CIIROMID^). 
555 
1884. Priscacara clivom, E. D. Cope, Vert. Tert. Form. West, Book I. 
p. 96, pi. xiii. fig. 3. 
Type. Imperfect fish ; National Museum, Washington. 
More elongated than the type species, maximum depth of trunk 
contained somewhat more than twice in total length to base of 
caudal fin. Profile very steep in front of origin of dorsal fin. 
-The specimens enumerated below as probably referable to this 
species, seem to exhibit 9 vertebrae in the abdominal, lo in the 
caudal region. 
Form.# Loc. Eocene (Green River Shales): Twin Creek, V yoming, 
U.S.A. 
P. 5938. Imperfect specimen apparently of this species, with incom- 
plete soft dorsal and anal fins. 
Presented by T. A. Ridcard, Esp, 1889. 
P. 6187, P. 7494. Two fine specimens. Purchased, 1890, 1895. 
P- 7493. Two small specimens on one slab. Purchased, 1895. 
The following species have also been distinguished, but are not 
represented in the Collection : — 
Priscacara cypha, E. D. Cope, Bull. U.S. Geol. Surv. Territ. yol iii. 
(1877), p. 817, and Vert. Tert. Form. West, Book I. (1884), 
p. 94, pi. xiii. fig- 2.— Eocene (Green River Shales); 
Wyoming, U.S.A. [Imperfect fish; National Museum, 
Washington.] , 
Priscacara Hops, E. D. Cope, loc. dt. 18/7, p. 8 , an op. ci 
1884, p. 97, pi. xiv. figs. 2, 3.— Ibid. [Ditto ] 
Priscacara orti/yrion, E. D. Cope, Bull. U.S. Geo . > ui v. cm 
vol. iv. (1878), p. 74, and op. cit. 1884, p. 04, pi. xiv. 
fig. 5. — Ibid. [Ditto.] 
Priscacara pealei, E. D. Cope, loc. cit. 1878, p. >5, and op, . at. 
1884, p. 96, pi. viii. fig. 4, pi. xiv. fig. 4.— Ibid. [Ditto.] 
Priscacara testudinaria, E. D. Cope, op. cit. ' _> P - ’ P ‘ l ' 
fig. 7. — Lower Eocene; Manti, Utah. [Portion of trunk.] 
Remains apparently of the existing tropical American genus 
A cam have been recorded from a freshwater Tertiary Lignite at 
Taubate, in the Province of San Paulo, Brazil, by A. S. Moodward, 
Dev. Mus. Paulista, vol. iii. (1898), p. 69- 
The marine family of Pomacentridje, with skeleton not distin- 
guishable from that of the Chromid®, is supposed to be represented 
