IQIQ-I F- F- Laidlaw : Indian Dragonflies. 183 



Genus Enallagtna. 

 Enallagma cyathigerum, Charp. 



Enallagma cyafliigerum, Kirby, Cat. Odoiiata, p. 145 (iSgo) ; Morton, 

 Trans. Ent. Soc. London, 1907, p. 307. 



Many specimens (^ and 9 from the Jhelum Valley, Kashmir. 5,000 ft. 



Also recorded by Morton {Ice. cit.) from Kashmir. 



This species and Ischnura elegans, Van der L/inden, are the only 

 British Agrionids known to occur within the limits of the Indian 

 Empire. 



Of the other Indian species, E. nialavanum, Sel^^s, belongs to a 

 section of the genus represented in Tropical Africa by some five or 

 six allied species; E. maldivense , Laidlaw, belongs to the same 

 group. The last .species Enallagma} parvmn, Selys, is an isolated 

 species with no near relative. 



Enallagma malayanum, Selys. 



Enallagtna ? malayanum, Kirby, Cat. Odonata, p. 147 (1890;. 

 Enallagma malayanum, Ris in Schultze's Forschungsreise im west u . 



zentral Sudafrika IQ03-1905 : DetikscJw. der medizin.-naturiviss. 



Gesellsch., Bd. XII, 1908, pp. 310-313. 



2 (JcJ, I 5, Nagpur, C.P., 1,000 ft., Sept. 1916 {E.D'Ahreu). 



The female of this species has not yet been described. The 

 single specimens of this sex taken by Mr. D'Abreu has a large, 

 ventral, apical, spine on segment 8 of the abdomen. The colour 

 pattern of the head, prothorax and thorax is as in the male, 

 but the ground colour is yellowish-green instead of blue. The 

 abdomen also is yellowish-green with a broad black, dorsal band on 

 segments 1-9. 



Enallagma maldivense (?), Laidlaw. 



Enallagma ? maldivense, Laidlaw, in " The Fauna, and Geography 

 of the Maldive and Laccadive Archipelagoes," vol. i, pt 2, p. 221. 



I had an opportunity some time ago of re-examining the five 

 specimens of this form. Unfortunately all are so dilapidated that 

 they are useless for critical purposes. I can say, however, that 

 they are true Enallagmas , considerably larger than E. malayanum, 

 Selys, in size agreeing with E. glaucum, Burm., an African form, 

 widely spread and found in Reunion. The measurements are: — 



E. maldivense cf , abdomen 24 mm., hind-wing 18 mm. 

 E. glaucum cf , abdomen 22 mm., hind- wing 17 mm. (Cape 

 specimens, vide Dr. Ris.) 



The Maldive Islands' specimens do not agree precisely in 

 colouring with E. glaucum, Burm. More material is required 

 to settle the position of the insect. (See Ris in Schultze's For- 

 schungsreise im west u. zentral Sildatrika, 1903-1905 : Denkschr. der 

 medizin -naturwiss. Gesellsch., Bd. XIII, 1908, fig. 310-314.) 



