FALJEORH YNCHIDJ5, 
485 
1842-44. Potato rhjnch um latum L. Agassiz, ibid. p. 82, pi., xxxii. 
fis. 2, pis. xxxv., xxxvi. [Distorted fish ; British Museum.] 
i 842-44. Palteorkynehum medium', L. Agassiz, ibid. p. 84, pi. xxxiii. 
[Fragmentary fish ; Zurich Museum.] 
1886. Palceorh yncb us glaronensis, A. Wettstein, Fischfauna Tertiaer. 
Glarnerschief. (Denkschr. schweiz. Palaeont. Ges. vol. xiii.), p. 73, 
pl ii. figs. 14-10. 
Type. Imperfect fish. 
The type species, attaining a length of about 0'8. Complete 
length of head with opercular apparatus little less than one half 
that of the vertebral column - r maximum depth of trunk contained 
about 14 times in total length of fish. Neural and haemal spines 
°f vertebrae straight and vertical in anterior part of caudal region. 
Nearly 50 dorsal fin-spines, the length of the longest about equalling 
that of 10 vertebra ; 15 to 18 short divided rays in the hinder part 
°f the dorsal fin ; anal fin with about 35 spines and 32 divided rays, 
the spines gradually increasing in length to the middle of the fin 
where they are longer than the dorsal spines. 
•Almost all the known fossilised examples of this species are con- 
siderably distorted, and it is difficult to determine the exact pro- 
portions of the fish. The accompanying restoration (fig. 17) seems 
to be approximately correct. 
1'orm. ,(• Poe. Oligocene : Canton Glarus, Switzerland. 
1713. Head with abdominal region, described and figured as 
belonging to this species by Agassiz, tom. cit. p. 81, 
pl. xxxiv. fig. 1 ; Engi. Some of the elongated rays of 
both pelvic fins are shown. Egerton Coll. 
T- 503, P. 4123 . Type specimen of the so-called Palaorhynchum 
latum , in counterpart, figured by Agassiz, tom. cit. 
pl. xxxii. fig. 2 ; Engi. The skeleton, which is deepened 
by distortion, is much obscured by matrix, the false 
appearance of a large crest on the head in the figure being 
due to this circumstance. A lithographed plate of this 
specimen was published by the Earl of Enniskillen (when 
Lord Cole) in 1820. Eyerton $ Enniskillen Colls. 
^1814. Fine specimen 0‘8 in length, but a little elongated by 
crushing • Engi. There are remains both of pectoral and 
pelvic fins ; and three of the pelvic fin-rays preserved 
seem to bifurcate distally. The separation of the two 
halves of the dorsal fin-spines is distinct. 
Purchased, 1869. 
1 These specific names were first published without definition in Egerton’s 
Catal - Foss. Fish, 1837. 
