DIMORPHA VERSICOLORA. 251 



is strong and clearly marked. The oblique stripes are faint, except 

 the 7th (crossing the 7th and 8th abdominal segments) which is very 

 bold ; that portion of it on the 8th abdominal is bordered above by 

 a black stripe, apparently formed by an extension of the black 

 area at base of shagreen hairs. The scutellar plate is not notice- 

 ably different in colour from the general skin surface, but the anal plate 

 and plates on bases of anal claspers are free from shagreen spots and 

 oi a vivid green, bordered with cream-colour. The oblique stripes, 

 2 — 5, are faintly continued down the prolegs, and there is a ring of 

 deep orange just above the feet. Tubercles i are faintly traceable, the 

 dark spots of the 2nd instar can be discerned, and there is a little ring 

 of 4 or 5 shagreen hairs on the area, which, however, do not appear 

 to differ from the other shagreen hairs. One of the subspiracular 

 hairs is much longer than the others and belongs to that group 

 referred to iv in 2nd stadium. The position of iii can also be made 

 out, owing to the longer hairs, but that on i is indistinguishable 

 from the secondary hairs in size. The yellowish stripes down the 

 sides of the horn are still present, the horn is slightly notched 

 longitudinally at tip ; the hairs on it longer than elsewhere. The 

 spiracles are large, white, edged with black. Traces of a lateral 

 flange are present on the thoracic, but not on abdominal, segments. 

 The abdominal segments appear to be subdivided into 4 subsegments, 

 the anterior of which is much larger than the others. The true 

 legs are yellow-brown with black tips. Fourth stadium (well-grown) : 

 The larva is very short and plump, the head and thoracic segments 

 very small compared with the bulky abdomen. The dark band on head 

 is reduced to narrow line-like borders to the cream-coloured stripes. 

 The dorsal area of body a whitish-green, and quite free from the 

 dark spots surrounding bases of shagreen hairs that are still present 

 on lateral and ventral areas. The mediodorsal line distinct and 

 sharp, and the stripes stronger and clearer. The upper half of 

 the oblique stripes bordered with bright green, the lower half faint 

 except that of the last (7th), which is bordered above its lower half 

 with black. The short stripes up the sides of the horn strongly marked. 

 The lateral band on thorax is narrowly bordered above by a black 

 line. The shagreen hairs are now very small, iii is the only tubercular 

 group that can be discerned with tolerable clearness. The horn 

 still persists, and the mediodorsal line is black where it crosses 

 it. True legs yellowish. Feet of prolegs red (May 27th, 1900). 

 Fifth stadium (adult) ; Length i\ in. — 2-J in., greatest breadth -§ in. 

 or slightly over. Practically no difference from the fourth stadium, 

 the dark line on head greatly reduced and only apparent close 

 to the mouth ; the line on the ventral area of head still sharp 

 and clear. The double character of the horn still apparent at 

 apex. Spiracles white, edged with black (June 10th, 1901) (Bacot) . 

 On leaving the egg-shell, the larva is a stout and robust creature 

 of cylindrical figure ; the head, as usual at this time, the largest 

 segment, is of a dark black colour, with greenish mouth ; the body 

 velvety-black, with a dingy olive-greenish plate on the 2nd segment, 

 having a wide black dorsal division ; on the other segments are 

 olivaceous, greenish-yellow, tubercular warts, each anterior pair on 

 the back being distinctly larger than the others, which are very 

 minute, all bearing a few weak, soft, yellowish hairs ; a black dorsal 

 blunt projection is on the twelfth segment ; the anal plate and outer 



