Classification of the Coleoperons family Endomychidae. 53 



Hab. Panama : Volcan de Cliiriqui, 2,000-3,000 ft. {G. C. 

 Cham/pion). 



The single specimen of this species was not distinguished 

 by Gorham from S. pilatei, of which it has the colour and 

 size, although otherwise entirely different. It has a very 

 regular broadly oval outline, the pronotum being almost 

 exactly semicircular in shape, allowing for the emargina- 

 tion which receives the head. The raised margins are 

 very broad and only a very little narrower behind than 

 in front. The elytra are rather strongly, evenly and 

 closely punctured. The legs and antennae are slender, 

 the last six joints of the latter dark and the club loosely 

 articulated and not much dilated. 



Stenotarsus subtilis, sp. n. 



FulviiR, antennarum articulis 6 ultimis fuscis : ovalis, prothorace 

 brevi, anguste marginato, lateribus parum arcuatis; elytris crebre 

 minute punctatis, dense fulvo-vestitis ; antennarum articulo 2 

 globoso, ceteris elongatis. 



Long. 6 mm. ; lat. max. 4 mm. ' 



Hab. Panama: David, Volcan de Chiriqui {G. C. 

 Champion). 



This rather closely resembles S. pilatei Gorli., with 

 which it was confused by Gorham, but it is more broadly 

 oval and less attenuated behind, and the elytra are very 

 finely and closely punctured, without large scattered 

 punctures. The antennae have six, instead of four, joints 

 dark and all but the second joint are elongate. The legs 

 are longer in the male than in the female. 



The two insects associated by Gorham as forming his 

 genus SystaecJiea are very obviously not nearly related. 

 The figure of the second species, S. chatnpioni, does not 

 accurately represent the antennal club, which is compact 

 and rather abrupt — indeed, exactly as in Anidrytus — and 

 entirely different from that of the first species, Systaechea 

 cyanoptera. If compared with Anidrytus dolosus Gorh. 

 (from the same locality) it will at once be seen that 

 it is really a closely -alhed species of the same genus. 

 S. cyanoptera, which must be regarded as the type of 

 Systaechea, has no tangible character by wliich it can be 

 distinguished from Stenotarsus, although a rather isolated 

 species. The raised margin of the pronotum is very 



