12 BRITISH LEPIDOPTERA. 



fainter on thoracic segments, and ending just behind the scutellar 

 plate ; a broad, vivid, yellow subspiracular band is present, and 

 the anal flap is edged with the same colour ; on the thoracic and 

 ist abdominal segments this band is situated on a raised fold 

 or flange of the skin ; there is a tendency in many larvae for the 

 spiracular yellow band to be shaded above and beneath with a 

 dusky reddish hue. The horn is sharp, slender, blue-green in 

 colour, with black tubercular hair-bases for about four-fifths of its 

 length ; the remainder (apex) is orange-yellow, and the hairs on 

 this portion without dark bases. Spiracles edged with a black 

 chitinous rim, and, excepting the prothoracic, which are whitish, they 

 are almost black, although a little white is noticeable within the 

 dark rim in some larvae. The shagreen hairs are now very fine 

 and weak, surrounded by a coloured skin-area of greater or less 

 extent ; above the spiracular band these are white (often very 

 brilliant), those below the band are yellow ; none of the shagreen 

 hairs are forked in this stage. A very faint mediodorsal line may 

 be detected. The true legs are reddish-brown ; the extremities of 

 the prolegs are pink ; above this pinkish area is a bright yellow 

 stripe on the outer side of proleg, and above this again a black 

 dash (August 3rd, 1900). Another adult larva is bright green, 

 with a yellow subdorsal band and a whitish-yellow lateral band below 

 the spiracles. The horn well-developed, blue .0 within one-third of 

 tip, then a ring of black, the tip yellow ; the anal flap outlined in 

 yellow ; tbe spiracles black, the skin round the bases of shagreen hairs 

 white, giving the larva a speckled appearance. [On the whole the 

 appearance of the larva is rather Amorphid than Eumorphid.] The 

 subsegments clearly defined, 8 on the abdominal segments, the 

 first three not conjoined to make one enlarged ist subsegment, as in 

 larva of Theretra porcellus. The shagreen hairs arranged on the 

 top of the subsegments, as in Amorphid larvae; they are short 

 and rather curved at tip; on the horn they are larger and straight; the 

 tubercular bases of the hairs on the horn form tall black cones, giving the 

 horn a very rough and thorny appearance. The thoracic segments taper 

 much towards the head, which is small, and somewhat squared in outline 

 (Bacot). The fullg row n larva is about 45mm. long, stout, but tapering 

 from segment 5 to the head, which is small and rounded ; on segment 

 12 is a short, stiff, rough horn with sharp point; the skin with 

 eight subdividing folds to each segment, set with rough points ; 

 the colour either a dull grey-green or dull brown, with a darker shade 

 of the ground colour along the middle of the back ; a well-defined 

 whitish subdorsal line, edged above with a rather darker tint of the 

 ground colour; a subspiracular yellowish line, the spiracles black, the 

 points on the skin white ; the horn bluish at the base, yellow at the tip 

 (Hellins). The dominating colour of the fullgrown larva is bright green, 

 approaching celadon, the ground colour sprinkled all over with 

 white dots, and with two lateral white lines one above the other, 

 which descend insensibly from the head to the middle of the body, 

 and then ascend slightly, one to the caudal horn, the other to the 

 anal plate; after retaining these tints for some days, the larvae 

 were observed one morning to be oi a beautiful vinous-brown tint, 

 the dots remaining whitish, but the lateral lines changed to yellowish- 

 red, this great change having occurred in less than 24 hours without 



