1. H^MATOPOTA 339 



Distinguislied from //. pluvialis by the darkly marmorated wings, wholly 

 black antennse, and the smaller amount of grey dust on the basal part of the 

 more ovate basal joint of the antenna. Frons slightly widening from the 

 vertex to the antennae, more blackish grey than in the other species, with the 

 shining black callus hardly looped up about the middle, and the dull black 

 spots very close to the eyes ; upper rim of antennal pits greyish yellow ; frons 

 bearing conspicuous rather long sloping pubescence, which is pale about the 

 sides and becomes conspicuously whitish above and below the dull black spots 

 but is extensively black on all the middle part and pale again against the 

 occiput. Face whitish grey with the black spots confined to the inner upper 

 quarter and crowded and rather (or extensively) confluent there ; back of the 

 head pale ashy grey, with a dense longer more yellowish or whitish grey 

 postocular ciliation which becomes slightly longer still towards the top angles 

 of the eyes and which extends rather more down the back of the head. Palpi 

 yellowish, covered with dense whitish dust, and with a slight blackish hue 

 which is more obvious on the basal joint ; on the apical half of the outside of 

 the second joint there are a few inconspicuous black bristles but the joint is 

 mainly clothed with abundant rather conspicuous loiuier whitish pubescence. 

 Eyes (when seen sideways) rather longer than deep, and bearing rather dense 

 short pale brownish pubescence. Antennae one and a quarter times as long 

 as the head, all black without any reddish brown coloring ; basal joint 

 incrassate ovate, rather more or less than twice as long as broad, much 

 shorter than the third joint, mainly shining black but dulled on more than 

 the basal half, by blackish or dark grey dust above and inside, and bearing- 

 more numerous longer black bristles than in //. pluvialis. but with more 

 whitish hairs beneath on the basal half ; second joint dullish black, almost 

 as in H. pluvialis but not extended cap-like over the third joint; third joint 

 more equal in shape from base to tip, longer than the basal joint, and with 

 its basal constriction less obvious (unless closer to the base) and with no 

 small black bristles there. 



Thorax dull black with a very slight greyish tinge, and with three con- 

 spicuous narrow whitish grey dorsal stripes of which the middle one is the 

 narrowest and is extended almost to the liindmargin ; the next pair of dorsal 

 stripes are conspicuous clown to the suture and then after a distinct interrup- 

 tion are continued on as rather conspicuous short whitish grey spots just 

 after the suture and as very faint spots near the hindmargm ; the lateral 

 stripes which are evident in H. pluvialis are only faintly indicated in 

 H. crassicornis but are continued over the postalar calli almost to the outer 

 dorsal stripes ; pubescence sloping and not very short, whitish grey and 

 moderately equal all over but not at all dense, in fact almost sparse, the 

 erect black hairs on the praealar calli conspicuously long and erect, while 

 similar but shorter black hairs occur above the wing-base and on the postalar 

 calli ; pleurae and their pubescence almost as in H. pluvialis but both of a 

 more whitish tint, and there is often a large patch of black hairs near the 

 back part of the mesopleurae. Scutellum almost of the blackish tint of the 

 thorax, but greyish about the middle of the disc, and with longer more erect 

 and more whitish grey pubescence. 



Abdomen deep black with a slight greyish tinge which becomes more 

 evident on and after the fourth segment ; sides of the two basal segments 

 rather conspicuously pale ashy grey, and sometimes traces of ashy grey occur 

 on the sides of the third and fourth segments ; fourth and fifth segments 

 with a faint narrow ashy grey dorsal line and a pair of more or less conspicu- 

 ous ashy grey spots against their foremargins, and the third and sixth seg- 

 ments often with traces of similar spots ; sidemargins of the sixth segment 

 and liindmargin of the seventh segment rather ferruginous ; sometimes the 

 pale ashy grey markings of the abdomen are more extensive, so that the 

 sides of the third and fourth segments are widely grey as well as most 

 of the fifth to seventh segments, while the round spots may be larger 

 and a small pair may occur on the second segment, and those on the 

 third to sixth segments may be fairly large, while the seventh segment 

 may be entirely grey and the sixth almost so : there may also be traces 

 of a grey dorsal line on the third and sixth segments as well as on 

 the fourth and fifth ; the hindmargins of the second to sixth segments 



