PHYTOPHAGOUS COLEOPTEKA FROM PARAGUAY 183 



tooth at the middle, the basal portion behind the tooth, slightly 

 rounded, all the angles likewise acutely dentate, the surface 

 closely punctured at the sides, more sparingly so at the disc, 

 the latter of the same colour as the head, opaque ; elytra dark 

 blue, with a short depression below the shoulders, the surface 

 punctured in irregular double rows anteriorly, singly punctate- 

 striate below the middle, the interstices at the latter place Ion- 

 gitudinally costate, legs entirely fulvous. 



The tooth or angle at the sides of the thorax, is more marked 

 than in any species of Nodonota I have seen and the margin 

 above this tooth is oblique and not rounded as in the preceding 

 species, the antennae are also much shorter than in the latter 

 and entirely fulvous; in the female which I look upon as re- 

 presenting this species, the colour is brownish-aeneous, that of 

 the legs aeneous, with the base of the femora and the tarsi 

 fulvous, the thorax does not differ in shape or sculpture nor the 

 elytra, but the latter have three short narrow tubercles placed 

 at the base near the shoulders ; of both sexes only single examples 

 were obtained and it is therefore doubtful whether the different 

 colour is constant according to the sexes or not, till more ma- 

 terial comes to hand. 



7. Colaspis Gestroi, sp. n. — Brownish-aeneous, antennae more 

 or less fuscous, legs flavous, thorax strongly dentate at the mid- 

 dle, strongly and closely punctured, elytra punctate-striate near 

 the suture, the interstices strongly transversely rugose at the 

 sides, posterior femora aeneous at the apex. 



Length 3 mill. 



Head very strongly and closely punctured, without depressions, 

 labrum fulvous, antennae extending to the base of the elytra, 

 the lower four joints fulvous, the others fuscous, thorax nearly 

 twice as broad as long, the sides oblique, strongly produced 

 into a tooth at the middle , the surface strongly and closely 

 punctured, the punctures at the sides very large and partly 

 confluent, the basal margin accompanied by a finely punctured 

 groove , scutellum smooth , elytra with three or four partly 

 double rows of punctures near the suture, the sides irregularly 



