FAMILY ZYGMNIDM. 39 



mesial ridge, continuous with that of the pro-thorax. The 

 scutellate clypeus is as Jong as the base is broad, the sides 

 narrow somewhat towards the square front edge. There is an 

 appearance of a short transverse oblong piece like that in the 

 pupa, (the clypeus-antenor Newport ?) to which are attached 

 the minute triangular labrum, and on each side are the mandi- 

 bles, whose form cannot be distinctly made out. Tlie space 

 between them is filled in with a piece whose surface is longitu- 

 dinally convex.* 



The eyes cover a much broader space than in the imago but 

 are flatter, from their under side depend the broad flattened 

 maxilhe, whose bases are excavated next the eyes, the inner side 

 being the longer, and between them is a minute triangular piece, 

 the homologue of which in the imago we do not know. They do 

 not extend along the abdomen quite so far as the antennae, 

 whose tips partially embrace them. The antennas are crossed 

 by the sutures which define the joints, which are very short. 

 Only two pairs of legs are exposed in the pupa. The hind pair 

 are long and narrow especially towards their base, while the 

 more anterior (probably the first pair) are twice as broad as 

 the others near their base. All these appendages with the wings 

 extend as far as the posterior edge of the fourth abdominal ring. 

 The wings are not broad, and the outer edge is much more 

 oblique than in Eudryas. 



The thorax is very short. Pro-scutum consisting of the two 

 scales united into one piece by a raised median line ; convex 

 behind, in front deeply excavated by a triangular incision. The 

 surface of the meso-scutum is very convex, the hind edge 

 rounded and encroaching deeply into the meta-scutum, which 

 is very short, expanding triangularly on the sides. 



On the sternal side of the ninth ring are seen the traces of 

 the genital armor of the imago, consisting of two triangular 

 pieces closely approximated upon the mesial line of the body, 

 appearing as if coming out from under the eighth ring, since 

 the ninth is carried under the preceeding one at this point. A 

 longitudinal impressed line in the middle of the tenth ring 

 marks the site of the anal opening. The two minute obtuse 



* The accuracy of this description of the mouth-parts will have to he tested 

 by renewed observations The supposed division of the clypeus into two pieces, 

 which do not appear in the imago, is of great interest in a morphological 

 point of view. 



