332 SEEEICOENIA. 



34. IschiodontUS griseipilis. (Tab. XIV. figg. 20, 6; 20 a, antenna.) 



Yery elongate, narrow, subcuneiform, shining ; pitchy-black, the hind angles of the pro thorax and the elytra 

 castaneous, the antennae fusco -ferruginous, the legs pitchy-brown; above and beneath very sparsely 

 clothed with long decumbent cinereous hairs, the legs also clothed with cinereous hairs. Head sparsely, 

 rather finely punctate, the front triangularly depressed in both sexes, but more deeply so in the male, the 

 frontal carina very prominent, rounded anteriorly ; antennae slender, extending to the middle of the 

 elytra in the male, about half the length of the body in the female, joints 3 and 4 equal. Prothorax 

 broader than long, narrowing from the base, the sides slightly rounded in the female ; the hind angles 

 moderately produced, slightly divergent, incurved at the tip, not carinate above ; the surface finely and 

 very sparsely punctate, with indications of a faintly impressed channel down the middle. Elytra very 

 elongate, rapidly narrowing from the base in both sexes ; finely striate-punctate, the punctures widely 

 separated ; the interstices flat, each with an irregular row of widely scattered minute punctures. 

 Beneath sparsely punctured ; prosternal sutures not excavate in front ; mesosternum obliquely declivous, 

 the sides raised, separated from the metasternum by a deep transverse suture ; anterior process of 

 the metasternum convex in front ; posterior coxal plates angularly dilated opposite the point of insertion 

 of the femora. 



Length 13-15, breadth 3-3 £ millim. ( d $ .) 



Hab. Panama, Volcan de Chiriqui {Champion). 



One male and two females. This species differs from the allied forms in having the 

 prosternal sutures ungrooved in front, a character bringing it near /. aterrimus. In 

 the very elongate slender antennse and ungrooved prosternal sutures it approaches 

 Anoplischius chalcopterus ; the latter, however, has less dilated hind coxal plates. The 

 body above and beneath and the legs are conspicuously clothed with long cinereous 

 hairs. 



35. Ischiodontus erythroderus. (Tab. XIV. figg. 21, 6 ; 22, $ , var.) 



Ischiodontus erythroderus, Cand. Compt. Eend. Soc. Ent. Belg. 1878, p. lviii (Elat. Nouv. ii. p. 12) \ 



Elongate, moderately convex, shining; black, the prothorax (the apical margin excepted) rufous or flavo-rufous, 

 the under surface and antennae black, the legs black or pitchy brown ; above and beneath somewbat 

 thickly clothed with long hairs, which are blackish on the head and elytra and fulvo-cinereous on the 

 other parts of the body, the hairs along the suture and sides of the elytra sometimes fulvo-cinereous. 

 Head closely, moderately finely punctate, triangularly depressed in front in both sexes, the frontal carina 

 prominent, rounded anteriorly ; antennae extending to the middle of the elytra in the male, much shorter 

 in the female, the joints from the third broadly widened, becoming narrower outwards, 3 and 4 equal. 

 Prothorax broader than long, convex, narrowing from the base, the sides a little rounded anteriorly in the 

 female ; the hind angles strongly produced, divergent, incurved at the tip, carinate above ; the surface 

 somewhat thickly and finely punctate, deeply canaliculate behind. Elytra moderately elongate, rapidly 

 narrowing from the base in the male, more parallel in the female ; rather coarsely and deeply punctate- 

 striate, the interstices feebly convex, flat on the disc towards the base, somewhat closely punctured. 

 Beneath thickly punctured ; prosternal sutures deeply excavate in front ; mesosternum separated from 

 the metasternum by a deep transverse suture, obliquely declivous, raised behind ; anterior process of the 

 metasternum convex, horizontal ; posterior coxal plates strongly, triangularly widened opposite the point 

 of insertion of the femora. 



Var. The prothorax with a large rounded patch on the middle of the disc, extending forwards to the apex, 

 and the apical margin also, black. 



Length 9|-15, breadth 2^-3| millim. ( c? $ .) 



Hab. Guatemala x , Zapote, Capetillo, Duenas, Calderas, San Geronimo (Champion), 

 Tepan (Conradt). 



