CITHECIA; COLLIX. By L. B. Prout. 299 



nearly as in redangulata, but costally with at least as strong a proximal curve as in consueta; snblerininal 

 line less dentate, on underside thickened, not dentate; discal dots larger, especially on forewing. Underside 

 nearly white, sharply marked, the postmedian line even thicker than in dehiliata and consueta, an equally dark 

 band present proximally to the subterminal. ? ovipositor rather long. Gensan, Korea, July; type in cull. 

 Brit. Mus. Nikko, in coll. Pungeler. 



C. rectangulata L. (= viridulata Hnfn., mediana Panz.) (13 k). Green, more or less dulled with black, rechmgu- 



the lines black, the postmedian forming sharper angles than in the two following. Underside very sharply ^*'*- 



marked. — In ab. subaerata Hhn. the black markings are reduced, only the antemedian and the postmedian suhaerala. 



line developed. — In ab. cydoniata Bkh. the black is increased, particularly in the median area. — ab. cydoniata. 



nigrosericeata Hmv. {^= sericeata Haiv., bischoffaria Hbn., anthrax Dietze) is entirely or almost entirely black, nirjroseri- 



About London this form has almost entirely supplanted the others. — The larva feeds in the blossom of '^*«''^- 

 wild and cultivated apple and is often very injurious. It grows rapidly and produces the perfect insect at 

 the end of May or in June. The egg hibernates. Widely distributed and often abundant in Europe. Also 



in Transcaucasia. — griseata Stgr., cited by its author as a form of dehiliata or possibly of chloerata, is gn'seala. 

 according to Dietze a grey form of rectangulata. Ussuri. Perhaps it will prove to be referable to consueta_ 



C. dehiliata Hbn. (13 k). Much paler than the two preceding, being of a very delicate, evanescent pale dehiliata. 



green, the lines mostly much weaker, strongest on the veins. — ab. nigropunctata Chant, has only the principal mqropunc- 



lines, these being marked as strong vein-dots. Frequent in Devonshire. — grisescens Dietze is silvery grey <«^.«- 



without a tinge of green. Recorded by Spei'ser, from Vaccinium uliginosum on the Prussian moors, as griseata ^ '* 

 Stgr. — Larva on Vaccinium myrtillus, feeding spun up m terminal shoots in the spring. Moth in June — 

 July. Central Europe to the Ural and Transcaucasia. 



C. agitata Chr. (13k). Unknown to me, doubtfully referable to this genus; Dietze thinks it probably agilaia. 

 a Collix. It differs from dehiliata in its reddish-grey colour, strong black-brown costal streaks and spots, 

 obsolete lines and crenulate white subterminal; median area bounded by fine vein-dots. Distal margin of 

 hindwing weakly crenulate. Antenna in cf without ciliation. Palpus shortish. Amur and Ussuri district. 



76. Genus: Cithecia Stgr. 



An offshoot (perhaps merely a section, as Hampson and Pijngeler regard it) of Chloroclystis, with long 

 pointed frontal tuft and very long palpus (about 8 times diameter of eye); 2"^ palpal joint greatly prolonged, 

 with long projecting scales beneath, %^^ joint moderate, slender, slightly deflexed, partly concealed, cf antennal 

 ciliation minute. 



All the forms which seem strictly referable here are treated by Hampson as a single species, pal]pata 

 Walk., but they will perhaps need careful revision. They are distributed from India to Java and Japan. 



Ziridava Wkr. scarcely differs except in cf antenna and in shape and facies, and would be the oldest 

 name for the genus. 



C. excisa Btlr. (= julia Btlr., macrocheila Stgr.) (131). Superficially similar to the banded forms of excisa. 

 rectangulata, the median area solid, brovra or blackish, the green colour restricted to the narrow pale bands 

 which bound this area; discal dot large.^ Hindwing weakly marked or markingless. Only differs from the 

 variable Indian palpata in having in general less green colouring, a larger discal dot and darker hindwing- 

 Japan and the Ussuri district. From Dharmsala I have before me somewhat intermediate forms. 



77. Genus: Collix Guen. 



Akin to Eupithecia, differing in the strongly dentate distal margin of the hindwing and from most species 

 of Eupithecia in the double areole. It probably intergrades with Horisme, or at least Section B (Pseudocollix) 

 might well be transferred to that genus. 



Early stages insufficiently known. 



The genus is chiefly Indo-Australian, with very few Palearctic and African representatives. 



A. Palpus long. Forewing with tuft of raised scales on discocellulars. (Collix.) 



C. hypospilata Guen. (13 n). Purplish fuscous, the lines quite indistinct, the pale postmedian hand hypospilaia. 

 somewhat better indicated, at least anteriorly, the subterminal represented by whitish dots; cell-spot of fore- 



