CRETACEOUS FISHES. BY if 
furnished with eight or nine long hooked teeth on each side, ornamented with 
deep parallel grooves ; the bone rises abruptly at the termination of the dental 
portion ; and the remainder, amounting to more than half of the entire length, is 
edentulous ; the teeth in the anterior portion of the upper jaw are larger and 
straighter than those in the lower. 
Tomognathus leiodus, R. 1. (Tab. XXX. fig. 31.) 
Mr. Catt has a specimen of this genus which appears to be distinct from the 
preceding ; the most appreciable character is the absence of grooves on the 
teeth. The upper jaw appears to have been more prominent, and the teeth more 
attenuated. I discovered a lower jaw of this fish many years ago at Washington, 
Sussex. Mr. Catt has since found more perfect specimens with both jaws: the 
engraving is taken from a specimen in his cabinet. This species is in the col- 
lections of Lord Enniskillen, Sir Philip Egerton, Mr. Bowerbank, Mr. Coombe, 
and Mrs. Smith of Tonbridge Wells. 
