The Odoiiuta Of Draijoiiflles of Soiifh Africa. 379 



cells iu left hind wiug. The other speeiiueus are intermediate between 

 this condition and the figured pair of wiugs. 



c? , Ahd. 40, hdw. 34, pf. > 2 mm. ? , 40, 36, > 2. 



The nonieuclatorial questions regarding this species have been 

 discussed in the paper on Schultze's voyage. I have uo reason not 

 to follow now the conclusion there arrived at. 



MaCROMIA THETIS, U. Sp. 



Brit. Mus. :1c?, Chirinda Forest, Gazaland, 3600 ft. (9.x. 1905, 

 Q. A. K. Marshall) ; 1 ? , Mazoe, 4700 ft., Mashonalaud (28 . xii . 1905. 

 /'/.). S. Afr. Mus. : 1 9 , Barbertou, Transvaal. 



cJ. Lal>iuni light yellow, an oblicjue fuscous stripe on lateral lobe. 

 Laljruni ferruginous. Ante- and postclypeus ferruginous with au 

 olivaceous shade. Prous ferruginous in front and dorsally, olivaceous 

 laterally turning to yellowish towards the eye ; base rather broadly, 

 but diffusely darkened and metallic blue, a small and diffuse yellowish 

 spot in the very deep furrow. Vertex blackish, with metallic blue 

 sheen, diffusely turning to ochreous above and in front. Occipital 

 triangle black ; occiput very dark ferruginous. Thorax dark ferru- 

 ginous, marked with greenish yellow and Ijlack, with metallic blue 

 sheen. Yellowish : narrow line on median suture ; ante-alar sinus ; 

 broad autehumeral band, beginning on mesiufraepisternum, just 

 touching ventral end of humeral suture, distant from dorsal end of 

 same suture by about one-half of its own In-eadth, not quite reaching 

 to ante-alar sinus ; iirst lateral band at the stigma, broader by about 

 one-half ; second lateral l)and somewhat less than posterior half of 

 metepimeron. Blue-lilack ; diffuse stripes bordering the yellow bauds, 

 the autehumeral one behind, the first lateral one on both sides and the 

 second lateral one in front. Legs robust, very long, lalack, base of 

 femora dift'usely dark ferruginous. Tibial laminae as in jjicfa. 



Abdominal segments 1-2 moderately inflated, 3-6 slender, cylin- 

 drical ; 7-10 scarcely dilated iu lateral, much in dorsoventral 

 dimension ; lateral margin of 8 broadly rounded, not distinctly 

 foliaceous ; ninth and tenth segment, see p. 376 and Text-fig. 65. Seg- 

 ment 1 dull ferruginous, an indistinct yellowish spot at ventral margin ; 

 2-6 black, 7-10 dark ferruginous, with yellow markings : segment 2, 

 complete transverse band, touching anterior end at ventral margin 

 separated from end in mid-dorsal line by a ferruginous space ; narrow 

 line liordering genital pocket and lobe ; 3 narrow, dorsally interrupted 

 basal ring and submediau bilobed dorsal spot; 4 very small sub- 

 median dorsal double spot ; 5-6 wholly black ; 7 complete basal ring 



