138 TEETIAEY EHYNCllOPHOEOUS COLEOPTEEA. 



!I3;) and !»40, 1044, 105S, U. 8. Geological Survey. White river, Utali, 

 tVdiii tla^ \erv liigliest liecLs next ( -olorado boundary. One specimen, No. 

 707, U. S. Greological Survey. 



AULOBARIS COMMINUTA. 



I'l. XII, Fig. !l. 



The t'orni is slender and paralk^l-sided. All the s])ecimens are some- 

 wliat obscure, not permitting a- very close description. The head is longer 

 than in the other species, and the eyes small and subcircular; beak short 

 and sttiiit, considerably shorter than the ])rothorax, hardly arcuate. Pro- 

 thorax consideraldv nu>rv than half as high again as long, tapering a little, 

 hardh- full, punctate. Elytra long, hut little arched, ])unctato-striate. Legs 

 rather long, the tibia3 very slender. 



Lengtli, excluding rostrum, y-.")"""; rostrum, O-fi"™; height of l)ody, 



i-2ry""'. 



White river, Utah, from the highest elevation next the Colorado l»order. 

 Two specimens, Nos. 702, 703, U. S. Geological Survey. The same locality, 

 from blocks on the river bank that had fallen from clifls. One specimen, 

 No. 397, U. S. Geological Survey. 



CENI^RINUS Sch.-.nherr. 



A strictly American t\pe with numerous species, of which about half 

 occin- in North America, mostl\- in the Southern States. Two s^jecies occur 

 in our Tei-tiarles, one at Florissant, Colorado, the other at Green River, 

 Wyoming. 



Tiihic <;/ //(*' sprrics of Vcnfrinu.s. 



Dors;il curv»^ considerable ; av>t'X of elytra subac.muiiKite ; eyes ol)li(|ne,ly oval olnt xptns. 

 Uorsiil eurve slij-bt; apex of elytra broadly rounded ; eyes trausveisely oval ilinqjlus. 



CENTKINrS OKNIIPTUS. 



PI. II, Fio-. -J: PI. vu, Fi- (1; PI. XII, Fio-. 2. 



Body ovate, about twice as long as broad, the dorsal curve regular and 

 consideralde. Head fullv half as lon^- as high, minutely punctate; ej'CS 

 oblicpiely oval, moderatel}- large, situated low: l)eak slender, equal, gently 



