SOUTH AMERICAN EUMOLPID®. 171 
occurs in numbers from the same locality. The last ventral 
segment of the ?’s of both species is strongly serrate. 
Colaspis impressipennts, sp. NOV. 
Medium sized. Below purple black, with sides of thorax and 
breast more or less metallic ; above, dark cyaneous blue, with edges 
in certain lights picked out very narrowly with cyaneous ; antennae 
brown (scape tinged with metallic), darker towards the tip; legs 
purplish black, apex of tibiz and tarsi fuscous rufous; elytra with 
transverse basal depression across the elytra. 
Type, ?, Cachabé, low c., January, 1897 (Rosenberg). 
Length, 4 mm. 
Head transversely depressed and moderately thickly punctate, 
thorax rather sparsely punctate ; coarse and confluent at the 
sides, which are strongly angulate at the middle and nearly 
straight at the base (like cupreovittata, Lef.) ; all the angles very 
marked ; scutellum smooth. Elytral punctures rather coarse at 
the base and sides, confluent at the latter, fairly regularly 
punctate striate on dise and behind. Size and shape of gemmula, 
Kr., but that form has light legs and strongly rugose upper 
surface. 
Colaspts jocosa, sp. Nov. 
Small, oblong. Below black, sides of prothorax and breast green ; 
above brilliant metallic green; antenne and legs black; the base of 
the former and tarsi of the latter semi-rufescent; femora semi- 
eneous ; thorax strongly and rather evenly but not thickly punctate ; 
sides strongly angulate at middle. 
Type, two ¢, Rio Juntos, Boliv., green label (Callanga), Peru. 
Length, 3-36 mm. 
Head coarsely punctate, with smooth frontal calli; the usual 
cross depression poorly defined; thorax strongly transverse, 
faintly depressed each side of the middle. Elytra with strong 
humeral and transverse depressions, throwing up the scutellar 
area as in Compta, Lef.; finely geminate punctate striate on 
dise, coarser at the base and sides, and fine and regularly striate 
at apex. Very like pumilio, Lef., but much larger, and without 
the cyaneous colour of that species. 
Colaspis @neicollis, sp. nov. 
Very small. Head, thorax and scutel bright wneous bronze ; 
elytra bright chestnut rufous, with the sides below the shoulder and 
suture somewhat suffused bronzy; body below and legs opaque 
rufous, with inflexed sides of thorax bronzed; antenne rufous, 
darkened at tip. 
Type, ?, Salinas, Beni R., July, 1895 (Stuart). 
Length, 2°56 mm. 
