/ 
CHIIdLERimE. 87 
Leptomylus coohi, E. D. Cope, Proe. Amer. Phil. Soc. vol, xi, 
(1871), p. 384.—Greensand ; New Jersey. 
Leptomylus forfex, E. D. Cope, Vert. Cret. Eorm. West (Pep. 
U.S. Geol. Surv. Territ. vol. ii. 1875), p. 281.—Green¬ 
sand ; New Jersey. 
Genus CALLORHYNCHUS, Gronow. 
[Zoophylacium Gronov. 1763, pt. i. p. 31.] 
Snout with a cartilaginous prominence, terminating in a cutaneous 
flap; tail heterocercal. Mandibular tooth, more or less massive, 
with a well-defined thick band upon the outer aspect immediately 
below the oral margin ; anterior and outer tritors absent or minute ; 
median tritor well developed. Palatine tooth robust, with a well- 
defined thickening upon the outer aspect immediately above the 
oral margin ; a single large tritor, bifurcated anteriorly, occupying 
the greater part of the oral surface. Vomerine teeth more or less 
quadrate in side view. Dorsal fin-spine laterally compressed, 
smooth or longitudinally striated, with a double series of posterior 
denticles. Head-spine of male short, arched, with a terminal 
cluster of denticles. 
Callorhynchus hectori, Newton. 
1876. Callorhynchus hectori , E. T. Newton, Quart. Journ. Geol. Soc. 
vol. xxxii. p. 329, pi. xxi. figs. 6-9. 
1878. Callorhynchus hectori , E. T. Newton, Chimseroid Fishes Brit. 
Cret. Pocks (Mem. Geol. Surv., Monogr. iv.), p. 41, pi. xii. 
figs. 11, 12. 
1888. Callorhynchus hectori , J. W. Davis, Trans. Poy. Dublin Soc. [2] 
vol. iv. p. 41, pi. vii. figs. 14, 15. 
Type. Pight palatine tooth : British Museum. 
Palatine tooth slightly differing from that of the recent C. ant- 
arcticus in the more forward production of the two divisions of the 
tritor. 
Form. § Log. “ Lower Greensand: ” Amuri Bluff, New Zealand. 
P. 2301. Type specimen. By exchange. 1876. 
