Cope.] 230 {Dec. 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. 
breviareus. 
Measurements. M. 
Vertical extent of right pharyngeal...............0. eee .023 
Width at second tooth. ......... cc cece eee eta e renee 009 
“at first OC BS RG Rea eR LETT TAS SURLEE 8 004 
Length of tooth line... 0.2... cece eee ce ec eee ers e eens .012 
ns GENE, CO OC isiaie 0 5 woerneceineenees te cow preie alan oiere 006 
Me of basal limb to first tooth...........ceeee eee ee O11 
Found with the last species by Chas. H. Sternberg, in the Pliocene de- 
posit of Oregon. 
ALBURNOPS ANGUSTARCUS sp. nov. 
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 brevinreus, if the generic characters be disregarded. 
From all the other species the slight prominence of the ala separates it. 
Measurements. M. 
Vertical extent of right pharyngeal.............00e eee 023, 
Length of proximal limb... ......... 0.0 ee cence eee -010 
ne of tooth line........ hia tad apanantumiand eiiecki Mareen Glevuaneie .010 
w Of distal iM: .wwAcs Sesh nosed earn aae4 012 
Width Atatirst: tOOthsawciee's oxy samuncmamet eye ge wscne ose 005 
ee of second tooth.......- +2... eeee: Nerieamnelg 007 
Length of third tooth. ....-... see e eee cece eee eens 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 ab- 
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. 
