54 [August. 



The egg was often found on the upper-side of the leaflets of 

 parsnip (Pastinaca sativa), but always singly. It bears a curious 

 resemblance, in its shape and irregularly roughened surface, to a 

 minute orange : its diameter being about one thirtieth of an inch, and 

 its colour pale cinnamon-brown. 



The newly-hatched larva is about two lines long, nearly black, with 

 a pale V mark on the face, and a light brown saddle-shaped spot on the 

 8th segment : a large black tubercle on either side of the swollen 3rd 

 segment, and one on either side of segments 4 to 13, gradually de- 

 creasing in size to the 12th segment, that on the 13th being nearly as 

 large as the one on the 3rd. These tubercles are covered rather 

 thickly with long black hairs. 



On the 8th day, the larva was 7 lines long ; the tubercles were 

 still distinct, but the skin was slightly shining, and entirely destitute 

 of hairs : colour brown-black, with a short, lateral stripe on segments 

 2 to 4 ; a large lozenge-shaped spot on either side of segments 6 to 

 8 (the hinder angles meeting on the back), and an irregular cloud on 

 the sides of segments 12 and 13, pale whitish-ochreous : prolegs 

 whitish. 



At the penultimate moult, the larva was 10 lines in length : the 

 above markings more distinct, the 4th, 5th, and 12th segments more 

 conspicuously swollen than at any other stage. The skin was then 

 very shining, and the resemblance of the creature to a piece of fresh 

 moist bird's-dung, was most extraordinary. 



The full-fed larva is by no means easy to describe, but the 

 following is an attempt : — Length, about two inches. Head small, 

 rather dark shining grey-brown : the segments rapidly increase in size 

 to the 4th and 5th, w^hich are quite half as large again as any of the 

 others. This enlargement is very conspicuous when the larva is at 

 rest, the anterior segments being retracted after the fashion of a 

 Ghcerocampa larva. , The 6th segment is abruptly smaller, and thence 

 to the hinder extremity, the body is almost uniform in size, the 12th 

 segment only being A^ery slightly enlarged. The front edge of the 

 4th segment is rather raised, and extended forwai'd, bearing a curved 

 transverse row of five small pale-edged tubercles. Colour (in a fully 

 marked specimen), rich umber-brown, marbled with paler, darkest on 

 segments 2 to 4, and 8 to 12. A^broad, irregular, lateral, crcamy- 

 ochreous stripe, sometimes slightly tinged with pink, meeting in front 

 of segment 2, W'ell-dcfined on segments 3, 4, and 5, it then expands 

 into a large, iri'egular, rhomboidal blotch, the hinder angles of which 

 unite on the back of segment 9 ; thence the stripe is rather ill-defined, 



