336 SEKEICOENIA. 



from the allied forms. The posterior coxal plates are only feebly widened over the 

 point of insertion of the femora, and the species would be equally well placed in 

 Anoplischius. 



42. Ischiodontus alopex. 



E later alopex, Fabr. Syst. Eleuth. ii. p. 236 \ 

 Ischiodontus alopex, Cand. Monogr. Elat. ii. p. 127 2 . 

 Atractodes lutescens, Germ. Zeitschr. fur Ent. i. p. 221 3 . 



Hah. % Mexico (coll. Candeze) ; Nicaragua, Chontales (Belt). — South America, 

 Colombia, Guiana, Brazil T 2 3 . 



We have received three specimens of this variable and widely distributed species 

 from Chontales. 



43. Ischiodontus debilis. (Tab. XIV. figg. 24, 6 ; 24 «, antenna.) 



Moderately elongate, narrow, subfusiform, feebly convex, slightly shining ; brownish-ferruginous, the antennse 

 and legs testaceous ; above and beneath thickly clotbed with rather long fulvo-cinereous hairs. Head 

 convex, feebly depressed in tbe middle between the eyes, densely punctured ; the frontal carina mode- 

 rately prominent, rounded anteriorly, and slightly reflexed ; antennae slender, not half the length of the 

 body, joint 3 small, very little longer than 2. Prothorax strongly transverse, slightly flattened on the 

 disc, the sides converging from the base ; the hind angles moderately produced, very finely carinate 

 above, scarcely divergent, incurved at the tip ; the usual basal impressions almost obsolete ; the surface 

 finely, closely punctate, obsoletely canaliculate behind. Elytra moderately long, narrowing from the 

 base ; finely punctate-striate, the striae deeply impressed, the interstices feebly convex and thickly punc- 

 tured. Beneath closely punctured ; prosternal sutures deeply excavate in front ; mesosternum declivous ; 

 posterior coxal plates broadly triangularly widened opposite the point of insertion of the femora. 



Length 7|, breadth 2 millim. ( <$ .) 



Hah. Panama, Volcan de Chiriqui 4000 feet (Champion). 



Two specimens. Allied to /. alopex (Fabr.), but differing from it in being smaller 

 and narrower, and in having the hind angles of the thorax more finely carinate. 

 /. brevicollis, Steinh., from Colombia, is an allied form, but it is described as having 

 the hind angles of the thorax not carinated above. 



44. Ischiodontus limbatllS. (Tab. XIV. figg. 26, <? ; 26 a, antenna ; 26 b, 



prosternal process.) 



Moderately elongate, subfusiform, convex, shining; ferruginous or rufo-ferruginous, the elytra with a broad black 

 marginal stripe extending from the shoulder to a little beyond the middle, the base infuscate, the legs 

 and antennae testaceous : above and beneath somewhat thickly clothed with moderately long fulvous hairs. 

 Head short, convex, thickly, moderately finely punctate, the frontal carina well-defined, but not visible from 

 above ; antenna? rather short, slightly longer in the male than in the female, slender, joint 3 only a little 

 longer than 2, narrower and much shorter than 4. Prothorax convex, much broader than long, the sides 

 in both sexes rounded anteriorly and parallel behind ; the hind angles moderately produced, incurved at the 

 tip, not carinate above; the basal margin without the usual impressions; the surface sparsely and very finely 

 punctate, obsoletely canaliculate behind. Elytra narrowing from the base in both sexes, moderately long • 

 finely punctate-striate, the interstices feebly convex and sparsely punctured. Beneath somewhat thicklj' 



