ISCHIODONTUS. 321 



somewhat thickly clothed with long cinereous hairs. Head closely, coarsely punctate, the punctures 

 more or less umbilicate, the front triangularly depressed in the male, the frontal carina prominent, rounded 

 anteriorly ; antennae in the male extending to about the middle of the elytra, much shorter in the female, 

 with the joints from the third rather broadly widened, becoming gradually narrower outwards, joints 

 3 and 4 equal. Prothorax broader than long, the sides gradually converging from the base, a little 

 rounded anteriorly in the female ; the hind angles moderately produced, slightly divergent, a little in- 

 curved at the tip, carinate above ; the surface thickly, coarsely punctate, deeply canaliculate behind. 

 Elytra elongate, gradually narrowing from the base in the male, subparallel to the middle in the female ; 

 coarsely punctate-striate, the interstices feebly convex at the sides, flat on the disc, and sparsely punc- 

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

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

 Length 10£-13£, breadth 2=§-3| millim. ( c? $ .) 



Hah. Mexico (coll. Janson), Chilpancingo, Cuernavaca (II. II. Smith), Juquila in 

 Oaxaca (Salle). 



Seven specimens. The three from Juquila are reddish-brown, with the elytra 

 infuscate at the sides, these examples resembling /. marginatus in colour. In the coarse 

 punctuation of the head and thorax this insect approaches /. badius, but it differs from 

 that species in its narrow, elongate shape. The specimen in the Janson collection is 

 labelled 7. angustipennis, from which it may be known by its much more elongate shape, 

 less densely punctured thorax, and smoother elytral interstices. The more parallel and 

 narrower shape, and the more equally widened antennal joints in the male, separate 

 it from /. anceps, of which it may prove to be an extreme variety. 



9. Ischiodontus angustatus. (Tab. XIV. fig. 9, <$ .) 



Moderately elongate, narrow, rather convex, shining ; ferruginous, the legs and antennae testaceous ; above and 

 beneath clothed with long yellowish-cinereous hairs. Head densely, coarsely punctate, the punctures 

 here and there transversely confluent, feebly triangularly depressed in front, the frontal carina not 

 prominent ; antennas extending to the middle of the elytra, the joints from the third considerably 

 widened, becoming narrower outwards, 3 and 4 equal. Prothorax subquadrate, about as long as broad, 

 the sides subparallel, slightly converging in front ; the hind angles moderately produced, feebly divergent, 

 carinate above, slightly incurved at the tip ; the usual notches on the basal margin almost obsolete ; the 

 surface thickly, rather coarsely punctate, the punctures becoming slightly umbilicate at the sides, canali- 

 culate behind. Elytra three times the length of the prothorax, gradually narrowing from a little below 

 the base ; coarsely punctate-striate ; the interstices convex throughout, sparsely and rather roughly 

 punctured. Beneath thickly punctured ; mesosternum declivous ; posterior coxal plates angularly widened 

 opposite the point of insertion of the femora. 



Length 8, breadth 2 millim. ( tf .) 



Hab. Guatemala, Champerico (Champion). 



A single specimen, found on the Pacific coast at Champerico. This species resembles 

 I. angustipennis ; but it is smaller and narrower *, the punctures on the thorax are finer, 

 more scattered, and slightly umbilicate at the sides only, the elytral interstices convex 

 throughout and more sparsely punctured. 



10. Ischiodontus subparallelus. 



Elongate, narrow, moderately convex, subparallel ; pitchy-black, shining, the antennas rufo-ferruginous, the 



* It is narrower than represented by our artist. 



biol. CBNTE.-AMEE., Coleopt., Vol. III. Pt. 1, March 1895. 2 T 



