with pale yellowish white ; the tuft or tail black, the 

 middle part yelloAvish orange-red. 



One specimen was taken formerly by Mr. Francillon, 

 and one recently by Mr. Brewer; the latter and another 

 was said to have been taken at Haslor by Mr. Barren. 



The date of the appearance of the perfect insect is 

 at the end of June. 



/SESIA ICHNEUMONIFORMIS. 

 Plate VI. Figure 1. 



THIS insect measures from eight to ten lines in ex- 

 panse. Male: front wings transparent, brownish black 

 on the upper edge, the outer and lower edges yellowish 

 orange, the central bar orange and brownish black. The 

 hind wings have the fringe brownish black. The body 

 is black with six yellowish rings, the head and thorax 

 brownish black, the tail-tuft, which is narrow, black 

 with two narrow yellow lines. The female has seven 

 yellowish rings. 



Localities for this species are Scarborough, Char- 

 mouth, on the east cliff low down near the sea, Kingston 

 near Canterbury, Portland, Plymouth, Hastings, Ten- 

 terden, Charlton, Creak, Epping, Freshwater Gate near 

 Bristol, and the Isle of "Wight. 



The situations where it is found are among low vege- 

 tation, hovering on flowers, and is especially fond of 

 the scabious (Scabiosa succisa). 



Dates for the appearance of the perfect insect are 

 July and August. 



The name of this species is derived from the re- 

 semblance of the shape of its body to that of the 

 Ichneumon bees. 



