242 Mr. G. C. Champion on Lagriidae and Pedilidae. 



Apparently not uncommon in the neighbourhood of 

 Rio de Janeiro. The numerous specimens before me vary 

 greatly in size, and in the colour of the body, and also to 

 some extent in the intensity of the elytral sculpture, two 

 small males from Macahi having the punctures more scat- 

 tered and the interspaces smoother. In this species there 

 is no trace of a seriate arrangement of punctures on the disc 

 of the elytra, the basal joint of the anterior tarsi is greatly 

 thickened, the head is broadly truncate at the base, the 

 eyes are large, oval, and coarsely facetted, and the pos- 

 terior femora are constantly fusco-maculate. 



54. Macratria frontalis, n. sp. 



cj. Moderately elongate, narrow, shining, the prothorax sub- 

 opaque, the surface sparsely cinereo-pubescent ; piceous, paler 

 beneath, the anterior half of the head, the palpi, antennae, and legs 

 testaceous, the rest of the head rufescent. Head transverse, as 

 wide as the prothorax, broadly truncate and unimpressed at the base, 

 closely, minutely punctate ; eyes moderately large, not prominent ; 

 antennae very slender, moderately long, joints 9-11 elongated and 

 thickened, 11 nearly twice as long as 10. Prothorax elongate-oval, 

 compressed on the flanks posteriorly, densely scabroso-punctate, 

 the basal groove incomplete. Elytra comparatively short, narrow- 

 ing from the base, closely, finely, confusedly punctate, without im- 

 pressed lines on the disc, the sutural and submarginal striae excepted. 

 Legs long, the femora clavate; basal joint of the anterior tarsi very 

 stout, wider than the tibia, that of the posterior pair curved ; inter- 

 mediate tibiae feebly sinuate within. 



Length 3 mm. 



Hob. Amazons, Rio Jurua [lower] (Trail). 



One example, labelled 12-14. xi. '74, received by the 

 Museum in 1897. A small, narrow form, piceous in colour, 

 with the anterior half of the head and the limbs testaceous ; 

 the head transverse, and broadly truncate behind ; the 

 elytra comparatively short, narrowed from the base, and 

 not striate ; the basal joint of the anterior tarsi (<$) greatly 

 widened. The eyes are smaller and less coarsely facetted 

 than in the much larger M. crassimanus, the elytra, too, 

 are shorter and not subparallel as in that insect. 



Explanation of Plates LXIII, LXIV. 



[See Explanations facing the Plates.] 



