PAL JEORH Y N CHID iE. 
489 
1842-44. Palceorhynchum microspondylum^, L. Agassiz, ibid. p. 85, 
pi. xxxiv a. fig. 2. [Distorted trunk; British Museum.] 
1886. Hemirhynchus colei, A. Wettstein, Fischfauna Tertiaer. Glarner- 
schief. (Denkschr. schweiz. Palaeont. Ges. vol. xiii.j, p. 78. 
Type. Imperfect fish ; British Museum. 
A species attaining a length of about 0-6. Head depressed, its 
maximum depth about two thirds that of the trunk; length from 
end of snout to anterior border of orbit equalling nearly one quarter 
of total length of fish to base of caudal fin; mandible not quite half 
as long as rostrum. Length of longest dorsal fin-spines less than 
half as great as depth of trunk at their insertion; soft dorsal fin 
beginning at eleventh vertebra, soft anal at fourteenth vertebra 
from caudal fin. ^ 
Form. ^ Log. Oligocene: Canton Glarus, Switzerland. 
P. 4122. Type specimen described and figured by Agassiz, loc. cit .; 
Engi. The skeleton is much obscured by matrix, and the 
remains in the abdominal region cannot be satisfactorily 
interpreted. The rays apparently of the pelvic fins are 
inaccurately multiplied and extended in the drawing. 
Enniskillen Coll. 
P. 455, P. 4120. Type specimen of the so-called Palceorhynchum 
egertoni, in counterpart, described and figured by Agassiz, 
loc. cit.; Engi. The skeleton is much obscured by matrix, 
and the so-called “ two singular plates of oval form ’’ 
supporting the caudal fin, are merely the artist’s interpre¬ 
tation of a film of slate. So far as the obscurity of the 
specimen permits judgment, it seems that the soft dorsal 
and anal fins had the same extent as in H. colei ; and 
there is no evidence that the supports of the dorsal fin- 
spines differed from those in this species. 
Egerton Enniskillen Colls. 
P. 504, P. 4121. Type specimen of the so-called Palceorhynchum 
microspondylum, in counterpart, described and figured by 
Agassiz, loc. cit. ; Engi. It is an imperfect trunk 
shortened and deepened by distortion. 
Egerton ^ Enniskillen Colls. 
33943-44. Imperfect trunk in counterpart; Engi. 
Presented by Miss Elizabeth Warne, 1859. 
40178. Imperfect hinder portion of small trunk; Engi. 
Purchased, 1866. 
