ISCHIODONTUS. 319 



2. Ischiodontus pinguis. 



Ischiodontus pinguis, Cand. Monogr. Elat. ii. p. 100 \ 



Hal. Mexico \ Cordova {Salle). 



Two female specimens from Cordova in the Salle collection are labelled with the 

 above name, apparently on Dr. Candeze's authority, and I somewhat doubtfully refer a 

 male from the same locality to I. pinguis. The description was evidently taken from 

 female specimens. The Cordova male resembles the same sex of 7". anceps, but it is 

 much more parallel and has the antennae a little less elongate, the joints similarly 

 widened. /. pinguis is compared by Candeze with /. inomatus, but that insect has 

 the antennae carinate. 



3. Ischiodontus yucatecus. 



Moderately elongate, convex, shining; varying in colour from pitchy-black to brown or reddish- brown, the 

 prothorax with the hind angles ferruginous, sometimes entirely of that colour, the antennae infuscate or 

 brownish, the legs and epipleurse ferruginous 5 above and beneath thickly clothed with rather long 

 yellowish-cinereous hairs. Head closely, coarsely punctate, triangularly depressed in front, the depression 

 deeper in the male than in the female, the frontal carina moderately prominent, rounded anteriorly ; 

 antennoe about half the length of the body in the male, shorter in the female, the joints from the third 

 rather broadly widened, becoming narrower outwards, 3 and 4 equal. Prothorax convex, much broader 

 than long, narrowing from about the middle forwards, the sides subparallel behind and rounded in front ; 

 the hind angles not or feebly divergent, carinate above ; the surface coarsely, rather closely punctate, 

 deeply canaliculate behind. Elytra rather short, narrowing from about the middle in both sexes ; coarsely 

 punctate-striate, the interstices feebly convex and sparsely punctured. Beneath coarsely, somewhat 

 thickly punctate ; prosternal sutures very deeply excavate in front ; mesosternum declivous ; posterior 

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



Length 7-9|, breadth 2-2± millim. (<?$.). 



Hah. Mexico, Yucatan (coll. Jansori), Temax in North Yucatan (Gaumer) ; Hon- 

 duras (coll. Candeze). 



Sent in abundance from Yucatan. This small, convex species is allied to /. tuspanus, 

 but it is much smaller and has less elongate elytra. A very small female specimen 

 from Playa Vicente may belong to the same species ; it has the thorax canaliculate 

 along the middle to near the apex. From the North-American I.fuscus, Lee, it may 

 be known by its more transverse thorax and the rounded (not truncate) frontal carina. 



4. Ischiodontus vetulus. 



Ischiodontus velulus, Cand. Monogr. Elat. ii. p. 116 1 . 

 Dicrepidius villosus, Pilate, in litt. 



Hab. Mexico (coll. Chevrolat 1 ), Yucatan (Pilate, in coll, Janson). 



We are indebted to M. Fleutiaux of Paris for the loan of the type of this species, a 

 male, and there are two others, also males, in the Janson collection. I. vetulus chiefly 

 differs from its' allies in having the entire surface of the thorax densely, coarsely 

 punctate, and the pubescence dense and very long. The antennae are elongate, and 

 more slender than in /. ancejps and its allies. 



