614 RHYNCHOPHORA. 
DIAPORKESIS. 
Diaporesis, Pascoe, Ann. & Mag. Nat. Hist. (5) xvii. p. 423 (1886). 
This genus is based upon a single conspicuous species from Central America. It is 
distinguishable by its elongate form, the comparatively long prothorax, with very 
deeply bisinuate base, the oblong, oval elytra, the large eyes, strongly arcuate rostrum, 
very narrow metathoracic episterna, prominent, arcuately emarginate mesosternum, &c. 
The three Nicaraguan males before me have the anterior tarsi clothed with long 
projecting hairs, but these are wanting in all those from Chiriqui, showing that this 
character cannot always be relied upon. The males, however, may be recognized by 
the depression along the middle of the metasternum and of the first ventral segment, 
and also by the rather more closely punctured rostrum. 
1. Diaporesis distincta. (Tab. XXX. figg. 11, lla, ¢.) 
Diaporesis distincta, Pasc. Ann. & Mag. Nat. Hist. (5) xvii. p. 423°. 
Cryptorhynchus trinotatus, Jekel, in litt. *. | 
Hab. Mexico (Mus. Brit.), Toxpam in Vera Cruz (Sallé: 2); NicaRAGua (Sallé), 
Chontales' (Belt: ¢ 2); Panama, Bugaba, Volcan de Chiriqui (Champion: 3 2). 
Found in abundance in Chiriqui. Easily distinguished by the three white spots on 
the elytra—one on the disc of each near the middle and a common oblong patch at 
the apex. The dorsal spots are smaller in the Nicaraguan specimens than in those 
from Mexico and Panama. A male from Chontales is figured. 
PHACE, gen. nov. 
Rostrum arcuate, stout, not or very little longer than the prothorax, a little widened towards the base, the antennee 
(at least in the ¢ ) inserted at or beyond the middle, the funiculus 7-jointed, the club ovate ; eyes distant, 
partly covered in repose; prothorax transverse, subtruncate or feebly bisinuate at the base, more or less 
rounded at the sides, the ocular lobes feebly developed; scutellum very small or wanting; elytra not or 
very little wider than the prothorax, in the typical forms slightly constricted at the base, the tenth row 
of punctures short or evanescent (distinct to near the apex in P. striatipennis), the humeri not prominent, 
subrectangular or obtuse ; mesosternum raised, prominent, arcuately or angularly emarginate in front ; 
metasternum very short, the episterna moderately broad; ventral segment 2 longer than 3, usually as 
long as 3 and 4 united, the intercoxal process of 1 broad, the first suture more or less arcuate ; legs 
rather short, the femora unidentate or unarmed ; anterior tarsi of the males sometimes with a few fine 
projecting hairs ; tarsal claws simple ; body subovate or oblong-ovate, squamose. 
Type, P. pilimanus. 
The various species referred to this genus are closely related to Heterobothrus, Faust 
(type H. bipustulatus, from Venezuela), but differ from it in having the prothorax and 
elytra less truncated at the base and the second ventral segment much longer than the 
third. They have the general facies of an Acalles, from which they are separable by 
their rather broadly exposed metathoracic episterna. P. leucogramma and P. striati- 
pennis are somewhat divergent from the type, the others agreeing very well inter se. 
