﻿184 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 102 



num with scattered very fine punctures at middle, a few coarse shallow 

 punctures and alutaceous sculpture at sides, median longitudinal line 

 moderately impressed. Second abdominal segment carinate between 

 coxae, closely, shallowly, setigerously punctate anteriorly, remaining 

 segments smooth, coarsely deeply crenate anteriorly. Covered portion 

 of pygidium longitudinally grooved to receive tips of elytra, which 

 lock together with tongue-and-groove sutural edges, disc of exposed 

 portion depressed but smooth, with a few scattered very small low 

 tubercles basally. Anterior ventral prof emoral line and posterior fem- 

 oral line of middle fenmrs entire, wide, moderately deep and alutace- 

 ous. Posterior femurs smooth, with scattered minute punctures, with- 

 out femoral line. Anterior tibiae externally tridentate. Middle and 

 hind tibiae with well-developed oblique carinae as in Aphodius^ ter- 

 minally without fringe of spinules but with two widely separated 

 triangular teeth on ventral apical edge, each tooth with a fine hairlike 

 seta basally on each side, outer apical angle prolonged, spinelike as 

 in Ataenius. Long spur slightly shorter than first tarsal joint, which 

 is as long as the three following joints combined, tarsal claws minute. 

 Sex not determined but probably a male. Length 4 mm. ; width 1.75 

 mm. 



EoUtype.—V. S. N. M. No. 59444. 



The unique specimen of colomMensis was collected at 2,900 meters, 

 above Guasca, Cundinamarca, Colombia, March 10, 1942, by Dr. E, A. 

 Chapin. 



U S. SOVERNMENT PRINTING OFFICE I9BJ 



