226 BRITISH LEPIDOPTERA. 



measured from 3ms. to 3^ins. in length, and was, in proportion, a trifle 

 more slender than the larva of D. gallii, though otherwise similar 

 in form, being plump and cylindrical, tapering considerably from 

 the 4th segment to the head, which is the smallest segment, and 

 is rounded in outline, tapering a little also at the two hinder seg- 

 ments, the 12th having a rough, blunt-tipped horn, curving a 

 little backwards; each segment from the 5th to the 12th is sub- 

 divided into seven rings by well-defined wrinkles, the front ring 

 being equal in width to three or four of the others. The skin was 

 generally smooth and shining; the anal prolegs larger than the ventral 

 prolegs and of a squarish form ; the segments appeared more plump 

 and swelling on the ventral than on the dorsal surface. As to 

 colour, no two individuals were of the same type, the ground- 

 colour of the skin only varying in intensity from a bronze-green to a 

 deeper blackish-bronze. The head was blood-red, the mouth and 

 base of papillae pale yellow, the former margined above and below, 

 and the latter surrounded, with black ; the dorsal stripe was blood- 

 red in colour, widening on the second segment in a curve down 

 either side, suggestive of a plate, but thence continuing of nearly 

 uniform width to the anal flap, which was likewise red. The horn 

 was of the same colour, but glistening, and with the tip black. 

 In these larvae the subdorsal region bore a row of very blunt 

 wedge-shaped red marks, widest at the hinder part, and pointing 

 forwards, and a row of large roundish or dumpy pear-shaped bright 

 ochreous-yellow spots slightly tinged above with pink (on the 12th 

 segment of a longer pear-shape, with the stem pointing to the horn) ; 

 below these was another similar row, only paler and irregular in 

 shape from a fold in the skin, these spots, on each broad front ring, 

 being much surrounded with black ; below these were a few small 

 white dots, and then the whitish oval spiracle ; the narrower hinder 

 rings of each segment — whether in the red wedges or on the 

 ground-colour — bore transverse rows of thickly-set yellow dots ; 

 the puffed region below the spiracles showed red interruptedly, but 

 without any dots ; beneath this was a patch of the dark ground 

 colour sprinkled with white dots ; the tips of the ventral and anal 

 prolegs were blood-red ; the anterior legs were orange-ochreous tipped 

 with black. Two striking aberrations occur: (1) The form which 

 may be termed the red variety, from the great quantity of 

 this colour which it possessed, and which had the first or 

 broad ring of each segment of a black ground-colour, and 

 the narrow rings of a bronzy-green ; the wedge shapes of red 

 in the subdorsal region extended along each segment from their 

 greatest breadth at the last ring to the blunt apex close to 

 the broad front ring ; the dots ol yellow above and whitish 

 below, and the double series of large spots were as described 

 above; all the rings were abruptly interrupted by the inflated and 

 rather tortuous broad subspiracular region coloured red ; below this, 

 on each segment, came a pear-shaped patch of bronzy-green dotted 

 with white ; all the rest of the belly and legs were red, but inclin- 

 ing at the segmental divisions to deep ochreous or greenish-ochreous, 

 as the above-mentioned red wedge marks abo did at the same 

 place. There were a few yellow dots at the segmental divisions 

 in the subspiracular region ; the black plate on the second segment 



