SEEEICOENIA. 66 & 



the hind angles of the prothorax, joint 2 short, about half the length of 4, 3 longer than 4 or 5, 

 the latter equal, the outer joints gradually becoming longer. Prothorax broader than long, parallel 

 in its basal half as seen from above, and arcuately narrowing in front ; densely, rugosely punctured, 

 with the interspaces raised ; the base slightly longitudinally swollen in the middle and with a smooth 

 very deep fovea on either side of this. Elytra moderately elongate, gradually narrowing from 

 about the middle ; distinctly striate, the interstices rugulosely punctate, becoming closely and very 

 distinctly granulate towards the base. Antennal grooves deep, extending to the hind angles of 

 the prothorax, about half the width of the propleural triangle. Intercoxal process of the presternum 

 gradually narrowing and ending in a laterally compressed blunt tooth. Epipleurse deeply grooved in 

 front. Eifth ventral segment abruptly narrowing from a little beyond the middle and produced at the 

 apex into a laterally compressed obtuse tooth, the entire apex very coarsely punctured. First joint of 

 the hind tarsi longer than the others united. Claws rectangularly dilated at the base. 

 Length 10, breadth 3^ millim. 



Hob. Mexico, Chiapas (M. Trujillo). 



One example. Allied to F. centralis, de Bonv., from Colombia, but differing from 

 it in having two smooth deep foveae at the base of the thorax, the epipleurse grooved 

 in front, the head with a distinct interocular carina, the body more parallel, &c. 

 Amongst the Central-American species enumerated by Dr. Horn it comes nearest to 

 F. affinis, de Bonv., from which it may be known by the less parallel prosternal 

 process, the grooved epipleurae, the distinct interocular carina, the more granulate 

 elytra, and the form of the fifth ventral segment, this being perhaps a sexual character. 



PLESIOFORNAX (p. 232). 

 Plesiofornax ligniperda (p. 234). 



To the localities given, add: — Guatemala, Cerro Zunil (Champion). 



De Bonvouloir's description appears to have been made from females only, the 

 Mexican specimen in the Salle collection being evidently of that sex. The male 

 example from Cerro Zunil differs from this latter in having the antennae very elongate 

 — the sexes differing in this respect in the same way as the closely allied P. pectoralis, 

 Horn — and the thorax much less rounded at the sides, narrowing from the base. 



Plesiofornax longicornis (p. 235). 



To the locality given, add : — Costa Rica, Volcan de Irazu (Rogers). 



A single female example of a Plesiofornax from Costa Rica probably belongs to this 

 species, described from males only, differing from them in having the antennae not 

 more than one-half the length of the body, and the thorax a little more closely and 

 more coarsely punctured. An additional male of P. longicornis has been found since 

 Dr. Horn's description was published. The female measures 14J millim. in length. 



