124 EAST AFRICAN ODONATA— CALVERT. vol.xviii. 



cells in the front wings; anal angle of hind wings of male rounded, no 

 internal triangle on the hind wings; tooth on tarsal nails shorter than 

 the apex of the nail itself; nodus [slightly] nearer the apex than the 

 base [of the front wings] ; front wings with 10 [-11] antecubitals, 

 the last one not continuous; only one median cross vein in all four 

 wings. 



With these characters the present specimens agree, the slight modi- 

 fications which I have inclosed in brackets being of little importance. 



In Dr. Karsch's "Beitrage zur Kenntniss der Arten und Gattungeu 

 der Libellulinen,"' he has placed the genera Schizomjx, Karsch,and its 

 ally Zygony.Vj Selys, in that "Abtheilung" (of Brauer's fourth group) 

 characterized by having the sectors of arculus separated at their origin 

 or arising from a very short stalk. It would appear, however, that 

 at that writing at least, Dr. Karsch had not seen any specimens of 

 Zygonyx or Schizonyx^^ nor did any then published description mention 

 this detail of venation. Baron de Selys ^ says of Zygonyx, " secteurs de 

 Tarculus sondes a la base en une seule tige," and mentions no differ- 

 ence in this respect for Schizonyx. The specimens of 8. luctifera above 

 described have the sectors of the arculus as distinctly stalked at their 

 origin as in OrtJietrum, 3facrothemis, or other undoubtedly long-stalked 

 genera. Schizonyx would thus fall within the group Scapanea to 

 Uniamo of Dr. Karsch's arrangement. On the other hand, the position 

 of the discoidal triangle of the front wings, in being situated a little 

 beyond that of the hind wings, as well as the trapezoidal form of the 

 pterostigma, indicates some affinities with the group of Tramea, Hagen. 

 Of the nine genera recognized by Mr. Kirby and Dr. Karsch as belong- 

 ing to this group, the tropical American Miathyria, Kirby, most 

 approaches Schizonyx, but differs from the latter in having no small 

 prominence on the hind margin of the eyes, nodal sector not waved 

 beyond the middle; front wings with 7-9 antecubitals, 5-8 j)ost- 

 cubitals; hind wings with 4-5 antecubitals, 6-9 jiostcubitals, and pro- 

 portionately wider at base than in Schizonyx. 



PALPOPLEURA VESTITA, Rambur. 



FalpopUm-a vestUa, Eambur, Nevropt.,, p. 132, pi. 3, fig. 2b, 1842.— Brauer, Verlul. 

 k. k. zool.-bot. Gesell.j Wieu, XVIII, p. 716, 1868.— Selys, Euum. Odon. 

 Madag. (ill Pollen & Van Dam's Reokercbes sur la Faune de Madag., S'"" 

 part., l"-" livr.), p. 20, 1869.— Kirby, Cat. Odon., p. 9, 1890. 



PaJpopJeura confusa, Eambur, Ndvropt., p. 133, pi. 3, fig. 3c, 1842. 



Locality. — One male in the Xational Museum collection, from Zanzibar. 



1 Berl. Ent. Zeit., XXXIII, 1890, p. 356. 



-For Zijgonyr, I infer this from the general tone of bis article in Berl. Ent. Zeit., 

 XXXIII, pp. 280-284, and for Schizonyx are bis own words, "der mir uubekauuten 

 Schizonyx luciifera" (Berl. Ent. Zeit., XXIII, p. 282). 



3 Ann. See. Eut. Belg., XXXV, 1891, p. ccxxviii. 



