576 SEKKICOKNIA. 



b' . Basal joint of the hind tarsi elongate, nearly as long as the following three 

 joints united ; antennae strongly flabellate in the <$ ; prothorax narrow in 

 front, strongly dilated behind; second elytral costa curving round to the 



suture behind ; legs slender tenuipes. 



b. Legs comparatively short; the basal joint of the hind tarsi about as long as the 

 following two joints united, the next three joints subtransverse ; eyes small and 

 prominent in both sexes ; antennae strongly flabellate in the $ , pectinate in 

 the $ ; upper surface finely pubescent in the $ , indistinctly pubescent or 

 glabrous in the $ : body testaceous-red (or ochraceous) and black, varying 

 according to the predominance of the light or dark colour laportei. 



1. Callirrhipis carinifer. (Tab. XXIV. %g. 6, $ ; 6«, antenna, $ ; 7, 6 .) 



S • Very elongate, broad, robust, moderately shining ; fuscous or brown, the head and prothorax almost black, 

 the abdomen reddish-brown, the antennae, the two basal joints excepted, ferruginous, the legs brown, 

 with the tarsi obscure ferruginous ; rather sparsely clothed with fine fulvo-cinereous pubescence. Head 

 coarsely, rugosely punctate, deeply longitudinally grooved in front, the vertex also canaliculate, the eyes 

 large and prominent ; antennas with the rami on the third and following joints excessively elongate. 

 Prothorax broader than long, rapidly narrowing from about the basal third forwards, slightly dilated 

 behind and constricted at the middle, compressed in front at the sides beneath ; densely, coarsely punc- 

 tate, canaliculate from the base almost to the apex, depressed in the centre behind, and very deeply foveate 

 on either side of the disc about the middle. Elytra very elongate, widest beyond the middle ; each with a 

 strongly raised, curved, acute ridge on the middle of the disc, extending from a little before the middle to 

 the suture near the apex, and continued forwards as a faint raised line to the base, and also with indica- 

 tions of a faint raised line midway between this and the suture and another between it and the margin ; 

 the rest of the surface thickly, confusedly, rather finely punctate, with the interspaces rugulose and very 

 sparsely, minutely punctured. Beneath closely, finely punctate. Legs moderately elongate ; the basal 

 joint of the hind tarsi as long as the following two joints united. 



$ . Eyes smaller and less prominent : antennas strongly pectinate from the third joint ; upper surface almost 

 glabrous ; the elytra fusco-castaneous, with the scutellar region darker, more sparsely punctured, and a 

 little more dilated beyond the middle. 



Var. ? 2 - Antennae less strongly pectinate ; the prothorax much more sparsely and finely punctured, the sides 

 more dilated before the base (the prothorax appearing narrowed behind), the basal and apical margins 

 rufescent ; the elytra brownish-testaceous. 



Length 15-20 1, breadth 5-7 millim. 



Hab. Mexico, Cordova {Salle). 



Three specimens, including the small example doubtfully referred to the same 

 species. C. carinifer may be separated from its allies by the very acutely raised curved 

 ridge on the middle of the disc of each elytron, the ridge becoming evanescent before 

 the middle and extending round to the suture behind. The front is deeply grooved 

 down the middle, appearing bilobed when the insect is viewed from above. The 

 variety (?) has the elytra formed exactly as in the typical specimens, but in the form of 

 the thorax it resembles C. dilaticollis. 



2. Callirrhipis valida. 



c? . Very elongate, broad, robust, somewhat shining ; brownish-black, paler beneath, the abdomen ferruginous 

 towards the tip ; the antennas ferruginous, with the basal joint black, the legs brown, with the tarsi 



