DYAR: LARVAE OF THE HIGHER BOMBYCES. 
143 
Dasychira fascellina, Linn. 
As above, but wart iv still smaller, and the brush tufts are con¬ 
fined to joints 5 to 9 and 12, leaving a space to exjmse the retractile 
tubercles. D. selenitica has the same characters with the addition 
of a pair of hair pencils on joint 2. Wart iv is rather large, as in 
D. rossii. 
Dasychira pudibunda, Linn. 
Wart iv rudimental or absent. The brush tufts are confined to 
joints 5 to 8 and 12, widening the space in which the defensive 
glands are placed and rendering the tufts themselves more promi¬ 
nent. A hair pencil on joint 12, but none on joint 2. 
A 7 otoloplius ericiae , JV. leucostigma , JV. vetusta, etc., as well as 
Calliteara abietis have the same characters with the addition of 
hair pencils on joint 2. JV. antiqua has still another pair on joint 6. 
Leucoma chrysorrhoea, Linn. 
Warts i and iv absent, but the upper three on the thorax all dis¬ 
tinct, equal. Hair not abundant, the pencils absent, and the brush 
tufts rudimentary, indicated only on joints 5 and 6 by tufts of close, 
short, feathery hairs, scarcely thicker than those from the other dorsal 
warts. The body has a fine coating of small, very fine, secondary 
hairs, indistinguishable without a lens. Certain of them at the upper 
edge of wart iii are short and feathery like down and colored white. 
Leucoma similis, Fuessl. 
As above, but the upper wart on thorax is smaller than the other 
two. The fine secondary hairs are present and the rudiments of the 
brush tufts are distinctly confined to joints 5 and 6. The curious 
white, downy, secondary wool occurs on little patches in the subdor¬ 
sal region between warts ii and iii. 
Hypogymna morio, Linn. 
This degenerate larva possesses well developed warts but i and 
iv on the abdomen are entirely absent, as well as the upper wart on 
the thorax. There is no trace of brush tufts or pencils, and the 
whole wart arrangement is quite indistinguishable from that of the 
Nolidae. However, the feet are normal, and the two retractile 
tubercles are well developed. 
I have arranged the tufted species beginning with Dasychira 
rossii in the order which seems to me most probable, namely, a 
general tufting gradually reduced and specialized. However, the 
ontogeny of Notolophus indicates that the order should be reversed. 
