1. XYLOPHAGUS 249 



greyish pubescence whose roots cause a very sparse punctuation ; metanotum 

 very large, shining black but a little dulled about the sides except on most of 

 their front part, and with a faint yellowish line across just before this duller 

 part, and on and about this yellowish line there is a sparse pale grey 

 pubescence. 



Abdomen tubular, more than twice as long as but distinctly narrower than 

 the thorax and scutellum together, almost parallel-sided and ending rather 

 1 )luntly ; it is composed of seven segments of which the basal one is not quite so 

 long as any of the next five and scarcely as long as the seventh, and it is shining 

 black though occasionally the hindmargins of the second to fifth segments 

 are indistinctly yellowish, and the abdomen bears all over equal fairly con- 

 spicuous decumbent greyish white pubescence which is abundant but by no 

 means dense and which is longer and more erect about the basal corners. 

 Belly usually continuing to form the abdomen into a tubular shape for at least 

 the_ four basal segments while the fifth and sixth segments may flatten up 

 against the dorsal plates, though sometimes all the ventral plates flatten up 

 against the dorsal plates or all may appear to form the tube, but in all cases the 

 dorsal plates overlap at the sides and form an overhanging margin ; hind- 

 margins _ of the segments inconspicuously brownish yellow, or in case the 

 dorsal hindmargins are obscurely yellowish then the ventral ones are more 

 conspicuously yellow. Genitalia formed by an apparent dull blackish brown 

 eighth segment which is shorter than the seventh, and the upper part of 

 which forms a large cap covering the lower lamellae, and against the outer 

 corners of this a pair of bright reddish orange rather short thick lamellae can 

 be seen, and when seen from below a pair of large broad ovate dull blackish 

 brown side lamellae are visible and bear rather dense decumbent minute 

 grey pubescence, while before them right against the seventh ventral segment 

 lies a small transverse ovate basal middle piece ; these side lamellae and the 

 basal piece often bear chestnut reflections. 



Legs, including coxae and trochanters, usually clear pale orange but 

 sometimes rather darker orange ; marginal tip of the trochanters black 

 beneath ; hind femora blackish at the tip on the upper side, and the hind 

 tibiae brownish or brownish black on the apical half or less ; two last joints of 

 anterior tarsi blackish (at least above) and usually the tips of the other joints 

 darkened, while on the hind tarsi the apical quarter of the basal joint and apical 

 half of the second joint are usually darkened and the three end joints 

 may be blackish or at least darkened ; front coxae long and narrow, gradually 

 diminishing in size, and bearing rather abundant short depressed pale yellow 

 pubescence ; posterior coxae rather darker orange, shorter and stouter ; hind 

 coxae shining black at the base ; front femora stouter and shorter than the 

 others, but the middle pair thin and long, and the hind pair thin and very 

 long but very slightly thickened on the apical half ; tibiae all long and thin, 

 especially the hind pair- pulvilli greyish yellow, claws black. Front tibiae 

 with one fairly long yellow spur, middle pair with two rather long yellow 

 spurs, and hind pair with two spurs as long as those on the middle pair but 

 usually rather obscured in coloration. Pubescence of the legs almost imper- 

 ceptible, very minute, adpressed, and pale yellow. 



Wings (fig. 182) slightly greyish hyaline, with the base and the veins there 



Fig. ISi.^Xijloiihiigus atcr £. x 10. 



pale yellow, but with a dark stigma and clouded cross-veins, and the other 

 veins blackened and conspicuous ; stigma long and blackish or blackish brown, 

 extending from the tip of the mediastinal vein to the tip of the radial, 

 and making all the end of the subcostal cell black or blackish brown, and 



