254 JAMES WATERSTON. 



Mouth-parts : labrum long, with 6-7 bristles on upper distal edge and 2-3 below 

 medianly ; mandibles (fig. 8 b) short, thick, triangular, bidentate ; stipes with a 

 coarse scaly reticulation, the transverse walls of the cells distinctly raised, the others 

 faint ; one bristle behind the palpus ; two (minute) at the sides. Palpus, G : 11 : 9 : 23, 

 measured along the outside edge, with a width of 8 on the fourth joint ; joints 1 and 2 

 bare ; one minute bristle opposite the insertion of the palpus ; mentum with 7 

 bristles ; labial palpus, 9:7: 15, with a uniform width of 7. ' Antennae (fig. 8 d) 

 9-jointed ; scape, pedicel, ring-joint, five in funicle. and solid club ; length, '5 mm. ; 

 bulla minute ; scape (■") : 1 ) spindle-shaped, broadest medianly, longer than the pedicel 

 and funicle combined, and one-half as long again as the club ; all the funicular joints 

 are transverse, and the widtlis of the first funicular, the fifth funicular and the club 

 are in the ratio 3 : (5 : 7. Sensoria : fourth funicular, 1-2 ; fifth, 5-6 : club, three 

 rows of 8, 7, 5 ; between these rows there is a dorsal thickening of the chitin which 

 may be the vestiges of the original sutures of the club segments. 



Thorax dorsally flat and level. Prothorax more weakly chitinised on its lateral 

 angles, Avhere the pattern becomes faint and transverse ; about 12 bristles in the 

 posterior row, and 2-3 minute ones in front of the stigma : over 20 miiuite scattered 

 bristles on each side of the mid line. The pronotum appears superiorly only as n 

 narrow anterior edge to the mesonotum : the greater part of the sclerite being 

 perpendicular ; presteriuini transverse, diamond-shaped, and thinly chitinised. 

 Mesonotum with the parapsidal furrows thick, meeting the suture i)iside the lateral 

 angle of the axillae : the suture very straight : abscissa of the axillae to the abscissa 

 of the parapsidal furrows, as 17 : 15. The scutelluni is broader than long (13 ; 11) 

 and longer than the mid lobe (21 : 17). wliose length (four-sevenths of its breadth) 

 equals exactly the distance between the axillae. The thorax is particularly heavily 

 chitinised, and the reticulation seems to be worked into the integument rather than 

 to lie superficially : the notal surface is fairly .--niooth, except on the scutellum, 

 where the pattern is raised, chiefly longitudinally, so that 8-l<t short heavy striae 

 appear behind the suture : the pattern is rather fine on the pronotum, side lobes and 

 axillae, and about equally coarse on the mid lobe and scutellum. The mid lobe bears 

 30-40 minute bristles, the side lobes 9. the axillae about the same : scutellum with 

 about 10 bristles on the disc on each side of the mid line, with a marginal row of about 

 12 stronger ones above the metanotuni, of which 3-4 on each side of the apex rise from 

 distinct punctures. Prepectus small, triangular, and smooth ; there is a sharp edge 

 (a false suture) between the ventral and pleural parts of the sternite ; the former, 

 owing to the backward displacement of the presternal parts, lies considerably in fi'ont 

 of the latter for one-third of its length, the prepectus being thus somewhat isolated. 

 The sternum ventrally is trapezoidal, with a regular, bold, but not very large pattern ; 

 4-5 bristles on each side postero-laterally, and a large hyaline spot at the posterior 

 end of the well-defined middle ridge ; episternite small and smooth : the pleurae 

 somewhat flat and elongate, divided indefinitely into an upper (epimeral) and a lower 

 (sternal) portion. The anterior half of the epimeron is nearly smooth, while a large 

 striate reticulation covers the rest of the sclerites ; the epimeron is produced into a 

 minute but decided tooth at one-third its length, above the coxa. Metanotum and 

 propodeon together, broad and short, markedly declivous about the mid-line ; post- 

 scutellum lying below the posterior edge of the scutellum, not carinate, but ridged 



