460 CLASSIFICATION OF DEVONIAN FISHES 
and of the dentition, it would be hazardous to form any decided opinion 
as to the affinities of Zrzstichopterus ; | strongly suspect, however, that 
it will turn out to be the type of a new family allied to the Ctenodo- 
dipterini and Ceelacanthini. 
The cranio-facial bones are lettered as follows in the woodcuts :— 
S. O. Supra-occipital. Aly, Maxilla. 
fy. Frontal. Prix. Premaxilla. 
L£th, Ethmoid. #1. M. Ayomandibular bone. 
Ep. Epiotic. Qu. Os quadratum. 
fa. Parietal. SS. Supra-scapular. 
Sg. Squamosal. Op. Operculum. 
Pt. F. Post-frontal. S. Op. Sub-operculum. 
Pr. F. Pre-frontal. Ju. Jugular bones. 
S. 7. Supra-temporal. Sp. O. Spiracular ossicles. 
Ft. O. Post-orbital. St. O. Supra-temporal ossicles. 
Sb. O. Sub-orbital. 
P.O. ‘*Pre-operculum” occurs in the woodcut, fig. 2. ; but I am now much inclined to 
doubt the existence of a true pre-operculum in any Crossopterygian fish. 
Jermyn Street, Nov. 1, 1861. 
{Nore.—By the great kindness of Dr. Taylor, of Elgin, I have just had the opportunity 
of examining a beautiful, almost entire, specimen ot Glyf/opomus, with two dorsal, and 
exquisitely lobate pectoral, fins. —T. H. H., Nov. 18th.] 
