148 TENTHREDO PUNCTULATA. 



segment is a bright grey bordered triangle, close to 

 which is a darker spot. The back is mottled with 

 many dark spots and streaks ; on the end of these 

 there is on each segment a darker shade, and there are 

 likewise two transverse rows of white warts. In the 

 clear colour on the sides of each segment is found a 

 brownish stripe, besides many dots. Head shining 

 black, shortly pilose ; the face dark brown. 

 He says it is found in September and October. 



Tenthredo olivacea (Vol. I, p. 95). 

 This species has been found at York by Mr. Wilson. 



Rhogogastera (D. E. Z., xxviii, 338). 



Eyes parallel or almost parallel with one another, 

 not reaching to the base of the mandibles ; vertex 

 thick, much broader than long, the sutures distinct. 

 Antennae short, the third joint longer than the fourth. 

 Humeral cellule in hind wings appendiculate. Blotch 

 distinct. 



Tenthredo punctulata (Vol. I, p. 96). 



For the larva of this species I am indebted to Mr. 

 J. E. Fletcher, who found it on Gorylus avellana, 

 and I have had them figured on PI. XIII, fig. 4, 

 Vol. II. Brischke's figure and description do not agree 

 with mine. He describes it (1. c, iii, pi. vii, fig. 8) 

 as 20 mm. long, cylindrical, transversely wrinkled, 

 and bright grey, often varying into reddish ; the back 

 dirty dark green, and clearly separated by the white 

 stigmal line ; the stigmas themselves are black. On 

 each segment are two transverse rows of white warts 

 and many spots and dots ; the dorsal vessel, frequently 



