236 JAMES WATERSTON. 



At each side of the mouth-opening are 3-4 longer bristles ; on the .mid clypeal lobe 

 4 short hyaline marginal spines, and about 6 more superiorly on or near the edge ; the 

 genae bear 2-3 submarginal rows of bristles. In life the vertex and face are probably 

 swollen. 



Antennae (fig. 1 c) length, nearly '9 mm., and '14 mm. deep on the third funicular 

 joint. Scape over four and a half times as long as broad, with large coarsely raised 

 pattern, no ventral bristles, but one subapical and subventral, and 8-9 median to 

 subdorsal, and chiefly on the apical half, on each side. Pedicel (3 : 2) three-eighths 

 of the scape, but a little broader, with the pattern of the scape. Though articulated 

 medianly or submedianly, the appearance of the funicle suggests a subdorsal insertion 

 of the joints ; the upper basal angle of the second and third joints of the funicle and 

 the first of the club swells backwardly, fitting into a dorsal apical hollow of the 

 preceding joint. The first funicular joint appears longer than it really is, being only 

 one-twelfth longer than the second ; indeed the two are equal if the dorsal swelling 

 of the second is reckoned. The joints are in the proportion 12 : 11 : 9, with corres- 

 ponding width 7 : 10 : 11 ; in the club the segments are approximately 11 : 8 : 10, 

 with breadths 18 : 16 : 11 ; the club is absolutely longer than the scape ; and a little 

 over four-fifths of the last two funicular joints together. Sensoria, in all, the first 

 funicular has 11-12 ; the second 22 ; the third 27 ; club (a) 24, (6) 19-20, (c) 12-14. 

 On the terminal sense-organ are about 10 short hyaline spines. 



Mouth-parls. Labrum with 4 (?) bristles ; epipharynx anteriorly triangular. 

 Mandibles (2 : 1) (fig. 1) with the second ventral spine very stout ; 3 bristles exter- 

 nally on the apical half, the " toe " of the cardo long and narrow ; stipes with 

 8 bristles, mainly at the side ; one on the mentum, sub-basal. Maxillary palpus 

 segmented (1 : 2), over twice as long as the labial ; 4 setigerous pustules on the 

 ligula. 



Thorax. Prothorax : pronotum when flattened out, quite straight behind, with a 

 posterior row of 22-24 bristles ; one bristle on each side, above the small semi- 

 circular spiracular emargination, much more developed. Besides the posterior row 

 there are about 90 bristles in 3-4 transverse rows ; the surface is evenly raised, and 

 there is a slight thickening at the spiracle. Mesothorax : mid lobe with 4 stouter 

 bristles inside each parapsidal furrow, 4 similar ones before the suture in a transverse 

 row ; the surface of the lobe densely set with bristles (about 150), which increase in 

 calibre posteriorly ; side lobes with 4 bristles ; axillae, 2 ; scutellum, more sparsely 

 set, 20-30 bristles, 2 posteriorly much stouter and longer. Sternopleurae, pattern 

 faint, antero-ventrally drawn out on the epimeron so that the sclerite seems covered 

 with very fine striae, coarsest and most regular on the sternum posteriorly ; 2 (1 : 1) 

 central posterior bristles, and one at each postero-lateral and antero-lateral angle. 

 The upper part of the prepectus has a distinct coarse regular raised pattern. 

 Metanotum : side-pieces with one or two transverse rugae behind, which continue 

 anterolaterally across on to the propodeon, in the region usually occupied by the 

 sulcus, as a raised shortly-ridged reticulation. 



Propodeon narrowed medianly, not wider there than the post-scutellum ; surface 

 smooth ; two strong internal rods in the position of lateral keels ; beyond them, 

 and remote from the sides, are the moderate-sized, transverse oval spiracles, a little 

 narrowed at the inner end. 



