28 Records of the Indian Museum. [Vol. XIII, 



Arc/iiiu'iirn hiisihicfea, Kivhy, Aim Mag. Nat. Hist. (6) XIII, pp. CS4-86, 

 "text figs. (1894). 

 id., op. cit., pp. 455-456. 

 .Irc/iiiic/ini iiicaniiifd, M'Lachlan, Aidi. Mag, Nat, Hist. (6) XVII, 

 p, ,^70 (1896). 



Echo modesta (lyaidlaw). Malay Peninsula. 



Echo modesta, Laidlaw, Pi'oc. Zool. Soc. London, 1902 ^i), p. 84, pi. vi 



Echo {Cliviacobasis) modesta, Laidlaw in Fascic. Malayenses ( Zoology 1, 



pt. I, p. 191 (1903). 

 Climacobasis modesta, Williamson, Proc. U.S. Nat. Miis., XXVIII, p. 



186, fig-. 17 (1904). 

 Climacobasis liigeiis, Laidlaw, Proc. Zool. Soc. London, 1902 ( i), p. 85, 



pi. \i, fig". 5. 



Echo maxmia, Martin. Tonkin. 



Echo maxmia, Martin, Mission Pavie, Neuropteres (sep.), pp. 16-17. 



The confusion which has arisen in the synonymy of this 

 interesting genus appears to me to be due to the fact that de 

 Selys founded the genus on a female specimen of E. margarita the 

 wings of which he figured. 



The females of all the species of the genus so far as is known 

 have very small trapezoidal pterostigmata. When attempting to 

 find a place for the male of E. modesta I was struck b}' the con- 

 siderable length of the pterostigmata which contrast markedly 

 with the small corresponding structure of the female (see WiUiam- 

 son's photographic figures, loc. cit.). 



When Selys described the male E. margarita he did not call 

 attention to this difference in the sexes, and I was not aware of 

 its existence. 



The male of E. uniformis, however, appears from Kruger's 

 account to have a small pterostigma like the female. 



The same peculiarity evidently largely induced Kirby to erect 

 the genus Archineura for the large E. incarnata, but he had a 

 further justification in the dense reticulation of the anal area in 

 that species. I do not know the female of this species, nor have 

 I seen an example of Martin's E. maxmia, but I am now of the 

 opinion that all these species may properly be referred to the 

 Selysian genus. 



Genus Matrona, Selys. 



2. Matrona basilaris, Selys. 



Mati'onn hnsilaris, Kirby, Cat. Odonata, p. 100 (1890). 



,, ,, McLachlan, Ann. Mag. Nat. Hist. (6) XVII, p. 370 



(1896). 



,, ,, Martin, Mission Pavie, Neuropteres (sep.), p. 15 



J 1 904). 

 Mati'otia nigripectiis, Kirby, loc. cit., p. 100. . 



,, ,, Martin, loc. cit., p. 15. 



Matrona basilaris race nigripectiis, Selys, Ann. Miis. Civ. Genova, (2) 



X (XXX), p. 52 (1891). 

 See also Foerster, Ann. Soc. Ent. de Belgiqite, XLI, p. 2(i6 (1897). 



I have before me eight examples of the genus representing 

 probably two distinct races, and have examined the material in the 



