96 Mr F. P. Pascoe's Descriptions of New Genera 



Although the common Stromalium streperis, F.,has a wide range 

 in the old world, I have nowhere seen it mentioned as a native of 

 the new ; however, it seems to be common about Rio de Janeiro: 

 and I have now the pleasure of adding another species, not very 

 dissimilar, but abundantly distinct in its prothoracic mamillary 

 protuberances and other characters, from Espiritu Santo, a pro- 

 vince bordering Rio on the north. 



Pachylocerus plumiferus. (PI. XXIII. fig. 5.) 



P. brunnescente-ruber ; prothorace rude sulcato, subnitido atro- 



maculato ; elytris pubescentibus opacis atro-maculatis ; an- 



tennis articulis tertio ad sextum apice plumosis ; metathorace 



abdomineque pubescente atro, prothorace subtus pedibusqne 



ferrugineis. India. 



Brownish red, the head and thorax glabrous, the latter deeply 



sulcate, shining, with eight black spots not very clearly defined, 



four of which are central and two on either side ; elytra pubescent, 



very dull, each with about four small black spots towards the 



base and a large black patch posteriorly ; abdomen and breast 



black, with a somewhat silvery pubescence, the thorax beneath 



and legs ferruginous ; antennae very thick ; the ends of the joints, 



from the third to the sixth, with a tuft of short hairs on one si('e 



beneath. 



Length 10| lines. 



This may be possibly the male of Olivier's Cerambyx crassU 

 cornis, yet his figure is so unlike the present insect, and his 

 description so loose, as fairly to justify their separation, until 

 his original specimen, if it be in existence, can be re-examined. 

 The tufts on the antennae are, probably, only sexual. This rare 

 insect is in the collection of Mr. Saunders. 



Pyrestes. 



Head produced ; antennae short, laterally dilated ; maxillary 

 palpi longer than the labial; prothorax ^ubcylindrical, elongated; 

 elytra sinuated exteriorly near the shoulders, dilated posteriorly ; 

 legs short. 



Allied to Erythrus, Wh., but with a very different thorax : 

 in that genus, too, the palpi are nearly equal. 



Pyrestes eximius. (PI. XXII. fig. 3.) 

 S. niger, nitidus ; prothorace transversim striato ; elytris punc- 



tatis abdomineque coccineis. Borneo. 

 Head, thorax, scutellum and legs black ; abdomen and elytra 



