C ID ARIA. By L B. Prout. 



255 



belong to the Palearclic fauna, being the representative of hastata in N. America; but it seems to be distributed 

 in the Arctic region. In its typical form it is even more black than chinensis, the forewing only vvitii an 

 angulated, black-dotted postmedian white band and traces of the sagittate mark, the hindwing almost entirely 

 black. — ab. furcifascia Walk, is entirely black excepting the postmedian band of the forewing. furcifascia. 



C. thulearia H.-Srh. (10 e) represents hastata in Iceland. It differs chiefly in its more brownish tone thnkaria. 

 and the peculiar greasy-looking appearance of the wings (very different from the sharply black and white 

 colouring of hastata) and the regular continuity of the subterminal line, which entirely lacks — or at most 

 only feebly indicates — the sagittate mark of hastata. In the name-type the pale areas are slightly suffused 

 but distinctly differentiated. — In ab. islandica Gnipbc/. (a badly chosen name) these areas are white, nearly islandka. 

 as in hastata. — In ab. infumata Prout both wings are almost uniformly smoky. — ab. clara Prout is a pretty infumata. 

 form with the whole distal area of both the wings whitish except a very narrow stripe of the dark ground- '^'^'"«- 

 colour which forms the distal boundary of the postmedian white band. — The larva of thulearia scarcely 

 difl'ers from that of hastata, but is in general blacker, less brightly marked. It feeds on dwarf birch and 

 Vaccinium, occasionally on sallow. The pupa hibernates and the moth flies from the end af May to the 

 beginning of July. 



C. naseraria Oh. (6e) differs slightly in shape from typical Eulype and was described as a Siona naseraria. 

 (Schistostege), but according to the essential structure it must be referred here. It is entirely without markings; 

 both above and beneath, excepting the conspicuously darkened veins. W. China: Ta-chien-lu; Tibet, 

 How-kow. June-July. 



C. defricata Pilng. Very distinct from all other known species, perhaps forming a new genus near defricata. 

 Hydrelia or Atopophysa, palpus as in the latter. Size of H. testaceata, apex more pointed, ground-colour rather 

 cleaner white, though similarly dusted, only the 2 principal lines brown, wavy, the first almost straight, the 

 second gently curved; discal dot black; the white outer band rather broad, bisected by a fine grey line, distal 

 area mixed with grey, a still darker oblique mark from apex, as in A. indistincta. Hindwing pale grey, weakly 

 marked. Forewing beneath dirty brown-grey, with the broad pale band indicated. Nikko, Japan, only the ? 

 known (not "cf", as originally published). 



Subgenus Epirrhoe Hbn. Areole single. Discocellulars not biangulate. 



C. brephos Ob. (13 a). Transverse lines of forewing obliterated or scarcely indicated, the only conspicuous brephns. 

 markings being an oblique narrow white postmedian band from the costal margin to the S'^ radial and a while 

 costal dot or vdy small spot near the apex; cell-dot indistinct. On the bright orange hindwing the lines are 

 restricted to the inner-marginal half. Forewing beneath orange to beyond the middle, cell- spot conspicuous, 

 connected by a dark mark with the costa; a dark angular postmedian band precedes the white band, which is present 

 as above; the fuscous distal area immediately follows the white band, but becomes much narrower in its 

 posterior half. Hindwing beneath as above. Central and W. China, How-kow and Koko-Nor. June-July. 



C, lamae Alph. (= nigrilinearia Leech, fausta Th.-Mieg) (II i, as nigrilinearia) differs in having the lamae. 

 lines and discal dot of the forewing better expressed, the median area broader, the white costal mark much 

 narrower and quite differently shaped, sometimes also with a dark dividing line. The lines on the hindwing are 

 thicker and more extended, the black distal margin somewhat broader. Ta-chien-lu, Omei-shan, etc. June — July. 



C. excentricata Alph. (81). Much smaller than brephos, the forewing above with quite the norma], excentricata. 

 Larentiid pattern. In shape, also, it is associated rather with the species which follow than with those which 

 precede. Both wings beneath orange, somewhat duller than the hindwing above, forewing apically and at 

 distal margin slightly more brown, hindwing and costal margin of forewing with weak indications of brown 

 transverse lines. Koko-Nor. 



C. virginea Alph., described as an aberration of the preceding, has the distal margin of the hindwing virginea. 

 more perfectly rounded, the forewing above darker brown (black-brown), beneath white with fuscous distal 

 area and with the other markings much stronger and more extended, the hindwing above and beneath white, 

 its fringe also white, weakly dark-spotted. Koko-Nor. 



C. castaria Leech (7 k) is very distinct in the largely white wings with black borders, the median band caslaria. 

 of the forewing being virtually suppressed. Under surface similar to upper, forewing with clearer postmedian 

 dark band, not connected in the middle with the terminal band, hindwing with black discal dot and indications 

 of postmedian line. Face smooth, protuberant; palpus rather small. W. China. 



