578 SEKKICOENIA. 



elongate than in the others ; this insect is labelled C. vestita, Lap., in the Salle collec- 

 tion, but it does not agree with the description of that species. 



4. Callirrhipis unicostata. (Tab. XXIV. figg.ll, e ; 12, $ ; 12 a, antenna, 2 .) 

 ? Callirhipis (Zenoa) unicostata (Guer.), Lacord. Gen. Col. iv. p. 251 nota (sine descr.) ( ? )\ 



S . Elongate, rather narrow, slightly shining ; fuscous or reddish-brown, the antennae pale ferruginous, with 

 the basal joint darker, the legs ferruginous or brown ; rather sparsely clothed with fine fulvous pubes- 

 cence. Head thickly punctured, grooved and deeply excavate in front and also deeply canaliculate on the 

 vertex, the eyes very large and prominent ; antennae with the rami on the third and following joints very 

 elongate. Prothorax broader than long, rapidly and obliquely narrowing from the basal third forwards, a 

 little dilated and rounded at the sides behind ; the surface closely punctured, deeply canaliculate, and 

 more or less distinctly foveate on either side of the disc about the middle. Elytra moderately elongate, 

 each with four costae — the first becoming more distinct towards the base and obsolete behind, the second 

 sharply raised beyond the middle and extending round to the suture behind, the third and fourth indi- 

 stinct or sometimes nearly obsolete, the second and third confluent about the middle in one specimen ; 

 the rest of the surface coarsely, subseriately punctate, the punctures becoming very coarse and deep 

 towards the base ; the disc from the middle to the apex here and there transversely wrinkled. Beneath 

 thickly, finely punctate. Legs moderately long; the basal joint of the hind tarsi as long as the following 

 two joints united. 



5 . Larger and more robust, shining, glabrous ; fusco-castaneous or castaneous, the head and prothorax 

 sometimes piceous ; above and beneath much more sparsely punctured, the punctuation of the elytra not 

 becoming coarser towards the base ; the eyes smaller and less prominent ; the antennae with the third 

 joint broadly subtriangular, the following joints shortly and stoutly pectinate, the eleventh short, not longer 

 than the tenth ; the elytra dilated beyond the middle, the second costa less raised ; the legs more 

 elongate, the prothoracic foveas deep. 



Length 10J-16, breadth 11-5| millim. 



Hob. Costa Pica, Rio Sucio, Volcan de Irazu (Rogers : $ ) ; Panama, Bugaba, Volcan 

 de Chiriqui (Champion: 6 ). — Colombia 1 . 



Five males from the State of Panama and five females from Costa Pica. This 

 insect, which possibly belongs to the species mentioned by Lacordaire 1 under the 

 name of C. unicostata, very closely resembles C. dilaticollis in both sexes. The males 

 may be distinguished from the corresponding sex of that species by the less dilated 

 thorax, the relatively shorter and more coarsely punctured elytra, with the punctures 

 becoming still coarser towards the base, and the less elongate legs ; the females by the 

 shorter and stouter pectinations of the antennae (differing in this respect from all the 

 other Central- American species), and, more especially, by the much less elongate 

 apical joint. The thoracic fovea? are shallow or indistinct in some of the males, in 

 which sex the elytra are very coarsely punctured towards the base. 



An allied form is found in the Antilles. 



5. Callirrhipis dilaticollis. (Tab. XXIV. figg. 13, 6 ; 14, $ ; 14 a, antenna, 2 .) 



J . Very elongate, rather depressed, slightly shining ; fuscous, the head and prothorax sometimes darker, the 

 legs brown or reddish-brown, with the tarsi obscure ferruginous, the antennae brownish-ferruginous, with 

 the basal joint darker ; rather sparsely clothed with fine, fulvo-cinereous pubescence. Head densely 



