3. CHRYSOPS 425 



mouthmargin ; pubescence of the face consisting of rather long black hairs, 

 which leave most of the protuberant shining black facial calli bare, as well as 

 the middle portion of the face and the upper mouthmargin, though even on 

 Darts of these a very few black hairs exist ; on the jowls and right across 

 )ehind the mouth there are numerous longer yellowish hairs ; back of the 

 lead black, flush with the eyes but hollowed out behind, and with a 

 very short close black postocular fringe ; vertex dull black, elevated, and 

 bearing rather abundant black pubescence ; frons small, triangular, quite bare, 

 rather shining black with a greyish brown foremargin which extends all 

 round the base of the antennae and joins the yellowish middle line of the face, 

 while a yellowish line extends down the extreme eyemargin to the large 

 yellow patch below the facial calli. Proboscis brownish black, shining on the 

 sucker-flaps, and bearing very short pubescence except for a few hairs beneath 

 each sucker-flap ; palpi dull black, rather shining, elevated at right angles to the 

 proboscis and bearing rather dense black hairs, about half as long as the 

 proboscis and slightly dilated about the middle. Eyes quite bare, touching 

 for less than the middle third of the distance between the occiput and the 

 antennae ; facets on the larger upper part dilated and purplish brown in 

 death, but on the smaller lower part small and blackish, the dividing line 

 being not shari:)ly defined and running across semicircularly 

 so that the small facets extend a long way up the back part ; 

 eyes (fig. 241) in life vivid green, with coppery reflections 

 varying according to the light but most evident about the 

 lower part ; the blackish purple middle spot is triangular 

 with a flat upper margin, and between it and the foremargin 

 but slightly higher up is a smaller second subquadrate spot, 

 and on the hindmargin level with that second spot is the 

 point of the usual emargination from the hindmarginal band ; 

 tielow the second spot is the usual lower spot which is 

 moderately large and subquadrate ; the first two spots ^^°cmutiens'^'s^°^^^ 

 mentioned above have peculiar streaks extending upwards, Left eye in life, 

 as directly but considerably above the middle one is a 

 brownish purple spot with a reddish margin which is continued downwards 

 in a rather vague reddish stripe which attenuates but faintly reaches the 

 middle eye-spot, and a similar rather vague reddish stripe exists above 

 the front spot ; lower margin of the eye blackish purple and this colour 

 extends up the hindmargin to the place where the usual emargination is con- 

 spicuous ; the upper slope of the projection above the emargination has a 

 reddish edge. Antennae (fig. 238) dullish black, basal joint longer and stouter 

 than the second, and both bearing abundant rather long black pubescence, 

 which is, however, slightly longest on the basal joint ; third joint subulate, 

 obscurely annulated, longer than the two basal joints together, rather 

 upturned at the tip, and without any trace of an apical style ; antennae 

 nearly twice the length of the head. 



Thorax and scutellum black, moderately shining. Pubescence tawny but 

 varying to black, not scarce but not obscuring the ground colour at all on the 

 disc ; a patch of rather long black hairs extends on each side from the humeri 

 almost to the wing-base, and the pubescence on the thorax near this patch is 

 more dense and is conspicuously tawny or blackish tawny ; on the upper and 

 (especially) back part of the mesopleurse there is a dense very conspicuous 

 tawny patch of long shaggy hairs, and a similar patch is almost equally con- 

 spicuous on the metapleurae, but below these patches the pleuras are slaty 

 black and bear only very scattered yellowish hairs. 



Abdomen dull black, with the sides of the two basal segments rather 

 narrowly luteous, the luteous coloring on the second segment being the more 

 conspicuous (though still sometimes obscure) on an eighth to a fifth of the 

 segment on each side. Pubescence longest and most dense about the side- 

 margins, mainly black but with some pale hairs on the luteous patches, and 

 some short depressed pale hairs occur on the disc of the last two segments 

 (except at the sides) and on the hind part of the fourth segment and also slightly 

 up the middle of the third ancl (even of the second) segment though 

 most visible on the second and third segments as pale fringes on the 

 hindmargins. Belly greyish black with the side thirds of the two basal 



