EUCLIDIA MI. 131 



defined ornamentation ; the ground-colour being as 

 on the dorsal area, and having a central, then a 

 double, followed by another double line, all of choco- 

 late-brown. 



The habits, perfect manner of looping the back 

 when walking, feeding, and everything else are ex- 

 actly as in a geometer ; and were it not for the 

 additional pair of ventral legs it would be impossible 

 to separate it from a geometer. 



The adult larva I described on the 6th of September 

 as follows : 



Length about one and a half inches, and, although 

 still rather slender, is considerably stouter in propor- 

 tion than when last described ; head larger and slightly 

 wider than the second segment ; body cylindrical above, 

 a little flatter ventrally ; it is of nearly uniform width 

 to the ninth segment, but this and the tenth are a 

 little wider ; from the tenth it tapers more strongly 

 to the anal extremity ; skin smooth, the segmental 

 divisions clearly defined but not deeply cut, and there 

 is a very slight rather puckered ridge along the 

 spiracular region ; there are only three pairs of ventral 

 legs, on the ninth, tenth, and thirteenth segments 

 respectively ; the last pair, when at rest, are stretched 

 backwards and outwards, and give the appearance 

 of being a notched anal prominence. Ground-colour 

 bright lemon-yellow, some specimens having an ochre- 

 ous tinge ; the same pretty ornamentation of stripes 

 still remains, as follows : — First, a fine double and 

 rather irregular pale chocolate-coloured medio-dorsal, 

 followed by two broader and darker chocolate, then 

 two more equally broad ones of the paler chocolate, 

 followed by a narrow one of a darker shade of the 

 same colour, and closely followed by a still darker one 

 immediately edging the pale, bright, lemon-yellow, 

 broad, spiracular stripe ; these stripes extend in strong 

 relief through the head down to the mandibles, and 

 the whole ornamentation, taken with the ground- 

 colour, forms a series of alternately chocolate-brown 



