366 LYCENlD.i:. 
Thecla percomis, sp. nov. (Plate xxix. fig. 5, j .) 
Male. Erowuisli black. Sexual mark small but distinct. Primaries have a large, somewhat 
triangular, orange patch on the lower half of the wiug intersected by the median nervules 
and the submedian nervure. Secondaries have a broad orange band, intersected by the 
nervules, on the lower half of the submarginal area, and a few blue scales at anal angle. 
Fringes of the ground-colour. Under surface fuliginous : primaries have an interruijted, 
oblique, silvery-blue, central line, which terminates on the submedian nervure, in close 
proximity to the submarginal line ; the latter represented by three linear silvery-blue spots 
edged outwardly with black : secondaries have an oblique silvery-blue central line, which is 
indented just below costa, and forms a W before terminating on the abdominal margin ; sub- 
marginal line composed of a series of silvery-blue crescents, edged outwardly with velvety 
black, as far as the submedian nervure, from whence it runs parallel with the central line to 
abdominal margin ; there is an orange band ou the lower half of submarginal area; the anal 
lobe is velvety black, as also is a spot placed on the margin in first median interspace, the 
space between this spot and the anal lobe is also black but less intense; marginal line 
silvery blue, only distinct towards anal angle. 
Expanse 36 millim. 
One specimen taken at Omei-shau by a native collector in July, at an 
elevation of 4000 feet. 
This species seems very distinct on the upper surface from any Thecla 
knovs'n to me ; on the under surface, however, it agrees in some respects Avith 
T. v-albiim, but the ground-colour is darker, the markings are silvery blue in 
colour, and the central line of primaries is oblique, not curved as in 
T. v-album. 
Thecla cenone, sp. nov. (Plate XXIX. figs. 6 d' , 9 ? .) 
Male. Fuliginous-brown, with a cupreous tinge ; the sexual glandular patch on primaries is small, 
but well defined. Secondaries have two black spots, bordered internally with fulvous, above 
anal angle ; a white marginal dash, most distinct towards anal angle. Tails slender, black, 
narrowly tipped and partially edged with white. Under surface fuliginous grey : the 
primaries have an oblique white line, formed of five crescents, extending from near costa to 
first median nervule, and a submarginal series of black spots, externally bordered with whitish, 
but not well defined towards costa : secondaries have a central white line, interrupted by the 
nervules and forming a W before reaching the abdominal margin; submarginal series of 
black spots encircled with whitish, the sixth bordered with fulvous and followed by another 
black spot placed nearer the margin, the seventh is double, and its lower edge bordered with 
fulvous ; anal lobe black, with a dark patch powdered with bluish scales above it ; marginal 
line whitish. 
Female. Browner than the male ; all the wings have a falvous submarginal band which does not 
reach tlie costa. Under surface as in the male, but the submarginal spots are better defined ; 
the white transverse line on primaries runs almost parallel with outer margin as far as the 
first median, from whence it is angulated inwards to the submedian. The anal extremity of 
the abdomen is ornamented with a tuft of velvety -black closely compressed hairs. 
Expanse 37 mUlim. 
