SPECIES OF THE GENUS DIABEOTICA. 229 



piceous beneath (the rest of the joints broken off). Thorax 

 scarcely one half broader than long ; sides pai^allel and nearly- 

 straight from the base to beyond the middle; upper surface 

 smooth, excavated on the middle disk, faintly bif oveolate. Elytra 

 oblong, distinctly punctured. 



I. Elytra metallic green, their apices rufo-piceous. 



36. DiABROTiCA SUFFUSA. Elongata, convexa, piceo-fulva, nitida; 

 tibiis, tarsis, oculis antennisque nigris ; thorace Isevi ; elytris parallelis, 

 ci'ebre subfortiter punctatis, sordide viridi-cyaneis, limbo laterali an- 

 gusto apiceque pallide rufo-piceis. Long. 4 lin. 



Var. A. Elytris fere totis rufo-piceis. 



S^ab. Eusagasuga; Oceana (Landolt). 



Head not longer than broad, triangular ; eyes very large, 

 prominent ; vertex smooth, impunctate ; encarpse contiguous, 

 subpyrif orm ; carina short, strongly raised, linear, terminating 

 below on a strongly raised transverse ridge, which extends across 

 the lower part of the clypeus. Antennae filiform, in the male 

 equal to the body in length, shorter in the other sex, the second 

 joint short, obovate, the third nearly twice the length of the 

 second, scarcely more than half the length of the fourth, 

 the remaining joints each nearly equal in length to the 

 fourth ; the basal one piceo-fulvous, the rest black. Thorax twice 

 as broad as long ; sides straight, diverging from the base to 

 beyond the middle, rounded • and converging at the apex ; disk 

 impunctate, the middle disk flattened. Elytra broader tlian the 

 thorax, parallel ; above convex, closely and rather strongly punc- 

 tured. 



The metallic colour on the elytra in this species varies greatly 

 in extent : in some specimens it covers nearly the whole surface, 

 in others it is scarcely visible, except at the extreme base. 



J. Body ovate, dilated posteriorly, strongly convex ; elytra black, 

 a curved fascia at tlie base, sometimes interrupted ; a medial 

 fascia and a subapical spot fulvous ; these markings slightly 

 raised above the surface of the disk. 



37. DiXBnoTiCA.TVinfO-siGi'fAiA, Ball/, Ann. ^Ma^.Ifat.JIistt 

 ser. 5, vol. iii. 1879, p. 77. 



Hah. Colombia; also Gruatemala. 



IiINK. JO¥EN. ZOOLOGY, VOL. XIX. 19 



