I 



3. ANTHRAX 523 



sides, besides several cinnamon scales scattered amongst the black ones ; 

 third segment with cinnamon scales more about the margin of the white 

 band and behind that to the hindmargin ; fourth segment similar, but with 

 the cinnamon scales rather more numerous ; fifth segment black haired, but 

 with numerous conspicuous cinnamon scales forming a band on the hind- 

 margin ; sixth segment similar, but with the cinnamon scales more numerous 

 than the black ones, and with a conspicuous small patch of white scales on 

 the middle ; seventh segment nearly all clothed with coarse white scaly hairs, 

 Init with black hairs at the basal corners ; longer inconspicuous erect black 

 hairs occur all over the abdomen, and a few very fine pale hairs occur mainly 

 on the white bands ; marginal pubescence of the abdomen long and white on 

 the basal segment and on the extreme base of the second, but long coarse 

 shaggy and conspicuously black on the rest of the second and on all the third 

 segment, then shorter more depressed and nearly all white on the fourth 

 segment, and black again on the fifth and sixth segments and denser and 

 more consiiicuous than the white pubescence of the fourth segment, and 

 white on the last segment except at the extreme basal corners. Belly 

 greyish black, but all the hindmargins broadly obscure orange ; seventh 

 segment all orange, and the eighth (or genitalia) black with orange margins ; 

 but sometimes nearly all the fourth and fifth segments are orange, or even 

 the third, fourth, and fifth segments except at the basal margins of the 

 fourth and fifth ; pubescence abundant, dark orange, closely adpressed, 

 almost scaly ^ the scaly hairs at the sides of the third and fourth segments 

 inconspicuously whitish at the sides for the full depth of the segment, but 

 sloping away on the lower side until they die out before reaching the middle 

 third of the segments, and traces of similar whitish hairs exist about the 

 sides of the hindmargins of the fifth and sixth segments ; a few inconspicuous 

 long erect black hairs are scattered all over as on the upi^er side, and inter- 

 mingled with them are a few similarly long and thin pale hairs ; the actual 

 margin of the dorsal plate (commencing with the tuft of bright tawny hairs 

 with white tips on the lower part of the metapleurre) has its pubescence 

 long clear white on the second segment, shorter and tawny on the third and 

 fourth, mainly black on the next three but tawny at the basal corners, and 

 pale yellow round the tii). Genitalia mainly concealed, but a pair of sub- 

 quadrate lateral plates can be detected. 



Legs dull black, but all the tibiai reddish orange except rather obscurely 

 about the tip of the front i)air ; tip of the front femora behind and almost 

 the apical third of the middle pair behind obscurely reddish orange, and the 

 l)ase of the posterior tarsi sometimes slightly reddish • front coxa? long, with 

 mainly shorter adpressed tawny pubescence, and with longer black hairs 

 intermixed with a very few pale ones ; posterior coxai mainly with longer 

 erect black bristly hairs and some shorter orange cues, especially at the base 

 towards the outside ; all femora and the posterior tibite densely covered with 

 closely adhering shimmering elongate golden scales ; front tibiae with a few 

 similar scales which however do not extend to the tip ; anterior femora 

 with rather sparse thin inconsi)icuous short black pubescence behind. Front 

 femora and tibiis with no strong l)lack bristly hairs, and the front tibite with 

 no trace of spicules or spurs ; tibiae distinctly longer than the tarsi ; tarsi 

 slightly tapering, with no long " touch-hairs " or spicules though bearing a 

 peculiar erect short sparse pubescence both above and beneath. Middle femora 

 with a row of about five black bristles on the middle part beneath but with 

 the end ones tending towards the upper side ; middle tibiae with four rows of 

 similar but smaller bristles (5-7 in each row) and with a circlet of spurs ; 

 hind femora with a row of about nine black bristles beneath and with three 

 or four more antero-dorsal near the tip ; hind tibias with several rows of 

 numerous (6-10) bristles and with a circlet of spurs ; posterior tibiae aboutas 

 long as their tarsi. Pulvilli absent ; front claws black, very small ; posterior 

 claws fairly long, very little curved and with an indication of a tooth at the 

 obscurely orange base ; empodium absent or exceedingly minute. 



Wings on the basal two-thirds dark brown interspersed Avith hyaline spots, 

 and with the apical third and all the hindmargin irregularly and unequally 

 hyaline ; the apical end of the brown colour ends in two steps, i.e., not 

 in one continuous slope] the first of the four "window" spots runs 



