148 RHYNCHOPHORA. 
4, Auleutes cavisternum, »p. n. 
Short ovate, dull, black, the anterior margin of the prothorax, and the legs in part, ferruginous; the vestiture 
very fine, brownish and cinereous (in great part abraded), Head rugulosely punctate; rostrum stout, 
arcuate, about as long as the prothorax, rugulosely punctate and also carinate. Prothorax constricted 
and much narrowed in front, densely, rugulosely punctate, the dise nodose and with two short, curved, 
prominent ridges, the space between them depressed, the lateral tubercles prominent, the anterior margin 
notched in the centre. LElytra deeply punctate-striate, the interstices rugulose, the alternate ones raised, 
the others somewhat convex. Meso- and metasternal excavations deep, limited on each side by a 
conspicuous ridge, the cavity in the metasternum reaching to the middle and open behind. Fifth 
ventral segment transversely depressed in the middle. Legs short, intermediate tibie unguiculate at the 
inner apical angle. 
Length 12, breadth 14 millim. (<¢.) 
Hab. GuaTEMALA, San Juan in Vera Paz (Champion). 
One specimen, in bad condition. The short, acute ridges on the disc of the 
prothorax, the raised alternate elytral interstices, and the long, deep rostral canal 
distinguish A. cavisternum. The elytral suture appears to have a greyish streak at 
the base. The posterior femora are a little less incrassate, and the humeri more 
prominent, than in Hypoceliodes obliquus, which is otherwise very like A. cavisternum. 
5. Auleutes instabilis, sp.n. (Tab. IX. fig. 2, 2.) 
Short ovate, moderately shining, black, the antennex, apical margin of the elytra, knees, tibie, and tarsi more 
or less ferruginous ; the vestiture very fine and sparse, brownish and white intermixed, the elytra with 
scattered coarser white scales, which are usually concentrated into a transverse, narrow, curved, inter- 
rupted fascia on the outer part of the dise at about the middle and a few small spots. Head and rostrum 
rugosely punctate, the latter stout, arcuate, and in some specimens reaching far beyond the middle coxe. 
Prothorax constricted and much narrowed in front, coarsely punctate, the disc faintly sulcate and without 
prominences, the lateral tubercles sharp. Elytra deeply punctate-striate, the interstices convex and finely 
asperate. Metasternum arcuato-emarginate, the excavation very deep, closed behind, and sometimes 
extending to the middle. Intermediate tibies feebly unguiculate at the inner apical angle in the ¢. 
Length 2-23, breadth 1j-1? millim. (¢ 2.) 
Hab. Muxtco (Truqu?, in coll. Fry), Chilpancingo, Teapa (ZH. H. Smith); Guatemaa, 
San Isidro (Champion) ; Panama, Bugaba (Champion). 
Hight specimens, varying in the length of the rostrum and rostral canal, and in the 
disposition of the coarser scattered white scales on the elytra, these being usually 
condensed into small spots and sometimes into a short streak at the base of the suture. 
The simply convex, non-tuberculate disc of the prothorax, &c., separates A. instabilis 
from A. sulcifrons. The deeply excavate metasternum distinguishes it from the other 
similar forms. 
6. Auleutes inspersus, sp. n. 
Short ovate, black or piceous, the antennew, and the legs wholly or in part, ferruginous; the vestiture fine, 
brown and white intermixed, the white scales on the elytra condensed into irregular, interrupted, 
undulate fascie. Head rugulosely punctate, carinate on the vertex, the eyes rather prominent ; rostrum 
comparatively slender, feebly curved, reaching as far as the posterior margin of the middle coxa, 
rugulosely punctate and obsoletely carinate in the ¢, much smoother and shining in the 2. Prothorax 
