292 CATACHRYSOPS; TARUCUS. By Dr. A. SeUz. 



to differ much in habits. According to Green the non-tailed form swarms in India sometimes in clovul-Uke 

 multitudes around thorn-trees, whereas the other form is solitarj- and has a weaker flight. The life- 

 history, which would clear awaj' the uncertainty about the relation ship of the two forms, is not yet 

 known. We add that the underside figured 77 i belongs likewise to the tailed form noreia, not to true 

 ardates. Kashmir and the North- West Himalaya; also widely distributed in India, the dry districts with 

 scanty vegetation excepted. 



pavana. N. pavana Horsf. (78a). Similar to the preceding, larger, always tailed; the transverse bands of 



the underside thinner and more regular and numerous. — Especially in Bhutan and the adjacent parts of 

 Tibet; also widely distributed in India, particularly in the eastern districts, southward to the Andamans 

 and the Sunda Islands. 



28. Genus: Cataclirysops Bdv. 



The name has been taken from the anal ocellus on the hindwing beneath; this ocellus is black on 

 a red-yellow ground and is externally bordered with glittering blue-green scaling, which is still more 

 intensely metallic than in Lainpides. Otherwise close to the preceding genera, the outer margin rounded, 

 the hindwing tailed, the underside with far fewer markings, on the disc dispersed black dots with pale 

 borders. Larva onisciform, brown or green, with dark dorsal line, head small, concealed under the anterior 

 thoracic segments; the markings so variable in the specimens of the same species that one can hardly 

 obtain two individuals alike. On ring 12 a tubercle with reversible but small organ. On Cycas, 

 Phaseolus, etc. The larva is found in the company of ants of the genera Camponotus, Prenolepis, Mono- 

 morium and Crematogaster. Although the larva is so common that it does considerable damage to the 

 Leguminosae in gardens, De Niceville never succeeded in finding the pupa and therefore suggests that the 

 full-grown larva is led by the ants into their nests for pupation, as it has been observed of allied Lycae- 

 nids (e. g. Azanus ubaldus). Larvae kept in captivity changed into a smooth, yellowish brown, dark- 

 marked pupa without special distinctions. The butterflies are good fliers; they belong to the commonest 

 Blues and settle with closed wings on the stalks of twigs projecting from bushes. They fly rather fast, but 

 mostly only short distances. 



cnejus. C. cnejus F. (= patala Koll.) (77 i). Above almost like baeticus in both sexes; the distal margin of 



the forewing more rounded, the tail shorter. The ground of the hindwing beneath purer light leaden grey, 

 with characteristic markings, which are much sparser but sharper. Throughout the Himalayas, as far as 

 Kashmir and West China, southward beyond India to Australia and eastward to the South Sea Island. — 

 conlracta. confracta Btlr. is a dwarf-form with the ground-colour lighter and the markings of the underside paler; 

 from Afghanistan, hapalina, theseus and ella are local or seasonal forms of the Indian fauna. — Larva 

 pale green, with black head and dark green longitudinal lines, which are posteriorly united to form a 

 broad band; the whole surface with minute pale striation. On Phaseolus and Dolichos catjang (Taylor), in 

 company of the ant Camponotus rubripes compressus. Pupa pale green, darker on the abdomen, surface 

 quite smooth. The butterflies occur in the Western Himalayas during the summer, in the tropics through- 

 out the year, singly but everywhere; rare only at higher altitudes and at the boundaries of our Region, 

 elsewhere common. 



pandana. C. pandana Horsf., likewise flying in the Western Himalayas, differs from the (larger) cnejus in the 



two black dots situated in the anal area of the hindwing not being equal in size as in cnejus, but unequal. 

 One distinguishes a paler wet form from a darker dry form; a transitional form is nicola Swinh. The 

 dry-season form has the ground-colour duller and the markings in the anal area of the hindwing less sharply 

 developed. — Larva adult brown or green, with black head, minutely chagreened with whitish, mostly with 

 dark dorsal and lateral lines and sometimes with a darker oblique stripe on each segment. On Cycas 

 revoluta, in the company of several species of ants. Pupa dark brown, with blackish dorsal line and slightly 

 angular head, otherwise smooth. Probably in the nests of ants. The butterflies, in the warm countries, 

 are on the wing throughout the year. 



29. Genus: Tarucus Moore. 



In this genus two very heterogeneous forms are united: on the one side the forms of the telicamis- 

 group (Gen. Langia), with hairy eyes and related to Lamjndes, and on the other the very slender and 

 delicate small Blues of the theophrastus-gTomj} with naked eyes. As there are but few forms in 

 the Palearctic fauna, we abstain from splitting up the genus. The butterflies are above either dark 

 brown with feeble gloss (felicanMS-group) or brilliant violet-blue (^J of the theophrastu's-group) . Head small; 

 frons narrow; palpi long and porrect; antennae thin, but very variable in length, with ringed shaft and a flat 

 pyriform club. Wings large in proportion to the body, the apex of the forewing acute, but the outer margin 

 convex, the hindwing either with or without tail. The underside always with very strongly developed markings. 



