388 Prof. T. Rupert Jones—Fossil Ostracoda from U. States. 
IV. Canpona, Baird, 1845. 
5. CANDONA SUBRENIFORMIS, sp. nov. Pl. XV. Fig. 14a, b. 
Length, 1-2, height ‘6, thickness -5 mm. 
This approaches the female form of Candona Kingsleii, Brady and 
Robertson (see Trans. R. Dublin Soe. ser. 2, vol. iv. 1889, p. 102, 
pl. ix. figs. 19, 20), in shape; but it is relatively fuller in the 
posterior third. 
From the Montana Formation ; Coalville, Utah. 
6. CANDONA sUBovaTa, sp. nov. Pl. XV. Figs. 16a, 6. 
Length 1-2, height -65, thickness ‘65 mm. 
Although subovate, almost subreniform, and with a low front, its 
lateral aspect is too long and narrow in proportion, and its edge 
view too thick for Cypris incongruens, Ramdohr,* nor has it the slight, 
flattened margin of that form. 
So also it is not unlike Cypris? Cambrica (female), Brady and 
Robertson (Ann. Mag. N.H. ser. 4, vol. ix. 1872, p. 55, pl. ii, figs. 
3, 4), except that it is fuller at the middle and posterior thirds, and 
more convex at the sides, so that in the broadly-lanceolate edge 
view the anterlor extremity is not so sharp, and the posterior is 
quite blunt. 
Among the figures of Candona candida, male and female, and its 
varieties, shown in the Trans. R. Dublin Soc. 1889, pl. x. figs. 14-23, 
figs. 18 and 19 (female) are somewhat like our fig. 16, but rather 
less plump, not so convex on the back, and too sharp at the 
ends in the edge view. Figs. 20 and 21, except that they project 
too much at the postero-ventral region, have a closer resemblance to 
fig. 16 than the foregoing ; and I think it most probable that both 
fig. 14 and fig. 16 are referable to the same genus (Candona), but 
they differ specifically from any that I know. 
From the Montana Formation; Coalville, Utah. 
7. METACYPRIS SUBCORDATA, sp. nov. PI. XV. Figs. 2a, b, c. 
Length °6, height -35, thickness ‘5 mm. 
This Metacypris approaches the well-known recent MM. cordata, 
Brady and Robertson,” especially the female form; but the trans- 
verse constriction more strongly impresses the lateral convexity, the 
dorsal region in each valve is more depressed and sloping, and the 
ventral region is more deeply excavated. The surface is marked 
with a shallow, irregular pitting, almost a reticulation. 
The specific name, M. subcordata, is applicable, in allusion to its 
recent ally. 
From the Bear-River Formation; Cokeville, 8.-W. Wyoming. 
8. MEracyPRIs CONSOBRINA, sp. nov. Pl. XV. Figs. la, 6, c. 
Length -45, height -24, thickness -4 mm. 
This is evidently a Metacypris, and nearly allied to both M. Forbesit, 
1 Magaz. Ges. nat. Freunde zu Berlin, II. Quartal, 1808, p. 86, pl. iii. figs. 
19, 20; also Brady, Trans. Linn. Soc. 1868, p. 362, pl. xxiii. figs. 16-22. 
? See Trans. R. Dubl. Soc. n.s. vol. iv. 1889, p. 123, pl. xiv. figs. 3-12, for latest 
notice, by Brady and Norman. 
