76 ROY L. MOODIE 
succeeding one is still of considerable size. All of the teeth preserved 
are longitudinally striated but only the two anterior ones are recurved 
to any extent. 
MEASUREMENTS OF THE TyPE OF Sauropleura longidentata MoovIE 
Wengthrof-theyskull:incmedianulimnes ae ri cee ee ee 75 
Width of skull at posterior border, estimated................ 80 
Widthcofskull’across orbits: estimated, ayia.’ se 60 
Widthtor orb itcn (Mies sare k teeters en tte toeeet et ponent 10.6 
Weng throh Orbits cc meets ters kone ees ee Muar era eis, ocean eee 12 
Interorbitalpspacess eye ey eye es ety ete ee ee 16 
Wengthrot jaws-aS ppreservedon. cmep sc ace ie sk nase Nee arias 48 
Widtheof jaw. wimaxammutiny. 6a) eee en arcaeth scm eaye ie rescore 16 
Wiacdith; of; jaw, smilm imate ie aenneta ee) ela eerie 5 
Ikength:oflongest:toothis cia eee ieee oe re tne rarer II 
Width of longest-tooth at-baseiaa.e hei ae one 4-5 
enethrotshorteststoo thi erry ten ene tee let rear eens 3 
Widthiot shortest tooth at bases (x21. a ower nue I 
This specimen forms a part of the Newberry collection of the 
American Museum of Natural History where it is No. 8,619 G. 
EOSERPETON TENUICORNE Cope gen. nov. 
(Fig. 20) 
The new genus Hoserpeton is erected for the reception of a single 
species originally described by Cope as Ceraterpeton tenuicorne. It 
cannot be placed under the genus Ceraterpeton, however, on account 
of the form and structure of the skull which varies widely from that 
of the type species of Ceraterpeton, C. galvani Huxley. The most 
important character in which the present species differs from C. gal- 
vant Huxley is the peculiar form taken by the prosquamosal as well 
as the fact that it is the epiotic which has the horn-like projection in 
C. galvani Huxley while in Eoserpeton tenuicorne Cope it is the supra- 
temporal which bears the projection. The present species also lacks 
the projection at the side of the skull which is characteristic of the 
Ceraterpeton. No undoubted remains of the genus Ceraterpeton 
occur outside of England and Ireland, so far as [am aware. Fritsch 
referred a species, provisionally described as Scincosaurus crassus, 
to this genus but Andrews, Jaekel, and Woodward all agree that the 
species does not belong under Ceraterpeton. Jaekel even says there 
