246 SERKICOKNIA. 



the antennae three fourths, or even more, of the length of the body, while in the female 

 they are stouter and but little more than half the length of the body. On the last 

 ventral segment there is a small smooth tubercle near the middle in the male, while the 

 female has an oval pubescent fovea. 



2. Entomophthalmus minutus. 



Entomophthalmus minutus, de Bonv. Mon. p. 521 \ 



Hab. Panama, Bugaba (Champion). — Beazil, Santa Catarina l . 



Similar in form to the preceding, but with the incisure of the eye much smaller. 

 The colour is piceous-brown, the head and apex of the thorax more reddish, the suture 

 of the elytra and apical third are also paler than the remainder of the surface. One 

 male specimen with the last ventral segment as in E. americanus. 



3. Entomophthalmus asper. 



Moderately elongate, very little narrowed behind, piceous-black, feebly shining, indistinctly pubescent ; head 

 and anterior border of the thorax reddish-brown : antennae piceous, subserrate, third joint very small, 

 closely applied to the base of the fourth and not easily seen ; head convex, densely coarsely punctate ; 

 eyes emarginate in a broad triangle, which does not attain the middle ; thorax nearly square, slightly 

 broader at the base than at the apex, disc convex, densely punctate, and subopaque, hind angles with a short 

 but strong carina, anterior inferior supplementary line entire, the superior line very short, posterior inferior 

 line long, nearly reaching the apical margin ; elytra obsoletely striate, tho intervals relatively coarsely 

 transversely rugose, especially near the base ; body beneath piceous, abdomen brown, moderately coarsely 

 and closely punctate ; legs ferruginous, middle and posterior femora darker. 



Length 4 millim. 



Hab. Panama, Volcan de Chiriqui (Champion). 



This is the only known species with the elytra roughly sculptured. The antennae 

 apparently resemble those of E.fugax. One male specimen has been seen, which has 

 the small tubercle on the middle of the last ventral segment. 



MICRORHAGUS. 



Microrhagus, Eschscholtz, in Silberm. Rev. Ent. iv. p. 4 (1836) ; de Bonvouloir, Mon. des Eucne- 



mides, p. 524. 

 Dirhagus, Latreille, Ann. Soc. Ent. Fr. 1834, p. 130. 

 Rhacopus, Hampe, Verh. zool.-bot. Ges. Wien, v. p. 255. 

 Aulacosternus, Motschulsky, Bull. Mosc. i. p. 116. 



The species contained in Microrhagus are, on the whole, the smallest of the Eucne- 

 midae, and from their generally uniform facies of difficult study. The industry and 

 acute observation of de Bonvouloir have produced results almost beyond criticism, one 

 point alone needing serious remark. The fovea on the last or on the penultimate ventral 

 segment is purely a female character and should not have been used in a table for the 



