& 
STEWART: ICHTHYIC FAUNA OF THE KANSAS CRETACEOUS. 25 
below the palatine condyles as in Portheus. The two superior 
condyles are situated much nearer each other than in the form just 
mentioned; the anterior is elevated upon a pedicel and is rather 
tubercular. The palatine is elongate, narrow and nearly flat, it 
does not have the prominent internal notch which I have observed 
in D. phlebotomus. The teeth are closely set, with compressed 
knife-like crowns and smooth enamel surface, appearing very 
slightly striate under the microscope. One deep notch occurs to 
each tooth; as in the form just méntioned above, alveola for thirty- 
one are found. A single predentary was found on the same slab 
with the above, and no doubt belongs to this specimen. It is a 
small, triangular element, the posterior surface of which is very 
irregular for cartilage, binding it to the dentary. The upper 
border is edentulous, the lower thin and sharp; the two borders 
meet at an acute point anteriorly. 
MEASUREMENTS. MM. 
Wencthpoiemaxill ayer rattle tatas Aces sc estates osm apo ewele «ecb ciake se as 122 
Length of palatine condyle...... Ly te ROTO E PIERO OTT CE DISSE Atel Oe chee 18 
Dig OE uagsvillenaw eye eS COMERe. no a adaoeoonu baad SteunbooceonCodsmeme 37 
DWepimot bone atapalatine Gondyiles sas snes sea eis os eyes elated pele iatelere = 44 
NEM Ela Oba tee unm TaGIINs acters ciate eysia tale aie sole co eiahe ey co verchel aisle auelaete ce erece es oF 
encom Crownemeasuredks externally; jo. 20. aso 2c- abies 2 abe teers 3-5 
AMeG GE pOSstenor breadth, Of Crown. 2... s oe oe lacwAcwe eae te Datos! | = a5 
We oplmolg pre dentailys acy sesite tend ach eee siicie ane ootenene ieee Del atiheayeGa sie oe 28.5 
Wenvihvotpredentanys approximalliliycc)s1--\sis sacar seat) vel vevaieis chara =p sr sh 30 
Saurocephalus dentatus, sp. nov. 
Established upon the left maxillary, premaxillary, and mandible 
of one individual and the left mandible of another. The speci- 
men is from the Niobrara Cretaceous of Wallace county, and was 
found by Mr. E. P. West. 
The maxillary is larger and more elongate than in Daftinus 
broadheadi just described. The superior border is very thin and 
more elevated just back of the palatine condyle than in Daftinus. 
The palatine condyle is strongly convex from before backward. 
Anterior to the palatine there seem to have been two condyles 
which were probably for the ethmoid and vomer, the most posterior 
of these is broken away but from the base it appears to have been 
elevated as in DV. droadheadi. The anterior of these condyles is 
rather large and triangular in outline and is bounded in front by a 
shallow pit not found in Dapéinus. The teeth are similar to those 
described by Cope.+ They decrease in size toward the posterior 
extremity. Alveola for thirty-eight are found. 
*Estimated. 
+Cret. Vert., 216. 
