12 Mr. G. C. Champion and Dr. T. A. Chapman's 



assumes its globular resting attitude. The prothorax is 

 3.5 mm. wide, narrowed in front, smooth and shining; 

 except on the head and at the margin of the plate, the 

 larva is glabrous, these parts carrying some short hairs. 



The tips of the jaws, some of the mouth -parts, and 

 portions of the leg-plates are dark brown. The six eye- 

 spots are black, the spiracles are dark. The prothoracic 

 dorsum looks smooth and shining. The abdomen is much 

 less so, as each segment is not only divided into two 

 subsegments with subsidiary depressions, but each sub- 

 segment is minutely wrinkled. 



The subsegmentation dorsally presents a transverse de- 

 pression across the middle of the segment, which hardly 

 passes the spiracle and has a ridge from the anterior sub- 

 segment passing down into it about half-way from dorsum 

 to spiracle, or the groove dividing the subsegments may 

 be described as sending a branch into the anterior sub- 

 segment, whilst the main groove takes a rather more 

 posterior position for a space. 



It is no doubt a further development of this that makes 

 the peculiar subdorsal angle in the larva of 0. cacaliee. 



Below the spiracles is a double ridge or flange, the 

 incision between the two ridges (or portions of the ridge) 

 being rather deep. Ventrally the cuticle is thin and 

 transparent, allowing the tracheae, etc., to be seen. 



In the young larva the eye-spots are in two rows of 

 three each, the three pairs being symmetrically placed. In 

 the adult the four upper eye-spots are placed as a square. 

 The antenna is as it were wedged in partially between 

 these and the two lower ones, so that the posterior one is 

 pushed downwards and backwards to a slight degree, the 

 first one considerably so, and is in fact below the antenna. 

 The antenna is placed in a large circular hollow, into 

 which it is capable of being completely telescoped, each 

 segment inside the preceding. It looks as if formed of 

 four joints, the last being very small, the whole length of 

 the antenna being little longer than its width at base. 

 It has, however, only three joints : first, a soft membrane 

 that allows of the greater part of the collapse of the 

 antenna, when expanded it is half the length of the 

 antenna, conical and ends in a dark chitinous ring (the true 

 first joint?); then a more cylindrical piece, as long as broad, 

 dark and with a narrower colourless membrane to allow 

 of its partial retraction into the first segment; then a 



