ANCHONOMORPHA.—RHECAS. 65 
series across the middle and one on each side immediately in front of the outer one,—the disc also 
longitudinally raised on either side of the middle in a line with the two median tubercles, forming two 
conspicuous ridges in front. Elytra moderately long, rather more than one-half wider than the prothorax, 
conjointly rounded at the apex, subparallel in their basal half, the humeri prominent, rounded; seriate- 
punctate, the interstices 2-7 each with scattered, large, subconical tubercles. Beneath very coarsely 
sparsely punctate. 
Length 83-10, breadth 33-42 millim. ( 9.) 
Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet (Champion). 
Five specimens. Broader than A. occulta, and with stouter tubercles on the elytra, 
the pronotum also conspicuously tuberculate and produced in front over the base of 
the head, the under surface coarsely punctate and sparsely setose. 
3. Anchonomorpha debilis, sp. n. 
Oblong-ovate, shining, black or piceous, the antenne and legs partly rufescent; clothed above with minute 
brownish scales and short sete, which are partly hidden by an earthy incrustation ; the under surface 
with a few scattered scales; the legs setose. Head and rostrum densely rugulosely punctate, the latter 
moderately stout and about as long as the prothorax, not carinate; joint 2 of the funiculus a little 
shorter and much more slender than 1. Prothorax broader than long, somewhat produced in front over 
the base of the head, constricted before the apex, the sides rounded at the middle, rapidly converging in 
front, and slightly sinuate behind, the base bisinuate ; the surface uneven, densely rugulosely punctate, 
with four conical tubercles placed in an irregular transverse series across the middle and two prominences 
at the apex. Elytra fully one-half wider than the prothorax, subparallel in their basal half, conjointly 
rounded at the apex; coarsely seriate-punctate, the interstices 2-7 with scattered oblong elevations. 
Beneath sparsely punctate; the first ventral segment broadly depressed in the middle, and the fifth 
emarginate at the apex and also slightly depressed down the centre, in the ¢. 
Length 33-4, breadth 13-13 millim. (¢ @.) 
Hab. Panama, Bugaba, Volcan de Chiriqui (Champion). 
Five specimens. This species is allied to A. tuberculifera, but it is very much 
smaller and has fewer tubercles on the prothorax, and the rostrum is not carinate. 
RHECAS, gen. nov. 
Mandibles with a tridentate, downwardly curved, acute edge; rostrum very stout, curved, the scrobes deep, 
descending to the lower anterior margin of the eye and commencing on the upperside; mentum 
transverse, placed at the apex of a long peduncle, the palpi visible ; antenn inserted near the apex of 
the rostrum in both sexes, the funiculus 7-jointed, joint 7 larger than 6; eyes lateral, transverse, not 
prominent, separated by a space equalling the width of the rostrum; prothorax and elytra closely 
articulated and truncate at the base, the prothorax deeply arcuate-emarginate at the apex beneath, the 
elytra connate ; scutellum absent ; anterior cox contiguous ; metasternum short ; ventral sutures very 
deep, the segments 2-4 convex, and 2 scarcely as long as 3 and 4 united; legs stout; femora clavate, 
concave at the apex beneath, almost unarmed; tibiz sinuous within, armed with a short claw at the 
inner apical angle, the apex oblique, ciliate on the inner and outer edges; tarsi short, not half the length 
of the anterior or posterior tibia, spongy-pubescent beneath, the third joint bilobed; body apterous. 
The single species referred to this genus has very much the appearance of an 
Otiorrhynchid, but the mandibles are formed as in the Hylobiina and the other 
characters are as in that group, with the exception of the deep ventral sutures. It is 
perhaps nearest allied to Laccoproctus, which also has the prothorax and elytra 
BIOL. CENTR.-AMER., Coleopt., Vol. 1V. Pt. 4, October 1902. KK 
