tUMORPHA VERSICOLORA. 249 



abdominal is strongly humped (almost a short stout horn) ; the 

 anal segment bears three plates, one above and one on either side 

 of the anal orifice. Tubercles iv and v are now clearly separated on 

 lateral flange of abdominal segments ; on the 8th abdominal one 

 of the setae belonging to iii is slightly apart from tubercle, and has a 

 distinct chitinous button ; marginal tubercles (vii) present, but no trace 

 of vi; setae of v have, on some segments, distinct and separated chitinous 

 buttons at base, e.g., on the 6th and 7th abdominal segments the 

 hairs are a short but distinctly perceptible distance apart (May 5th, 

 1900). Second stadium (fairly grown) : Length 14mm. Body of 

 fairly even thickness except 7th and 8th abdominals, which are some- 

 what smaller than the 5th and 6th ; the body tapers gradually from 

 metathorax to head, the latter rather large (very large, directly after 

 moult), the 8th abdominal bearing a tall pyramidal hump giving rise to a 

 short blunt horn. Head squarer in shape but still rounded, slightly 

 notched at crown ; slopes back at an angle of about 45 ; pale 

 cream in colour with a slight greenish tinge ; clypeal triangle bright 

 green ; a broad black band on either lobe at crown, tapers down- 

 wards to base of antenna ; a similar black band down either cheek, 

 the surface of head smooth and dull ; hairs short, but numerous. 

 Body : scutellar plate still apparent, chiefly because it bears very small 

 black spots ; ground colour pale sea-green, thickly covered with 

 black pigmented areas surrounding the bases of shagreen hairs on 

 ventral as well as on lateral and dorsal areas. These dark spots 

 poorly developed or absent on the area of the cream-coloured 

 stripes ; a distinct dark mediodorsal stripe*, starting behind 

 head and ending at anal plate (passing up the front and down 

 the back of the horn on the 8th abdominal segment) ; the anal 

 plate of a somewhat brighter tint than rest of larva and edged by 

 a narrow cream-coloured border ; a short subdorsal cream-coloured 

 band crosses the proihorax and is faintly continued as far as the 

 metathorax (this is apparently a continuation of the pale area between 

 the dark stripes on the head) ; a broad vivid cream-coloured lateral 

 band starts on prothorax and ends at beginning of 1 st abdominal ; in 

 addition to these short subdorsal and lateral bands there are 7 

 oblique stripes on either side, sloping from head to anus (the 

 opposite direction to those of Sphingid larvae) at an angle of 

 45 , an additional short one at base of horn ; and a very faint 

 trace of yet one other on the metathorax and 1st abdominal; 

 each stripe runs over two segments, the first over abdominal segments 

 1 and 2, the second over 2 and 3, and so on. These oblique stripes in- 

 crease in strength from the first (weak) to the 7th (strong). Tubercle i, 

 represented by a group of 5 hairs, is not raised perceptibly above the skin, 

 each hair has a separate black chitinous button at its base, surrounded, 

 as are the other shagreen hairs, by a pigmented skin ' area ; these 

 hairs are arranged in a ring, the skin immediately surrounding them 

 being free from shagreen hairs, and serves them as a background, 

 whilst an additional prominence is given by the oblique stripes ending 

 in the open area, surrounding the spot ; the number of setae in the 

 spots (representing i) is variable; in one larva examined, on the 3rd 

 abdominal segment, the right hand one bears 4, whilst that on the 

 left bears 5, setae ; and on the 2nd and 4th abdominals, there are 4 



* This dark mediodorsal stripe is a coloured streak and not merely a 

 massing of the hairs and spreading of the pigmental areas at their bases (Bacot). 



