PHILIP A. MUNZ 55 



19 (18). The upper side of the quadrangle scarcely shorler ihan the lower. Cu2 

 extending six to eight cells beyond the level of the subnodus. Four to five cells 

 between the base of Rs and the forking of Mi^j. West Africa to South Africa. 

 (Fig. 77.) Allocnemis Selys, 1863 



20 (15). Wings petioled beyond the level of the arculus. Ac under or near the level 

 of the first antenodal. R3 arising one or two cells beyond the subnodus, M3 at the 

 subnodus. Madagascar. (Fig. 78.) j Tatocnemis Kirby, 1889 



; Nesocnemis'* Selys, 1891 



21 (14). Rs arising four or more cells beyond the subnodus, at least in the front wing. 

 Ac about one-half way between the antenodals. Philippines. (Fig. 79.) 



Prionocnemis Kirby, 1890 

 {Ilypooiemis Selys, 1863) 



22 (i). The quadrangle generally with a very acute distal lower angle, the upper side 

 of the quadrangle usually less than two-thirds the length of the upper side. 

 M4 and Cui usually zigzag, so that many cells are pentagonal. Wings generally 

 not long nor with the "straight appearance of those under rubric (i). (If the 

 wings have the general appearance of those under (i), the quadrangle is acute at 

 the end. If the quadrangle is regular, the postnodals are few in number and the 

 second antenodals are before the arculus.) .- 23 



23 (28). M4 and Cuiuot strongly zigzag, so that the principal veins are long, straight 

 and give the wing the straight, uniform appearance of the Platycnemis group. 

 Tibial spines relati\-ely long 24 



24 (27). In the front wing the inner end of the quadrangle is about as long as the 

 upper side. M1+2 forks much nearer the origin of Mia than the subnodus 25 



25 (26). The upper side of the quadrangle about one-third as long as the lower side. 

 The superior appendages of the male longer than the inferior, and compressed, 

 and bent at the end. Seychelles. (Fig. 80.) Leptocnemis Kirby, 1890 



[Ilemicnemis Selys, 1882) 



26 (25). The upper side of the quadrangle about one-half as long as the low-er side. 

 The superior appendages of the male thick, short, compressed, and conical in 

 form. Madagascar Paracnemisi^ Martin, 1903 



27 (24). The inner end of the quadrangle of the fore wing about one-third the length 

 of the upper side; the quadrangle long and narrow. M1+2 forking about one- 

 half w^ay between the subnodus and the base of Mia. Chili. (Fig. 81.) 



Antiagrion Ris, 1904 



28 (23). M4 and Cui zigzag; M1+2 usually curved somewhat at or be>ond the sub- 

 nodal region, instead of running straight out 29 



29 (40). Tibial spines long, generally about twice as long as the intervening spaces. 

 In the front wing the inner end«of the quadrangle generally longer than the upper 

 part of the arculus and as long as the upper side of the quadrangle. Quadrangle 

 widened distally. Wing not petioled to the level of Ac 30 



'* De Selys' description of Nesocnemis fits that of Tatocnemis almost exactly; the two 

 are evidently the same genus. 



1' Studied from the description only. 



MEM. AM. ENT. SOC, 3. 



