122 SESIA FTJCIF0RM1S. 



small points ; the skin with eight folds to each seg- 

 ment, bearing dots, but really smooth ; the horn on 

 segment 12 rough, curved, and sharp at the tip ; the 

 general colour a beautiful green, the back whiter green, 

 with a dorsal line showing at the folds ; the subdorsal 

 line yellow, ending at the horn, which has the base 

 lilac, the middle claret-brown, and the tip brown ; the 

 spiracles bright rust-red in colour, with a white dot 

 above and below ; in one specimen the spiracles were 

 surrounded by reddish-brown pear-shaped spots ; the 

 belly red-brown, with a yellow line edging it, the anal 

 flap edged with yellow ; the head of a bluer green than 

 the body. The larva forms a very open cocoon on the 

 surface of the ground of dirty whitish and pinkish silk, 

 stuck over with bits of earth, &c ; the pupa is about 

 24 mm. long, cylindrical, stout across the wing-cases, 

 tapering to the head, which is conically rounded ; the 

 abdomen tapers off considerably to the tail, which has 

 a flat, triangular, sharpish spike ; the pupa-skin granu- 

 lated, but rather glossy, the colour rich brown, with a 

 blackish shade on the centre of each segment, and 

 blackish outlines to the wing- and antenna-cases. 

 (J. H., 18, 11, 86.) 



Sesia bombyliformis. 



Plate XXVI, fig. 4. 



Mr. Buckler figured this species on July 17th and 

 21st, 1866. The larvae were feeding on Scabiosa succisa, 

 and were sent to him through me by Mr. H. Doubleday. 

 I have never seen any other larvse, but in 1858 I took 

 the moth at flowers of red rattle during the last week 

 of May and the first week in June. The locality was 

 a rough field surrounded by woods ; the trees have 

 since been cut down, and the field ploughed up, and I 

 have had no other opportunity of studying this species. 

 (J. H. 18, 11, 86.) 



