HYPODESIS.— CAEDIORHINUS. 495 



sides behind. Head very coarsely, irregularly punctate, flattened in front ; antennae extending to a little 

 beyond the hind angles of the prothorax in the male, shorter in the female, the joints from the fourth 

 strongly serrate, 3 as long as, but narrower than, 4. Prothorax much broader than long, flattened on the 

 disc and narrowing from the base in the male, more convex and rounded at the sides anteriorly in the 

 female; the hind angles long and strongly divergent, carinate; the surface coarsely, rather sparsely 

 punctate, the punctuation becoming closer towards the sides and apex, much finer and sparser on the disc 

 in the females, sometimes obsoletely canaliculate and with indications of a narrow smooth space down the 

 centre at the base. Elytra from three and one-quarter to three and two-thirds the length of the prothorax, 

 gradually narrowing from about the basal third, more parallel in the female in one specimen ; very finely 

 punctate-striate, the punctures not very closely placed, becoming coarser towards the sides, the striae 

 obsolete on the disc in some specimens and on the basal declivity deeply impressed, the interstices flat 

 and sparsely, very finely punctate. Beneath sparsely and finely, the prosternum and propleurae coarsely, 

 punctured, the ventral segments each with a large space at the sides impunctate, the prosternal process 

 also impunctate along the middle ; the suture between the meso- and metasternum obliterated in the 

 centre. 

 Length 13|-16, breadth 4-5 millim. ( 6 2 •) 



Hah. British Honduras (coll. Janson) ; Guatemala, Senahu and Purula in Vera Paz 



(Champion). 



Five specimens, four of which are from Guatemala. This insect is not closely allied 

 to any of the other members of the genus, from all of which it may be known at a 

 o-lance by the large glabrous impunctate space at the sides of each of the ventral 

 segments. The pubescence is long, fine, and sparse, and easily abraded, two of the 

 specimens appearing to have the elytra almost glabrous. The punctuation of the thorax 

 is much coarser and closer in the males than in the females ; the latter have the 

 elytral stria? almost obsolete on the disc, and the interstices very sparsely and minutely 

 punctate. The tufts of whitish hairs at the sides of the ventral segments are con- 

 spicuous from above. 



Group CARDIORHINI. 



CARDIORHINUS. 



Cardiorhinus, Eschscholtz, in Thon's Archiv, ii. 1, p. 34 (1829) ; Candeze, Monogr. Elat. iv. p. 247. 

 The thirty-six described species of this genus are all from South America, one of 

 them being found as far south as Buenos Ayres. A single species is now added from 

 our region. 



1. Cardiorhinus binotatus. (Tab. XX I. fig. 27, $ .) 



Elongate, rather narrow, shining, very sparsely and finely pubescent ; above testaceous, a narrow stripe down 

 the centre of the prothorax, and a small rounded or oblique spot on the outer part of the disc of each 

 elytron at the middle, black ; beneath ferruginous. Head coarsely and closely umbilicate-puuctate ; 

 antennse nearly reaching the hind angles of the prothorax, joint 3 as long as 4. Prothorax moderately 

 convex, a little longer than broad, rounded at the sides anteriorly ; the hind angles long and stout, 

 strongly divergent, incurved at the tip, and sharply carinate ; the surface sparsely, coarsely punctate, the 

 punctuation becoming excessively coarse, umbilicate, and crowded towards the sides and sparser and. finer 

 at the base, deeply canaliculate behind. Elytra three times the length of the prothorax, flattened on the 



