155 
ON THE FOSSIL FISHES OF THE UPPER LIAS OF WHITBY. PART IL 
BY ARTHUR SMITH WOODWARD, F.L.S., F.G.S., OF THE 
BRITISH MUSEUM (NATURAL HISTORY). 
Plates XIX. -XXI. 
Family EuGNATHiDiE (continued). 
Caturus sp. ind. 
Plate XIX. 
Though not hitherto discovered at Whitby, the genus Caturus 
has already been recorded from the Upper Lias at Ilminster, Somer- 
setshire, whence a fine specimen was obtained by the late Charles 
Moore."' The Upper Lias species, however, have not been precisely 
determined, and the two new specimens now to be described are 
unfortunately insufficient to display all the essential specific characters 
of the fish to which they belong. One of these is preserved in the 
Whitby Museum and the other in the York Museum, but neither 
shows much more than the crushed and imperfect head. The writer 
has not observed any other specimen. 
The specimen in the Whitby Museum exhibits the head and 
abdominal region from the left side and partly from above ; and the 
anterior half of the fossil is shown of the natural size inpL xix., fig. 1. 
Of the cranium itself only the imperfectly preserved frontal bones are 
shown, each apparently as broad in front as behind, and the maximum 
width contained nearly three times in its length ; the hinder half of 
the frontal is smooth, while its anterior half exhibits coarse radiating 
rugse apparently due to irregularities in growth. Behind the cranium 
the displaced supratemporals are shown. That of the right side 
*A. S. Woodward, "Notes on the Collection of Fossil Fishes from the 
Upper Lias of Ilminster, in the Bath Museum." Proc. Bath Nat. Hist, and 
Antiq. Field Club, vol. viiL, 1896, p. 235. 
