54 Mr, G. C. Champion's Revision of the Mexican 



black to the anterior margin in both sexes, but the sides of 

 the front are testaceous. The discoidal black patch on the 

 prothorax is sometimes so extended as to leave only the 

 hind angles narrowly bordered with testaceous. The upper 

 surface and tibiae are set with very long bristly hairs. 



8. Attains opacipennis, n. sp. 



?. Elongate, opaque, the head shining; black, the labrum and 

 mandibles, the base of the palpi, the two basal joints of the antennae 

 externally, the margins of the prothorax posteriorly, the anterior 

 coxae, trochanters, and femora, the intermediate coxae, and the 

 lower edge of the intermediate femora, testaceous; clothed with 

 fine cinereous pubescence intermixed with long, erect, dark, bristly 

 hairs. Head broader than long, minutely punctulate, shallowly 

 bifoveate in front; antennae long, slender. Prothorax a little 

 broader than long, about as wide as the head with the eyes ; densely 

 alutaceous and minutely punctate. Elytra long, subparallel, 

 a little wider than the prothorax; densely alutaceous. Legs 

 elongate, slender. 



Length nearly 3 mm. 



Hab. Mexico {Truqui, in Mus. Brit.). 



One female. Near the Guatemalan A. plagiatus (Gorh.), 

 but much smaller, the prothorax densely alutaceous and 

 opaque, the head only shining. 



9. Attains hyssinus. 



Anthocoinns hyssinns, Er., Entomographien, p. 109; Gorh., 

 Biol. Centr.-Am., Coleopt. iii, 2, p. 115. 



Hah. Mexico [Mus. Berol.). 



Gorham was unable to identify A. hyssinus amongst 

 the Mexican material he had for examination. He placed 

 it provisionally near A. plagiatus, but it has no relationship 

 with that insect, coming near the species here described 

 under the name A. crux-nigra. A co-type ($) of Erichson 

 is now before me. It has the head black, densely punctu- 

 late, and broadly excavate in front; the antennae long, 

 comparatively stout, the two basal joints testaceo-maculate ; 

 the prothorax rather broadly and abruptly testaceous at 

 the base, for the rest black; the elytra moderately long, 

 subparallel, wider than the prothorax, not nearly covering 

 the abdomen, shining, violaceous (a narrow testaceous 



