246 Mr. J. S. Baly's descrijjtions of 



tellum longer than broad, trigonate, dark metallic blue. 

 Elytra broader than the thorax, convex, very minutely 

 punctured, interspaces smooth and shining, impunctate. 



HermcBophaga nitldissima. 



Breviter ovata, valde convexa, nitida, piceo - nigra, 

 pedibus fulvo-piceis, femoribus dorso nigro-piceis ; supra 

 cyaneo-viridis, uitidissima, antennis piceis basi fulvis ; 

 thorace quam longo fere dimidio latiori ; lateribus rectis, 

 parallelis, antice leviter sinuatis, angulis anticis acutis, 

 extrorsum curvatis, disco Iffivi, tenuissime remote punctate ; 

 elytris convexis, infra basin leviter transversim excavatis, 

 tenuiter seriatim punctatis. 



Long. 1| lin. . 



Hab. — Chanchamayo. 



Head trigonate ; vertex shining, impunctate ; encarpae 

 thickened, contiguous, subquadrate ; carina oblong, tliick- 

 encd, abruptly terminating on the clypeus; eyes prominent, 

 rotundate-ovate, entire ; labrum piceous ; antennas with 

 the second joint ovate, nearly as stout and nearly as 

 long as the first, the latter equal in length to the fourth, 

 the three lower joints obscure fulvous. Thorax one-half 

 broader than long ; sides straight, parallel from the 

 base to beyond the middle, thence very slightly sinuate to 

 the apex ; all the angles acute, the anterior ones produced 

 distinctly outwards; basal margin faintly lobed in front 

 of the scutellum, nearly straight on either side ; disk 

 convex, very minutely and sparingly punctured ; basal 

 sulcation broad, terminating on either side, some distance 

 within the lateral margin. Scutellum trigonate, its apex 

 obtuse. Elytra much broader than the thorax, subquad- 

 rate-ovate ; above veiy convex, excavated transversely 

 below the basilar space, very finely and rather distantly 

 punctate-striate ; interspaces nitidous, impunctate. 



The above species has entirely the facies of a Diphaii- 

 laca ; it has, however, the apices of the four anterior 

 tibife each armed with a minute spine : in Diphaulaca 

 these spines are absent. Although differing somewhat in 

 habit (caused by the transverse depression below the base 

 of the elytra), it agrees in all essential characters with 

 HermcBoplLaga, and must be placed in that genus; the 

 same remarks apply to D. columhica and some allied 

 species descril)ed by von Harold from Columbia, 



