THE PLTJME-MOTHS OF CEYLON. 
155 
previously pointed out, the Orneodidae have no real relationship, 
although both groups are popularly included under the same 
trivial name of “ Plume-moths.” 
The pupa of 0. hexadactyla is brown, and resembles in its external 
appearance the pupae of the true Noctuids, Pyralids, and Tineids ; 
it is short and squat, and (without regard to minute single hairs, 
only visible under high magnification) is smooth and glossy. In this 
respect alone it is strikingly different from the Pterophorid pupa. 
“ The head-plate (Cephalotheca) is strikingly large (as in many 
Pyralids and Tineids, whilst in the Pterophorids it is very small). 
On the lower side of the head-plate upper groove (‘ Oberlippe ’) and 
upper jaw (‘ Oberkiefer ’) are clearly marked, the labial palpi on the 
contrary only small and indistinct between the roots of the long 
maxillae ; no traces of maxillary palpi are present. The very slender 
prothorax, as well as the mesothorax and metathorax, correspond 
in their proportions to those of the imago. 
Figure 3. 
Pupa of Orneodes hexadactyla (after Chapman). 
“ The forewing-covers are broad with stumpy tips forming almost 
a right angle, and reach as far as the posterior margin of the fifth 
abdominal segment; they are free at their outermost extremity ; 
through the covers are clearly seen the six segments of the wing as 
so many dark streaks, segments 1 and 2 connected at their bases, 
as are also 3, 4, and 5, but 6 quite free. 
“The hind wings are long and slender, and first disappear under 
the forewing-covers at the posterior margin of the fourth abdominal 
segment. 
“ The antenna-sheaths are as long as the fore wing-covers; the 
sheaths of the first and second pairs of legs on the contrary are 
shorter; of the first, the sheaths of the trochanters and femora 
(‘ Hiiften ’) occupy a comparatively broad space between the 
maxillae and second pair of legs. The third pair of legs lies under 
the second, and projects freely a little above the wings up to the 
posterior margin of the sixth abdominal segment. 
