences in valve-structure among these fossil 

 Ostracods, whose recent representatives have their specific characters 

 so largely marked in their limbs and soft parts, must always be borne 

 in mind. 



§ 4. Description of the species from Shotover. 



1. Candona Phillipsiana, sp. nov. Plate III. Fig. 3. Internal 

 cast of a left valve ; magnified 20 diameters. 



One relatively large, brown, shining, internal cast on the piece of 

 fossiliferous sandstone from the Shotover Ironsand (see above, p. 103) 

 indicates a right valve very similar to that of Candona Candida ' 

 (Miiller) ; subreniform or ovate-trigonal ; thick and high in the 

 posterior third ; sinuate on the ventral, and obliquely convex on the 

 dorsal edge ; semicircular in front, and sloping boldly and obliquely, 

 with a gentle curve, behind. The cast shows by slight marginal 

 ledges, anterior and posterior, that the edge of the valve was 

 widened by an inner free lamina, as in Candona Candida, from 

 which, indeed, this species is distinguishable chiefly by its greater 

 height and blunter posterior margin. 



It differs in form from the somewhat similar marine CytJierideis 

 nobilis, Brady,^ in its more tapering anterior third, less sinuous 

 ventral margin, and far more oblique posterior outline. 



Associating the name of the late Prof. John Phillips with this 

 rare species, I dedicate it to the memory of that eminent geologist, 

 one of the most earnest workers in the Shotover formation. Not 

 long before his death he was much gratified by the information that 

 real Cypridce had been found in these Ironstones. 



2. Cypridea verrucosa, et var. crassa, sp. et var. nov. Plate III. 

 Figs. 4-7. 



Valves oblong ; convexity greatest at the posterior third. Surface 

 pitted or coarsely reticulate, and bearing numerous tubercles, more 

 particularly on the anterior and posterior thirds. Front edge of 

 each valve semicircular ; upper and lower edges nearly parallel, 

 except in the advanced stage (or variety crassa, Fig. 4), in which the 

 dorsal border is convex. Posterior margin rounded with elliptical 

 curvature. Antero-ventral region either marked with a slight in- 

 denture and notch (Figs. 6 and 7), or strongly beaked (Fig. 5). In 

 Fig. 4 (an imperfect and partly obscured individual), the two most 

 forward tubercles to the left of the reader really belong to the 

 massive lobe or beak, better seen in other fragments, and clearly 

 but less strongly developed in Fig. 5. The gradation between these 

 specimens seems to be complete. 



Figs. 5, 6, and 7 approach very near to Cythere (?) granulosa (Sow.) ; 

 but they show the special indenture or notch. Fig. 4 somewhat 

 resembles Cythere (?) tuberculata (Sow.), but differs notably in shape 

 and arrangement of tubercles. 



1 T. Eupert Jones, Monogr. Tert. Entom., Pal. Soc, 1856, p. 19, pi. 1, figs. 

 5 and 8 : G. S. Brady, Monogr. Rec. Brit. Entom., Trans. Linn. Soc, 1868, 

 p. 383, pi. 25, figs. 1-9 : Brady, Crosskey, and Robertson, Monogr. Brit. Post-Tert. 

 Entom., Pal. Soc.. 1874, p. 135, pi. 2, figs. 29, 30. 



2 Trans. Zool. Soc. vol. v. (1866), p. 368, pi. 58, fig. 9. 



