5. ODONTOMYIA 135 



dense black pubescence, the upper half dull deep black, only slightly inflated, 

 and with shorter black pubescence, of which a slight postocular fringe can be 

 seen • vertex elongate, black, moderately shining, with rather long grey 

 pubescence on the back part but with shorter and black pubescence between 

 the ocelli, and all the vertical pubescence slopes slightly forward ; down the 

 narrow interval which just separates the eyes there is a line of shorter slightly 

 u])turned black pubescence which does not quite extend to the frons ; frons 

 with a slight middle furrow which widens out to an ovate depression on the 

 middle • proboscis blackish with large light brown sucker-flaps on which are 

 numerous brownish yellow hairs. Eyes clothed with comparatively sparse 

 o-reyish pubescence ; facets on the upper half of the disc larger than those on 

 the lower half, but with no conspicuous distinctive boundary between them ; 

 in life they are' said to be greenish with a bluish band on the dividing line. 

 A.ntenna} dull black, but slisf-htly shining on the basal joint, not quite so long 

 as the head, diverging after the basal joint ; basal joint slightly longer than 

 the elongate cup-shaped second joint, and both these joints with fairly obvious 

 black bristly pubescence which is rather the longer on the basal joint ; third 

 joint nearly twice as long as the two basal joints together but rather thinner, 

 especially after the first three annulations, bare and with indistinct annula- 

 tions, of which the first is the longest and the next two a little shorter, and 

 after 'these there appear to be three more annulations of which the fourth and 

 sixth are about equal in length, but the fifth short (being only about as long 

 as wide) : last joint not pointed. , , . . ■,-■,■, , . 



Thorax and scutellum all black, moderately shining, and with dense but 

 not absolutely crowded fine punctuation ; pubescence all over the disc and on 

 the scutellum dark brownish orange, fairly long and dense, almost erect, and 

 composed of thin hairs ; on the sides of the disc from the humeri to the 

 wing-bases there is a fairly broad stripe of black pubescence, and all the upper 

 parts of the pleuree and prothorax bear black pubescence, but the lower parts 

 of both bear more straggly greyish white hairs. Scutellum with a pair of 

 short obscure tawny spines which are rather close together. 



Abdomen all black, quite as shining as the thorax and more so in Uie 

 hollows before the sidemargins : the middle three-fifths of the second, third, 

 and fourth segments are raised but flat, and outside this is a hollowed space 

 between this raised portion of the disc and the conspicuously elevated side- 

 margins (which is probably the space in which the wings he when at rest) ; 

 the abdomen is very densely but finely punctuated on the raised part, but not 

 so densely punctate on the depressed part ; pubescence inconspicuous, con- 

 sisting of scattered, erect, black mixed with brownish yellow hairs on all the 

 middle part of the disc but more extensively black towards the sides: 

 pubescence on the middle of the hind part of the fourth segment and on all 

 the fifth segment rather more dense and all brownish orange • margin with 

 outstanding distinct though rather short rather sloping black pubescence, 

 and even the longer tufts at the shoulders black; fifth segnaent with an 

 obscure but fairly broad yellowish hindmargin, and a black sixth segment 

 just visible. Belly orange, with a more or less distinct broad blackish rnargin 

 except about the base and where the hindmargins run out as orange lines a 

 little way into these blackish sidemargins ; on the middle of the disc of the 

 third and fourth segments there are traces of pairs of small black spots, and 

 the fifth segment is nearly all black except on the orange hmdmargin ; 

 pubescence erect, rather dense though the hairs are thm, all greyish yellow 

 on the four basal segments, rather depressed on the disc ot the fourth 

 segment. Genitalia distinct, brown. , / i • 



Legs black and orange : coxae, trochanters, and femora (except at their 

 extreme tip) black, but the basal half of the femora usually brownish; 

 tibige orange with a badly defined brownish ring on the anterior pairs and a 

 blackish ring on the hind pair occupying nearly the middle third (at any rate 

 behind) ; tarsi orange with the last two or three joints or some of them 

 blackened above; tips of the claws black. Pubescence on the femora 

 moderate, obscure greyish, or more obviously pale on the hmd pair, but 

 blackish behind the anterior femora about their tips. _ 



Wings hyaline with the base and the anterior and the strong veins blackisfi 

 brown, but with no sign of any cloud about the discal cell ; cubital vem with 



