300 SERBICOKNIA. 



by the very sharply carinate hind angles of the thorax. It belongs to Candeze's first 

 section of the genus, and should be placed near A. conicicollis, Cand. ; in the form of 

 the head it resembles A. ferrugineus, Cand., and in its fusiform shape A. columbicus, 

 Fleut. In two of the specimens the punctures of the inner striae are not coarser than 

 those of the interstices. The mesosternum, as in A. rubidus, Cand., has the sides a 

 little less raised than in the typical species of Atractosomus. 



5. Atractosomus cribricollis. 



Moderately elongate, sub fusiform, shining, obscure reddish-brown, the antennae and legs ferruginous ; above 

 and beneath somewhat thickly clothed with long fulvo-cinereous hairs. Head feebly convex, slightly 

 concave in front, very coarsely, densely punctate, the frontal carina prominent at the sides and flexed 

 downwards in the middle ; eyes large ; antennae extending to some little distance beyond the humeri, 

 feebly serrate, joints 3 and 4 equal in length. Prothorax broader than long, moderately convex, the 

 sides converging from the base and slightly rounded anteriorly ; the hind angles considerably produced, 

 sharply carinate above ; the surface coarsely, densely punctate, feebly longitudinally depressed in the 

 middle behind. Scutellum sparsely punctured. Elytra rather more than three times the length of the 

 prothorax, rapidly narrowing from a little below the base, the apices acute ; deeply but rather finely 

 punctate-striate, the punctures closely placed ; the interstices almost flat towards the suture, becoming 

 rather convex at the sides, each with a very irregular double series of fine submuricate punctures. 

 Beneath thickly punctured ; prosternal sutures deeply grooved in front ; mesosternum subhorizontal, the 

 sides raised ; posterior coxal plates feebly subangularly widened opposite the point of insertion of the 

 femora. 



Length 15, breadth 4|-4i millim. 



Hal. Nicakagua, Chontales (Belt, JE. M. Janson) ; Panama, Bugaba (Champion). 



Five specimens, apparently males. Closely allied to the South-American A.robustus, 

 Cand., but narrower and less robust ; the elytral striae more sharply defined and less 

 coarsely punctured ; the hind angles of the thorax less divergent, the disc not deeply 

 canaliculate behind. 



6. Atractosomus CUrticollis. (Tab. XIII. figg. 15, 6 ; 15 a, prosternal 

 process; 15 b, genitalia.) 



Moderately elongate, rather depressed, shining, brownish-testaceous, thickly clothed with long, fulvo-cinereous 

 hairs, the legs and antennae testaceous. Head feebly convex, densely, rugosely punctured, the frontal 

 carina prominent, the eyes large and rather narrowly separated ; antennae slender, feebly serrate, 

 about half the length of the body, joint 3 small, a little longer than 2. Prothorax strongly transverse, 

 the sides feebly rounded and rapidly converging almost from the base ; the hind angles considerably pro- 

 duced, acute, parallel at the apex, obliquely carinate above ; the surface finely, rather closely punctate, 

 flattened and declivous behind, without trace of median channel. Scutellum almost smooth. Elytra 

 about four times the length of the prothorax, gradually narrowing from about the basal third, conjointly 

 rounded at the apex ; finely and shallowly punctate-striate, the punctures becoming much coarser exter- 

 nally, the interstices flat on the disc, feebly convex at the sides, sparsely punctured. Beneath thickly 

 punctured ; prosternal sutures deeply excavate in front ; mesosternum declivous, but with the sides 

 triangularly raised anteriorly and vertical in front. 



Length lOf , breadth 3 millim. (6 •) 



Hab. Guatemala, Sinanja in Vera Paz (Champion), 



One male specimen. This species is almost intermediate between Atractosomus and 



