286 , SEKRICOKNTA. 



27. Chalcolepidius rodriguezi. (Tab. XII. figg. 16, s ; 17. ? ; var.) 



Chalcolepidius rodriguezi, Cand. Bull. Soc. Ent. Belg. 1886, p. lxx \ 

 Hab. Guatemala {Bodriguez l ; coll. Janson). 



There is a male example of this species in the Janson collection ; a female specimen 

 from the same collection differs from it in having a large admixture of elongate white 

 scales on both the upper and under surfaces. This difference is apparently sexual, as 

 in C. mexicanus. The male has about eight fine sharp teeth on the inner edge of the 

 anterior tibiae. C. rodriguezi is closely allied to C. mexicanus, but is less elongate and 

 less parallel, with the elytral interstices more equal in width. 



28. Chalcolepidius attenuatus. (Tab. XII. fig. 18, 6 .) 



Chalcolepidius attenuatus, Er. Zeitschr. fur Ent. iii. p. 86 a ; Cand. Monogr. Elat. i. p. 267 2 ; 

 Revis. Elat. p. 162 3 ; Bull. Soc. Ent. Belg. 1886, p. lxx 4 . 



Hab. Mexico 1_4 , Oaxaca {coll. Janson). 



There is a pair of this species in the Janson collection ; the male is figured. 



29. Chalcolepidius cuneatus. (Tab. XII. fig. 14, s .) 



Elongate, narrow, attenuate behind, black, densely and uniformly clothed above and beneath with minute 

 brownish-cinereous scales. Head densely punctured, very broadly triangularly depressed in front ; 

 antennas strongly serrate, the third joint small, very short, not half the length of the fourth, acutely 

 triangular. Prothorax much longer than broad, feebly convex ; the sides subparallel, rounded and con- 

 verging in front, and strongly sinuate behind ; the margins very narrowly reflexed ; the hind angles 

 thickened, divergent, and subacute ; the base with an obtusely bidentate median lobe ; the surface densely, 

 minutely punctate. Scutellum strongly transverse, thickly punctured. Elytra nearly twice the length of 

 the prothorax, narrowing almost from the base, with the apices conjointly rounded, the marginal carina 

 obsolete in front ; punctate-striate, the punctures deep and not very closely placed, not hidden by the 

 scales ; the interstices equal in width, almost flat, densely minutely punctate. Beneath, including the 

 whole of the fifth ventral segment, densely minutely punctate, the prosternum and the middle of the 

 meso- and metastemum smoother and almost glabrous. Propleurse not grooved in front. 



Length 22, breadth 6| millim. ( c? .) 



Hal. Mexico, Acapulco in Guerrero (Hoge). 



One male example. Closely allied to C. attenuatus, Er., but differing from it in the 

 almost flat elytral interstices, and the coarser punctures of the striae. As in that 

 species, neither the tibiae nor the tarsi are ciliate in the male. 



30. Chalcolepidius oxydatus. (Tab. XII. fig. 15, <? .) 



Chalcolepidius oxydatus, Cand. Monogr. Elat. i. p. 266 1 ; Revis. Elat. p. 161 2 ; Bull. Soc. Ent., 

 Belg. 1886, pp. lxvi, lxix 3 . 



Hal. Nicaragua (Salle), Chontales (Belt)', Costa Kica, El General, Pacific slope 

 (Pittier, in Mus. Brit.) ; Panama, Bugaba, Tole (Champion). — Venezuela x 2 3 . 



The five specimens we have received of this species are all of the male sex. They 



