258 PROCEEDINGS OF THE ACADEMY OF [May,^ 



JJJ. — Area posterior to Cu2 with one row of cells. 

 K.— Old World Genera.9« 

 L. — A separating from the hind margin proximad to 

 the level of the arculus (some Podolestes fall here — 

 see below under 00). 

 M. — Supplementary sectors from Mi to Ms and between 



M4 and Cu2, none between Ms and M4 



Rhinagrion nom. n. for Amphilestes 



Selys, 1862^1 (Malaysia). 



MM. — Supplementary sectors (two each) from Mio to Rs, 



one between Ms and M4 



Mesopodagrion McLachlan, 1896 (Thibet, West China). 



LL. — A separating from the hind margin distad to the level 



of the arculus. 



N. — Quadrilateral with its anterior side more than half 



as long as its posterior side, Cui only slightly 



arched forward on leaving the quadrilateral. 



O. — Arculus distinctly distal to the second antenodal, 



supplementary sectors (two each) from Mia to 



M4 Nesolestes Selys, 1891 (Madagascar). 



00. — Arculus at, or but slightly distal to, the second 

 antenodal, supplementary sectors (one or two 



each) from Mm to M4 



Podolestes Selys, 1862 (Labuan, Sumatra). 

 NN. — Quadrilateral with its anterior side half, or less 

 than half, as long as the posterior side; Cm 

 strongly arched forward on leaving the quadri- 

 lateral, supplementary sectors (one each) from 



Ml or Mia to Rs or Ms 



Synlestes Selys, 1869 (Australia). 

 KK. — New World Genera. 



P. — A separating from the hind margin proximad to 



the level of the arculus, .supplementary sectors 



from Mia to Rs and between Ms and M4. 



Q. — Area Mia to M2 with three I'ows of cells, two 



unbroken supplementary sectors between M2 



and Rs Megapodagrion Selys, 1885, 



sens, strict. (Brazil). 



QQ. — Area Mia to M2 with two rows of cells, one 



zigzag supplementary sector between M2 and 



Rs Allopodagrion Foerster, 1910 



(Northern South America). 



3" Although the first two subdivisions, K and KK, under rubric JJJ are geo- 

 graphical, not structural, for convenience' sake, the structural features under 

 K and KK are sufficiently detailed to enable the identification of a form of 

 unknown habitat to be made. 



81 The name Amphilestes Selys is preoccupied by Amphilestes Owen (Encyc. 

 Brit., 8th edit., XVII, p. 157, 1859) for a fossil mammal. Rhinagrion is suggested 

 by de Selys' emphasis of one of the characters of his Amphilestes as " Tete robuste, 

 k ^pistome saillant." 



