Cope. | 180 [Aug. 17, 
of a boot with the toe elevated. The inferior edge of the inferior process 
is acute. 
The inferior border of the ramus is thin. The superior border is thick- 
ened, and its tooth bearing surface descends on both the internal and ex- 
ternal faces of the bone. Posteriorly, this face is presented inwards, but 
this tooth-band narrows forwards on this side, and widens on the external 
face. Its greatest width on the latter is posteriorly, an inch in front of the 
widest internal exposure ; it then gradually contracts, its inferior border 
rising to a short distance behind the symphysis. 
The dental alveoli are small and round, densely packed, and sub-equal 
in size. Near the middle of the ramus, thirty longitudinal rows may be 
counted. Nota tooth remains. <A transverse section of the greater part of 
the length of the dentary is strongly convex; anteriorly it is flat- 
tened above. 
Measurements. M. 
IO EmoTIN Git MINUS Goo ob coond son Ob ceoocoDoDOUscuKCHbOD 2384 
Cae Stoo thimbamnd terriers at = SGveieheis gio snes. siesta grote . 150 
ID OHN Gi yO Ss oo cones caonboasnoboOscaooGds00QuD .016 
Cat posterior endlor coothibang) passes .050 
SOM ATI SLOT OVC CAV Itiyiaieis sceholcltehesels tye) toler atctsheks lol otetofereiel le 019 
SSP PSE ATL OMS ebys (ats dtecs, Stislrcvs ce ets verre aie eke aey excl 'cerevasie la ontayette indars .080 
STRATODUS OXYPOGON Cope. 
This fish is represented in Mr. Sternberg’s collection by a dentary bone, 
a probable maxillary, and a portion of the palatine, both the latter without 
their extremities. A number of vertebree accompany the jaws, which prob- 
ably belong to the same individual. 
The dentary is narrow and cuneiform, and rather robust for its depth. 
The tooth band is wide, covering more than half the vertical diameter of 
the bone, and is bounded below by a groove. The external face is convex. 
A delicate groove extends along the superior margin just below it; and a 
wide open groove commences behind the middle of the length and above 
the middle of the vertical diameter, opening widely behind. The inferior 
edge is compressed and flat, and is abruptly distinguished from the convex 
portion. The symphyseal surface is short, and the infero-anterior border is 
produced into an acute angle. The teeth are in six rows on the widest part 
of the band. Of these one contains larger teeth than the others; at one 
point it is the second from the external margin, but its position becomes 
more interior on the anterior part of the band. The teeth are recurved, 
round in section, and with simple, very acute apices. These are transpa- 
rent and vitreous ; the remaining portion of the tooth is opaque, and marked 
with whitish dots. At the anterior extremity of the dentary, but two rows 
of the smaller sized teeth remain. 
The alveolar fosse of the teeth of the three interior series of the dentary 
band, have a peculiar character. The internal half of the border has short 
radiating lines touching its circumference, but the external half supports 
