Cope.] 230 (Dee. 21, 
the superior border situated interiorly to, the line continuing the inner bor- 
der upwards. The tooth line is elevated at the upper extremity. The basal 
teeth are more robust than the others, and do not present grinding faces. 
The nutritive foramina are more numerous and smaller than in the A. 
breviarcus. 
Measurements. M. 
Vertical extent of right pharyngeai............- Selene .023 
Warditihvat Secondtooth ace sree eee cee eet ieee .009 
a at first Spear to Abeh tin Aah TIC OOO ote o 004 
Gene th of tooth limes. ( ear reetalelalels aie Pictolele e7crerare mel cretion .012 
cx Of thirdBtootheecneeeecce coe eee sl ayaletereistereie eee .006 
ce of basal limbitomirst tooths... ec bie a nistsieteie™ O11 
Found with the last species by Chas. H. Sternberg, in the Pliocene de- 
posit of Oregon. 
ALBURNOPS ANGUSTARCUS Sp. OV. 
Represented by the pharyngeal bones of both sides, of a species of about 
the size of the one last described. The characteristic marks of these are 
seen in the long extremities, both inferior and superior, and in the very 
slight convexity of the ala, which is less prominent than in any of the Cy- 
prinide here described. The superior end of the tooth basis is elevated 
and prominent. In one of the jaws all the teeth display a masticating sur- 
face. Inthe other the second tooth, the only one preserved, is partially 
worn. 
The length of the proximal limb distinguishes this pharyngeal bone from 
that of the Anchybopsis breviurcus, if the generic characters be disregarded. 
From all the other species the slight prominence of the ala separates it. 
Measurements. M. 
Vierticaliextentot tisht phanymigeall iret iidlereteterelels 028 
Leneth: of proxamal wim... seiic ae eee emer 010 © 
iG GOON NINDS be o6ct Be ooasnodoousooIdcoaax06C 010 
ae OF Ai stalin satepete eratate cis oat cols ctens, sraiotare eievore stolons .012 
Wadtheattinst) tooblinseemeeein reno. de atd re hoc che ere lers 005 
os OMsecondmMiooth it weet teenie a ee tote raeresters 007 
ene thvof thindetoouheeec-jscieletesietelereye lols clearer 005 
Found by Mr. Sternberg, with the last species. 
ALBURNOPS GIBBARCUS sp. nov. 
One left and two right pharyngeal bones furnish the characters of this 
species. Their form is angulate, as in the Anchybopsis altarcus, but shorter 
in the vertical direction. The proximal limb is rather short, and the dis- 
tal one not as long as in the species last described. The ala widens abh- 
ruptly at the inferior margin, and the thin superior edge of the superior 
limb is obtusely angulate. The nutritive foramina are rather numerous. 
The first and second teeth display little or no grinding surface. 
