30 MR. F. F. LAIDLAW ON 



ill-defined antehumeral band of yellow-brown, Sides of the same 

 colour as the antehumeral band, with a broad metallic green- 

 brown band under each wing. 



Abdomen generally very dark brown ; segments 2-7 each with 

 a ring of lighter brown distally, in 2-4 occupying nearly the 

 hinder half of the segment, and in 2 extending forward laterally 

 nearly to the anterior end. In each case the extreme apex of 

 the segment has a darker ring; 8-10 are uniformly very dark 

 brown. 



Legs reddish brown, darker at the articulations and terminal 

 extremities. 



Anal appendages uniform dark brown in colour, similar in 

 form to those of M. rapida, but the lower appendage is nearly 

 equal in length to the upper pair. The lower margin of each of 

 the latter is more regularly curved than in that species, and 

 there is a small projecting median ventral tooth on each. 



Very closely allied to M. rapida Martin, the type of the genus, 

 which was captured in Tonkin. 



The type-specimen of M. fulva is deposited in the British 

 Museum. 



ZYGOPTERA. 



AgKIONIDjE. 



Agrionin^e (=Calopteryginje sensu Selys). 



9. Matronoides cyaneipennis Foerster. 



Matronoides cyaneipennis Foerster, Wiener Entom. Zeitung, 

 1897, iii. ; id. Ann. Soc. Entom. Belg. xli. 1897 (sep.), pp. 1-5, 

 fig. ii. ; Laidlaw, Journ. Roy. Asiatic Soc. Straits Branch, 

 no. 63, Dec. 1912, p. 95. 



14 S 6, 5 ? $ (Nos. 78-89, 1914), taken between Sept. 4th 

 and Sept. 19th, 1913, mostly on Sept. 11th. Two males were 

 captured at about 3000 ft. above sea-level. 



10. Yestalis amcena Selys. 



Vestalis amcena Kirby, Cat. Odon. p. 103 (1890); Karsch, 

 Entom. Nachr. xvii. 1891, no. 16, p. 243; Kruger, Stett. 

 Entom. Zeit. 1898, p. 75 ; Laidlaw, Proc. Zool. Soc. Lond. 

 1902, i. p. 87; Williamson, Proc. U.S. Nat. Mus. xxviii. p. 183 

 (1904); Ris, Ann. Soc. Entom. Belg. lv. 1911, p. 234. 



11 d 6, 5 $ ? • One <3 , 3000 ft., 4.9.13; the other specimens 

 10-11.9.13, no data (Nos. 91-100, 1914). 



De Selys has commented on the considerable differences in 

 size existing in a number of specimens he examined from Labuan 

 (3 me Addit. Synops. Oalopt. p. 475). The extremes noted by him 

 were as follows : — 



Abdomen : <$ 38-50 mm., $ 35-34 mm. 

 Lower wing : J 31-36 mm., $ 32-35 mm. 



