140 EAST AFRICAlS ODONATA— CALVERT. 



PHAON IRIDIPENNIS, Burmeister. 



Calopteryx iridipennis, Burmeister, Handb. Ent. ii, p. 827, 1839. — Walker, List 

 Neur. Ins. Brit. Mus., p. 609, 1853. 

 Eupha:a iridijjennis, Ramcur, Nevr., p. 232, 1842. 

 Phaon iridipennis, Selys, Syn. Calopt., p. 24, 1853; 4e Add., p. 

 13, 1879; Monog. Calopt., p. 70, pi. 3, figs. 3, 4 (wings), 1854; 

 Emmi. Odon. Madag., p. 24, 1869.— Kirby, Cat. Odon., p. 

 Fig. 14. 101,1890. 



PHAON iRiDiPEN Odg male iu the Katioual Museum collection, from 

 Nis.maie. Zanzibar, bclouging to the typical form, P. iridipennis, 

 ""mtiappenir.''"'''' havlug a pterostigma. 



DISPARONEURA ABBOTTI, new species. 



Male. — Black with the following markings : 



A yellow band running across the front of the head from eye to eye, 

 just above the ei)istoma. 



Labium and palps yellow, except the tips of the palps which are 

 black. 



Anterior, posterior, and lateral margins, a small double spot on the 

 middle of the prothorax, and sometimes one on each side, yellow. 



Thorax with a narrow antehumeral stripe, not attaining the antealar 

 sinus, a broad oblique band in which lies the spiracle; all the side pos- 

 terior to the black stripe which lies uj)on the whole length of the second 

 lateral suture, and the pectus, greenish, 



Coxte, trochanters, and femora mainly yellowish, the black upon the 

 latter reduced to a superior stripe, which, however, occupies nearly the 

 entire second and third femora at their apices, and nearly all the first 

 femora. 



Abdomen: A narrow longitudinal median dorsal stripe on 2, reaching 

 from the base to a little more than half its length; a narrow basal ring 

 on 3-6 interrupted on the median line; apical dorsum of with a tri- 

 angular spot whose truncated apex, directed forward, is distant from 

 the base of the segment by about one-fourth the segmental length; 

 dorsum of 10 ; inferior lateral margins of 1-8, confluent with the basal 

 rings on 3-0, all yellow. 



Superior appendages yellow, of the length of the last segment, taper- 

 ing slightly from base toapex,which latter is slightly thickened interno- 

 inferiorly; each appendage apparently bears an intero-inferior basal 

 tooth. Inferior appendages a little longer and darker than the superi- 

 ors, moderately slender and curved somewhat toward each other in 

 their apical halves. 



Wings hyaline, yellowish, Pterostigma black, rhomboidal, surmount- 

 ing one cell. Median sector arising from the vein of the nodus, the 

 subnodal a short distance after. Lower sector of the triangle aris- 

 ing from the posterior margin of the wing about as far behind the 



