ISONYCHUS. 149 



Burm., with which it agrees in the body being clothed with long hairs ; but it differs 

 from these species in the colours of the adpressed pile and in the markings of the elytra. 

 The false subapical suture of the fifth ventral segment in the female is sharply marked, 

 and the more deceptively resembles a true suture, as the greenish-ochreous coloured 

 pile abruptly ceases there, leaving the apex and the large sixth segment glabrous. 

 Three examples — two males, one female. 



4. Isonychus vittatus. 



Isonychus vittatus, Burm. Handb. der Ent. iv. 2, p. 47 l . 

 Hab. Mexico 1 . 



This species is not contained in our collections. 



5. Isonychus tomentosus. 



Isonychus tomentosus, Burm. Handb. der Ent. iv. 2, p. 48 \ 

 Hab. Mexico 1 . 

 I have not seen specimens of any species answering the above-cited description. 



6. Isonychus chiriquinus. 



Oblongus, minus convexus, obscure fuscus, subsenescens, pilis recumbentibus (nee adpressis) pallidius fuscis 

 undique vestitus, solum elytrorum interstitio 4° interdum cinereo-maculato ; clypeo antice valde angustato, 

 antice subtruncato, angulis obtusis, supra alveolato-punctato ; elytris interstitiis alternis latioribus convexi- 

 oribusque ; antennis toto fulvo-rufis ; pygidio sat dense umbilicato-punctulato. 



<S . Yentris segmentum 5 m medio angustius triangulariter planatum et declive nee denudatum. 



Long. 8-10 millim. 



Hab. Panama, Volcan de Chiriqui 2500 to 4000 feet {Champion). — Colombia, Sierra 

 Nevada de Santa Marta {ex coll. Simons). 



Five examples from Chiriqui, all males. The single example from. Santa Marta is 

 larger (10 millim.), and has more even elytral interstices. 



7. Isonychus aurantiacus. 



Isonychus aurantiacus, Burm. Handb. der Ent. iv. 2, p. 50'. 

 Hab. Mexico 1 . 



Not contained in our collections. 



8. Isonychus limbatus. 



Isonychus limbatus, Burm. Handb. der Ent. iv. 2 } p. 51 1 . 

 Hab. Mexico 1 . 



Also unknown to us. Burmeister described both the foregoing and his other Mexican 

 species from Dupont's collection. 



