and Central American Malachiidae and Melyridae. 77 



Hab. Mexico, Northern Sonora. 



Described by Gorham from a single pair, one male and 

 two females having subsequently been detected amongst 

 Morrison's captures. This insect has the head and pro- 

 thorax black, the latter with a rufo-testaceous patch on 

 each side at the base, this colour in one example extending 

 to the whole of the prothorax ; the elytra shining, blue or 

 bluish-green; the basal joints of the antennae externally, 

 the anterior and middle trochanters, and the base of the 

 anterior femora beneath in (^, testaceous ; the pubescence 

 fine, and intermixed with long, semierect, bristly, dark 

 hairs; the anterior tarsi in ^ (said to be 4- jointed when 

 viewed from above) distinctly 5-jointed, the three basal 

 joints stouter than in the female, the second not lobed 

 above. The last-mentioned tarsal character distinguishes 

 A. coelestinus from all its alhes, except A. mexicanus, and 

 brings these two forms near Tanaops, Lee. In one of the 

 two males seen the elytra appear to be compressed and 

 subacuminate at the apex, but this is probably due to 

 shrinkage after death, the specimen being immature. 



52. Attains mexicanus. 

 Attains mexicanns, Pic, L'Echange, xxvi, p. 5 (Jan. 1910). 



Moderately elongate, widened posteriorly, shining, the elytra 

 duller; black, the basal joints of the antennae externally, the 

 prothorax at the sides and base or entirely, and the anterior and 

 intermediate legs in great part in both sexes testaceous, the elytra 

 nigro-violaceous or greenish, sometimes with the disc indetermin- 

 ately testaceous towards the apex, the posterior tibiae and tarsi 

 piceous; finely cinereo-pubescent, and also set with scattered 

 semierect bristly hairs. Head transverse, broad in cj, narrower in 

 9, closely, minutely punctulate, the front transversely depressed, 

 the epistoma flattened; antennae moderately long, more distinctly 

 serrate in cJ than in $. Prothorax transverse, minutely pimctulate. 

 Elytra moderately long, more widened posteriorly in J than in $, 

 separately rounded at the apex, densely, minutely pimctate. Legs 

 elongate, rather slender ; the basal joint of the anterior tarsi rather 

 long in both sexes. 



cJ. Anterior tarsi with jomts 1 and 2 oblique, a little shorter than 

 those following, as seen in profile, 2 much shorter than 1 and not 

 lobed above, 3 and 4 smaller and subequal. 



Length 2|-3i mm. (cj$.) 



