170 LYCANIDA. CATOCHRYSOPS. 
slender tail [at the termination of the first median nervule] ; costal mervure much arched ; 
Jirst subcostal nervule slightly curved, emitted at one-fourth before the end of the discoidal 
cell ; disco-cellular nervules obliquely recurved ; déscofdal nervule from their middle ; déscoz- 
dal cell broad; third and second median nervules from the end of the cell, f7s¢ median 
at one-half before the end ; swbmedian nervure straight, zmternal nervure recurved. Bopy, 
moderate ; fa/~z porrect, second joint laxly squamose, third joint long, slender; /egs slender ; 
antenne with the club rather short, grooved ;” eyes hairy in C. strado, Fabricius, naked in C. 
énejus, Fabricius, and C. pandava, Horsfield. ‘“ Type, C. strabo, Fabricius.” (JZoore, 1. ¢.) 
The costal nervure of the forewing terminates just opposite the apex of the discoidal cell ; 
the first subcostal nervule is bent upwards just beyond its base, and runs parallel with and 
touches the costal nervule for a short distance but does not completely anastomose with it 5 
the origin of the second subcostal is nearer the base of the first subcostal than to the base of the 
upper discoidal ; the third subcostal nervule is emitted from the subcostal nervure just midway 
between the base of the upper discoidal and the apex of the wing ; the upper discoidal originates 
from the subcostal nervure before the apex of the cell, consequently there is no upper disco- 
cellular nervule ; the middle and lower disco-cellulars of equal length, the lower discoidal from 
their point of junction. In the hindwing the upper disco-cellular is outwardly oblique, the lower 
perpendicular. In C. sandava, Horsfield, the first subcostal nervule of the forewing is quite 
free from the costal nervure and does not touch it as in the typical species. 
I can recognise three distinct and well-marked species in this genus. C. strabo, Fabricius, 
is lilac-blue in the male on the upperside in typical specimens, but it occasionally has a 
** sport” or aberration which is greyish silvery-blue (4thargyria). C. cnejus, Fabricius, is 
equally distinct, the male of a deeper colour on the upperside, more purple than blue, with 
two instead of one black marginal ocellus at the anal angle of the hindwing. This appears to 
be a very variable species, Messrs. Butler and Swinhoe recognising six distinct forms of it, 
none of which are in my opinion worthy of specific rank, Lastly, C. jandava, Horsfield, 
is quite distinct, but has a well-marked seasonal form occurring in the dry weather, which at 
once reminds one of the corresponding form of Chilades laius, Cramer, in that the hindwing on 
the underside has all the discal markings run together into a large dusky patch. 
The transformations of all three species are known, but of two only have they been 
described. The larve and the pupz are of the usual lyczenid form ; all the larve have the 
extensile organs on the twelfth segment, and are attended by ants. 
I do not know of the occurrence of any species of the genus in Europe, but it is found in 
Africa, near Aden, in Persia, and throughout the Indian region, the Malay Peninsula and Archi- 
pelago, in China, in Australia, and in the South Sea Islands. 
Key to the Indian species of Catochrysops. 
A. Both sexes witha distinct small dusky costal spot between disco-cellular and discal bands on underside 
of forewing ; eyes hairy. 
a. Male, upperside lilac-blue. 
743- C. sTRABO, India, Ceylon, Malayana, Andaman and Nicobar Isles, China, 
Australia. 
&. Male, upperside greyish silvery-blue, female unknown. 
744. C. LITHARGYRIA, Ceylon, Andaman Isles, Burma, Upper Assam, Philippines, 
B. Both sexes with no dusky costal spot on underside of forewing ; eyes smooth. 
a. Male, upperside with two nearly equal-sized black spots at anal angle of hindwing. 
745- C, cnayus, India, Ceylon, Andaman and Nicobar Isles, Malayana, China, 
Australia, South Sea Islands. 
746. C. THESEUS, Bombay. 
747» C. ELLA, Western India, Punjab, Central India. 
748. C. conrracra, Kandahar, Karachi, Kutch, Madras. 
749. C. HAPALINA, Punjab, Deccan, Central India. 
&. Male, upperside with one large black spot at anal angle of hindwing. 
750% (C. PANDAvA, India, Ceylon, Andaman and Nicobar Isles, Burma, Malay 
Peninsula, Java, Bantam, 
751. C, nicoLa, Bombay. 
