22 



On the prothorax there is a deep and wide median chan- 

 nel, on each side of which there is a strong ridge, strongly 

 swollen laterally before the middle ; on each side of the ridge 

 there is a large irregular depression, interrupted by irregular 

 elevations, of which a few are in the shape of large slightly 

 convex granules or obtuse tubercles. The depression is 

 roughly divided into four arms, of which one becomes very 

 deep and terminates in front at the ridge margining the 

 median channel, a second is continued round the front and 

 sides so as to appear as a very irregular subapical con- 

 striction, a third opens feebly out into the median channel 

 near the base, and the fourth is continued shallowly to the 

 base where the projecting shoulder rests in it. But the 

 whole surface of the prothorax seems more or less variable, 

 although the elevations and the depressed spaces are always 

 very pronounced. True isolated granules are nearly always 

 absent. The tubercle on* the second interstice sometimes ap- 

 pears almost as if it belonged to the third. On one female 

 the ridge on the third interstice on the right side is con- 

 tinued almost to the posterior declivity. The tubercles on 

 the seventh, although fairly large, appear to be little more 

 than undulated spaces between the punctures, owing to the 

 large size of these. Each front tibia of the male is inflated 

 at the apex, with the under surface of the inflated jDortion 

 concave and covered with short, dense, black setae. 



Mythites poropteroides, n. sp. 



9 . Black ; upper surface not very sparsely clothed with 

 setae, varying from short to moderately long, and from 

 stramineous to black. Under-surface rather sparsely clothed, 

 -except for a distinct line of stramineous setae extending from 

 apex of abdomen to between middle coxae : legs rather densely 

 clothed. 



Head with three deep and wide grooves, of which the 

 median one is deeper but narrower than the others. Rostrum 

 separated from head by a deep transverse impression, with 

 a deep and wide median channel ; each side of base with a 

 short and comparatively shallow continuation of the lateral 

 groove of head. Prothorax very little wider than long, sides 

 feebly rounded : with a wide but rather shallow median chan- 

 nel, on each side of which is a curved elevation extending 

 from apex to beyond the middle ; outside of this is an irregu- 

 lar impression, with numerous large, round, slightly convex 

 granules or small tubercles, occasionally almost conjoined. 

 Elytra at base no wider than base of prothorax, but consider- 

 ably wider before the middle, thence strongly decreasing in 

 width to apex, which is rather acute; with irregular rows of 



