216 



[September, 



coxal cavities, its sides and apex finely bordered. Anterior border of the meta- 

 sternuiu pri)duced in the middle line into a ^mall rectangular process which 

 meets the mesosteriial process. Middle coxae narrowly separated. All the 

 tarsi 5-jointed. Anterior tarsi with the first three joints strongly dilated, 

 densely spongy-pubescent on the plantar surface, the 4th joint small, concealed 

 from below by the 3rd, the oth joint slender, elongate ; claws simple. Anterior 

 tibiae stout, their posterior margin densely clothed with stiff black pectinations, 

 the anterior margin with a blunt tooth at the level of the junction of the 

 anterior and middle thirds. Middle tibiae with two or three spines on 

 the external border. Middle tarsi with the 1st joint very long, as long as all 

 the following joints together, the 2nd much shorter, the 3rd half as long as the 

 2nd, the body of the 4th not half the length of the preceding, but extended on 

 the plantar surface into a narrow process, which reaches the middle of the 5th 

 joint, the latter elongate and equal in length to the three preceding joints 

 together. Posterior tibiae and tar.si exactly similar in structure to the inter- 

 mediate ones. Elytral epipleura complete, not extending beyond the level of 

 the posterior margin of the metasternum, and with a fine raised line for the 

 posterior three-fourths, parallel to the inner edge. Abdomen pointed, the first 

 visible dor.sal segment only narrowly bordered. 



Fig. 1. — Parts of mouth of Exvconosoma elegans : A, Tongue ; B, Labium ; 



C, Mentura ; D, Paraglossa ; 1, 2, 3, Labial palpus. 

 Fig. 2. — Maxillary palpus of same : 1, 2, 3, 4, the four joints. 



Both figures from Camera lucida drawings with 1" objective. 



The species on which this genus is founded has the facies of a 

 much-enlarged Conosoma, to which it would appear to be related. It 

 is here taken as the type of a new Group, the Euconosomini. 



Euconosoma elegans, n. sp. 



Robust, convex, pointed posteriorly, rather shining, testaceous-yellow, a 

 large round sp >t extending from the anterior nearly to the posterior margin of 

 the thorax, the elytra (except the suture and the middle of the base), a central 

 spot on the 4th, the whole of the oth and 6th (except the extreme posterior 

 margins), the base of the 7th, and the w^hole of the 8th dorsal segment, black. 



