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



the yellow antehumeral thoracic marks are similarly altered ; the 

 sides of the thorax are more extensively marked with black. The 

 abdomen is almost entirely black, segments 4-5 showing some dark 

 brown colour. The anterior segments especially have a blue pruin- 

 escence ; the legs are entirely black, pulverulent like the abdomen. 



Lastly, an old male is almost entirely black, the only colour- 

 ing being on the extreme of the upper lip, which still remains 

 yellow, and the lower two-thirds of the eyes, which are of a bluish- 

 green colour. The sides of the thorax have become entireh^ black, 

 the pruinescence is retained on the top of the head, and on the 

 antehumeral bands of the thorax. The black of the abdomen is 

 intense and metallic. 



? Young. — Colouring almost identical with that of the young 

 male, the chief difference seems to be that the yellow margin of the 

 upper lip is more extensive than in the male sex. 



The first indication of approaching melanism is the appearance 

 of a narrow, very dark brown band, running longitudinally on the 

 dorsum of abdominal segments 2-4, whilst the remaining distal 

 segments pass progressively from very dark brown to black. 



It may be remarked that at this stage the female bears some 

 resemblance in colour pattern to that of C. eximia. 



A female coloured thus was taken in copula with a male in the 

 ' all black ' stage. 



More adult females pass through the same colour change as 

 the males, reaching ultimately the condition of blackness relieved 

 only by the pale yellowish green of the lower part of the eyes ; in 

 this state also they are taken mating. 



The three species noted above are evidently at least locally 

 abundant, and presumably occur together, as I have before me 

 bottles containing spirit specimens of two or in some cases three 

 species apparently collected indiscriminately and in considerable 

 numbers. 



The remaining species of the genus must be very rare on the 

 Himalayan range, or more probably do not occur there at all, as 

 they are unrepresented in the Museum collection and in Mr. Stevens' 

 series. 



Calicnemis miles, nom. nov. 



' The synonymy involved here is as follows : — 



(1) Cnlioiemis eximia, Selys, Synopsis, 1863. _ 



,, race atkiiisoiii ?, Revision, 1886. 

 ,, ,, atkinsoui ?, Odonates de Bii-niaiiie, 1891. 



[2) Calicnemis miiiiafa, Selys, Revision, 1886. 



eximia ? , Synopsis, 1863. 

 13) Spr. inno7ninata=^ vizies. 



Calicnemis afkinsoni ^, Odonates de Birmanie, iSgi. 



TABI.E OF THE SPECIES OF CALICNEMIS. 



^ A. Legs yellow or orange. 



i. Abdomen cntirel)- scarlet .. C. eximia, Se\ys. 



ii. Abdomen with black articular rings, segments 9, 10 dark. 



C. miles, n. n. 



