CHALCODERMUS. 319 
5. Chalcodermus angularis, sp.n. (Tab. XVII. figg. 3, 3a, ¢.) 
Oval, shining, seneous, the elytra often rufo-piceous, with indeterminate darker markings, the antenne 
usually in part ferruginous; the elytra, legs, and under surface with scattered, rather coarse, whitish 
seales. Head closely, rugosely punctate, feebly foveate between the eyes, which are well-separated ; 
rostrum (¢) moderately stout, curved, about as long as the head and prothorax, sparsely punctate, the 
punctures seriately arranged in its basal half, (2) smoother throughout, the antenne inserted at the 
middle in the @ and much nearer the tip in the §. Prothorax transverse, parallel at the sides behind, 
and narrowed and constricted in front, the base strongly bisinuate; coarsely, closely punctate, the 
punctures towards the sides and apex here and there confluent and separated by oblique rugs, the disc 
with a more or less distinct, very narrow, smooth space down the middle limited on each side by an 
irregular row of punctures. Elytra much wider than the prothorax, gradually narrowing from the 
dentiform, laterally projecting humeri; very coarsely seriate-punctate, the interstices almost flat and 
faintly rugulose, each with a row of very minute punctures. Mesosternum depressed between the coxe. 
Metasternum transversely thickened and lamellate in front of each of the posterior cox, appearing sharply 
toothed when the insect is viewed laterally. Legs stout; femora rugosely punctate; tibia each with a 
short tooth at or before the middle and serrate thence to the sharply mucronate inner apical angle. 
Length 32-43, breadth 2-24 millim. (¢ 2.) 
Hab. Panama, Volcan de Chiriqui, Boquete, Caldera (Champion). 
Not uncommon on the slopes of the Volcan de Chiriqui. Very like C. humeridens, 
Faust, from Venezuela, the type (¢) of which I have seen; but smaller and more 
shining, the punctuation of the prothorax closer, the punctures on the elytra less 
rounded and more irregularly placed, the interstices not so flat, the vestiture coarser. 
6. Chalcodermus eneus. 
Chalcodermus eneus, Boh. in Schénh. Gen. Cure. iv. p. 388'; Horn, Proc. Am. Phil. Soc. xiii. 
p. 466°. 
9. Head with two compressed, conical tubercles between the eyes in front; antenne inserted at the middle 
of the rostrum. 
Hab. Nortu America (Mus. Brit.), Georgia and Florida ?.—Mexico !, Cosamaloapan 
in Vera Cruz (Sallé), Jalapa (Hoge), Teapa (H. H. Smith); Brivisn Honpvras, Rio 
Hondo, Rio Sarstoon (Blancaneaux); GuaTemaLa, Chiacam and San Geronimo in Vera 
Paz (Champion). 
In this species the prothorax is sometimes subquadrate and toothed or angulate at 
the sides anteriorly, and the very coarse punctuation is often absent from a space 
on each side of the disc, as well as along the middle; the seriate punctuation of 
the elytra is very coarse; and the femoral tooth is rather long, narrow, and blunt 
at the tip. Out of twenty-two specimens before me, nine (including three from 
North America) have the head bituberculate between the eyes (a character not 
mentioned by Boheman or Horn), and on dissection they prove to be females. The 
sexes of C. angulicollis differ in a similar way. 
7. Chalcodermus angulicollis. (Tab. XVII. figg. 4, 4a, 2 ; 46, ant. tibia.) 
Chalcodermus angulicollis, Fahr. in Schonh. Gen. Cure. iv. p. 384'; Faust, Stett. ent. Zeit. 1893, 
p- 365°. 
Oblong-oval, moderately shining, eneous, the elytral interstices each with one or two rows of very minute 
