206 MESSRS. T. BLACKBURN AND P. CAMERON ON THE 



taceous at the base, becoming fuscous towards the apex ; 

 the rest of the insect is black. I find no very noticeable 

 difference between this species and P.facilis, Sm., in re- 

 spect of punctuation, except that the head is rather more 

 roughly punctured behind the antennae. The head is very 

 short, the distance from eye to eye across the front of the 

 base of the antennae being very considerably greater than 

 from the base of the antennae to the base of the clypeus. 

 The portion of the head behind the antennse is tumid, so 

 that the ocelli seem to be placed on a rounded swelling. 

 The apex of the clypeus is rounded. The underside of the 

 hind body is sparingly and not strongly punctured. The 

 basal joint of the antennae is rather strongly dilated in the 

 male, its length being hardly twice its width. 



A single specimen occurred on Mauna Kea, Hawaii, at 

 an elevation of about 7000 feet, in February. A female 

 taken in the same neighbourhood probably belongs to this 

 species, as its head is similarly formed, though it is less 

 roughly punctured. It is quite black, except the legs, 

 which are dark pitchy, and the wings are much clouded 

 with fuscous. 



8. Prosopis rugiventris, sp. no v. 



Niger ; obscure punctatus ; antennarum flagello apicem 

 versus ferrugineo ; abdomine plus minusve rufe- 

 scente; clypeo antice subtruncato. 



(J . Fronte testacea ; tibiis anticis dilutioribus ; anten- 

 narum articulo basali fortiter compresso, vix quam 

 latus longiore ; abdominis segmentis ventralibus 

 nitidis, inaequalibus. 



Long. S 5z-8 millim., ? 7 millim. 



The punctuation does not appear to differ much from 

 that of P. Blackburni, Sm., which this insect resembles 

 also by its scarcely less elongate head and the only slightly 



