and Central American Malachiidae and Melyridae. 69 



the shorter prothorax, and the smoother elytra. The 

 uniformly dark legs, the differently formed antennae, the 

 sulcate vertex, the longer, subaeneous elytra, and the less 

 convex prothorax distinguish A. sulcifrons from A. laevius- 

 culus; and the dark legs, smoother surface, etc., from 

 A. nigroaeneiis, Gorh. 



37. Attains atratus, n. sp. 



$. Narrow, moderately elongate, slightly widened posteriorly, 

 shining; black with a faint brassy lustre, the basal joints of the 

 antennae obscure testaceous externally, the legs piceous; finely 

 pubescent, with a few intermixed longer hairs. Head short, 

 obsoletely punctulate, feebly bifoveate in front, the eyes (as seen 

 from above) rather small and not prominent, the post-ocular space 

 very short; antennae rather short, joints 4-10 slightly longer than 

 broad. Prothorax transverse, convex, rounded at the sides, 

 faintly punctulate. Elytra a little wider than the prothorax, 

 moderately long, closely, distinctly punctate. Posterior tibiae 

 feebly curved. 



Length 2|- mm. 



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



Two females. This insect agrees with A. sulcifrons ($) 

 in colour, and in having a short head ; but the eyes are less 

 prominent, the prothorax is more convex, the elytra are 

 less inflated posteriorly and closely, distinctly punctate, 

 and the posterior tibiae are much straighter. The short 

 head, smaller eyes, straighter hind tibiae, etc., distinguish 

 A. atratus from A. nigritulus (9). 



38. Attains caraboides. 



Attains caraboides, Gorh., Biol. Centr.-Am., Coleopt. iii, 

 2, p. 120. 



(J. Anterior tarsi with the prolonged upper portion of joint 2 

 about reaching the apex of 3 ; anterior and intermediate trochanters 

 each produced into a sharp tooth, the tooth on the intermediate 

 pair long and curved, that of the posterior pair drawn out into a 

 long spoon-shaped process. 



Hab. Guatemala, Panajachel, on the Lake of Atitlan. 



The five specimens seen are all males. A shining aeneous 

 form, with the legs (the posterior femora and the apical 

 joint of each tarsus excepted), the mouth-parts, and the 

 antennae in great part or entirely, testaceous. 



