6. STRATIOMYS I53 



and do not form so true a triangle ; the yellowish spot at each side of the 

 lace IS more extended triangularly towards the mouth ; the pubescence of the 

 face jowls and back of the head is yellower, and on the frons sometimes 

 all black down to the antennae; back of the head below only slightly 

 inflated and with a narrow pale brownish yellow postocular rim, on which 

 towards the middle is a minute shimmering brownish yellow or even almost 

 silvery tomentum. Eye-facets sharply divided by a straight line into large 

 ones above and smaller ones below, and this division extends across the eve 

 a little below its middle almost but not quite to the back of the eye where 

 the smaller facets trend upwards. 



Thorax, pleurae, and scutellum with rather denser, longer, and darker 

 pubescence, which sometimes has a tendency to form a tawny patch iust 

 above the middle of the disc of the thorax. Scutellum yellow or reddish 

 orange with a black line all across its base which becomes rather narrow at 

 the sides. 



Abdomen not so much flattened towards the margins, and duller deeper 

 black ; the basal pair of yellow spots form sharply defined triangles which 

 have one side on the sidemargin (so that the shoulders are hardly at all 

 orange) and one on the hmdmargin ; on the third segment the long narrow 

 yellow side-spots run along the hindmargin and end pointed and separated 

 from each other by morethan the length of each spot, but rather nearer each 

 other than the basal pair of spots ; the fourth segment has an entire dull 

 orange band all along the hindmargin which, at its widest part, occupies about 

 one-htth the length of the segment, but is narrowed slightly on each side of 

 the middle and near the sides ; fifth segment with a semicircular or sub- 

 triangular yellow spot on the whole of the hindmargin and arching up to 

 about the middle of the segment, and then abruptly and rather narrowly 

 extended_ upwards at its middle towards and sometimes quite up to the 

 loremargin ; pubescence of the second and third segments on the disc shorter 

 and less abundant and more blackish. Belly yellow ; basal segment black • 

 second segmeiit with a pair of long narrow black spots against the foremargin 

 which are well separated at the middle but nearly reach the sides • third 

 segment with a pair of much larger black spots (about one-third the 

 length of the segment) on the foremargin which are near together at the 

 middle and which almost reach the sides; fourth segment with a slightly 

 narrower entire black band against the foremargin which is rather widened 

 at the middle and at just the ends but which is hardly connected with the side- 

 margins ; hfth segment with a rather similar entire black band on the fore- 

 margin,^ which IS however more pointed at the sides and is hardly extended 

 to the sides ; sometimes all these belly-bands extend to the sidemargins for 

 tlieir lull width ; actual sidemargins less yellow than in ,S'. chamcdeon at the 

 Jiincl corners of the third, fourth, and fifth segments ; pubescence glistening 

 and depressed but very short and inconspicuous, very distinct from the lono- 

 pubescence of S. chamcdemi. 



Legs very similar to those of ,S'. chamrfleon, but the whole of the pu- 

 bescence IS more orange. 



Wings very similar, but perhaps slightly paler on the foremargin and the 

 base, llioracal squama? dark brown with still more dense long tangled pale 

 brown conspicuous pubescence all over. 



? . Mainly agreeing with the male, but differing from the female of .S'. chamceleon 

 by liavmg the frons all shining black down to the level of the top of the 

 antennal prominence ; frons punctate and bearing inconspicuous tmy black 

 nristles and also some inconspicuous grey pubescence, or even blackish grey 

 pubescence about the middle ; black middle line of the face rather narrower 

 and the sides reddish orange ; the reddish orange or yellow postocular collar 

 IS ratner narrower and is not obviously widened about the middle, and only 

 extends upwards far enough to allow the black back of the head to connect 

 at tun width with the black frons ; the collar is wider at the back than on its 

 upper side (fig. 133). 



Thorax shining black, with very short coarse mainly blackish grey 

 pubescence on all the disc mixed with longer (though still short) fine pale 

 yellow hairs, especially about the suture and the sides, and forming a pair of 



