EPARCHUS. 191 



This geuus was formerly separated by the relative length of the 

 fourth and third segments of the antennae, but further study has 

 shown that this character is inconsistent and untrustworthy. 



It agrees with Hypurgus in the narrowing of the last dorsal 

 set^ment, and in this and the nearly square pronotum it differs 

 from Opisthocosmia. The long tarsi and slender femora separate it 

 from Timomenus, and the subquadrate pronotum from Gordcuw 



It differs from Hypurgus in appearance, owing to the more 

 strongly convex abdomen and consequently more strongly sloping 

 and narrowed last dorsal segment of the male ; the sides of the 

 abdomen, as seen from above, are not recurved and sharp, as in 

 JJyjmrgus, but are sometimes furnished with tubercles. 



We find a totally different type of forceps ; instead of the hori- 

 zontal, rather stout forceps of Hypurgus, not contiguous at the 

 base and unarmed above, we find undulating slender branches, con- 

 tiguous at the base and armed on the upper surface with a strong 

 tooth or other projection. 



Table of Species. 



1. Forceps of S very strongly undulating ; 

 vertical tooth obsolete ; (sides of ab- 

 domen tuberculate) dux, Borni., p. 191. 



1.1. Forceps of S undulate, but gently and 



only near the base ; upper surface with 



prominent teeth or projections. 



2. Forceps of ^ with rounded clubbed 



tubercles above ; (sides of abdomen 



tuberculate) insignis, Haan, p. 192. 



2.2. Forceps of cJ with sharp tooth above ; 



sides of abdomen not tuberculate . . tenellus, Haan, p. 193. 



122. Eparchns dux, Borm. 



Opisthocosmia dux, Borm. (94) p. 895, (00^) p. 98 ; Burr, (02) 



p. 485, (04) p. 305 ; Kirby, (04) p. .39. 

 Eparchus dux, Btirr, (07^) p. 121. 



Size medium ; build slender ; general colour chestnut with 

 yellowish markings. Antennae with 10 segments, dark with a 

 pale ring before the apex. Head tumid, brown, shading posteriorly 

 to red ; depressed posteriorly. Pronotum chestnut-brown, the 

 sides paler, as broad as the head, nearly semicircular ; anterior 

 margin straight, with sharp angles ; prozona tumid, metazona 

 and sides depressed. Elytra ample, smooth, well rounded at the 

 shoulders, chestnut-brown. Wings prominent, chestnut-brown, 

 with a round yellowish spot at the base, and a little narrow yellow 

 line at the apex. Legs long and slender, clear chestnut. Abdomen 

 smooth, chestnut, strongly dilated, lateral folds very distinct ; sides 

 of fifth and sixth segments produced into a strong obtuse triangular 

 lobe ; the seventh segment has a long spine at the side, the point 



