IQO Records of the Indian Museum. [Vol. XVI, 



species is unknown and as Thermagrion is known only from a 

 female specimen, more information is necessary. 



He admits the close similarity between the anal appendages of 

 C. coeruleuin and C.olivaceum. 



Personally, I think that the frontal ridge of C. coeruleum is at 

 any rate sufficiently marked to suggest that we have to deal 

 with a true Ceriagrion. As to the colour it seems to me that 

 the difference between C. coeruleum and C. olivaceum is less 

 than that between the latter and a crimson-bodied species, such as 

 for example C. crubescens, Selys. 



The specimen will be returned to the Indian Museum. 



Ceriagrion coromandelianum (Fabr.). 

 (Text-fig, 2.) 



Ceriagrion coromaiideliaiiiitn, Kirby, Cat. Odonata, p. 134 (1890) ; 

 Laidlaw, Rec. Ind. Mtis., XII, pp. 132-135, igi6 (larva). See also Ris, 

 Abli. Senckeub. Ces. XXXIV, p. 520 (1913). 



Spirit specimens, showing the colouring to all appearances 

 as brilliantly as in the living insect, enable me to give the 

 following account of the male. 



Head. — Upper lip, post- and ante-cl^-peus lemon-yellow, frons 

 gray-yellow up to level of anterior ocellus, and extending obliquely 

 upwards and inwards from the eyes to enclose the posterior ocelli. 

 Vertex and occiput bright golden-brown. This colour is delimited 



from the eyes and from the gray-yel- 

 low of the frons by exceedingly fine 

 black lines. The eyes are uniformly 

 pale olive- green. 



The thorax and prothcrax are uni- 

 formly olive-green of a less intense 

 Fig. 2.-Ceriagrion coroman- ^0"^ than theeyes. On the dorsum it 

 delianum {Fahr.). takes on a slightly brown tinge; be- 



Apex of abdomen from above. low it fades to greenish-white. 



Abdomen uniformly lemon-yellow, 

 as are the legs ; the latter have black spines. 



Anal appendages lemon-yellow, darker towards their apices 

 and tipped with black. 



Ceriagrion rubiae, Laidlaw. 

 (Text-fig. 3-) 



Ceriagrion rubiae, Laidlaw, Rec. Ind. Miis., XII, pp. 132-133 (191 6). 



I cj, Castle Rock, Talewadi, N. Kanara District, Bombay (S. Kemp). 

 4379/H.i. 



The t^'pe specimen was taken at Chalakudi in Cochin State. 

 I have deposited a paratype in the British Museum, which pos- 

 sesses a splendid set of this genus. 



