NATURAL HISTORY SOCIETY OF GLASGOW. 109 



neuration agrees closely enough. Thomson quotes lineolata 

 doubtfully as a synonym, but this is certainly not the case, for 

 suhsermta has no middle cellule in posterior wings, the marginal 

 nervure is joined to the submarginal ; the pronotum is differently 

 coloured; the head is narrower and smaller; the antennae are, 

 if anything, longer, and have a longer pubescence; the joints 

 are more distinctly separated, and project at the apices under- 

 neath; the marginal nervure is joined to 3d submarginal; the 

 1st submarginal cellule is nearly square (in lineolata it is nearly a 

 parallelogram); the 2d is broader and very little shorter, con- 

 siderably angled where it receives the recurrent nervure (near 

 the middle of the cellule), while in lineolata it is received near 

 the base, and is scarcely angled ; the apex of abdomen is more 

 rounded ; the sheath of saw is longer and more projecting, and 

 the cerci are distinctly visible ; the base of the tarsi are more 

 broadly banded with white; finally, the wings are clearer, and 

 altogether it is a more slender and longer insect. 



In some observations on the spinose larvae of the oak-feeding 

 BUnnocampae (Ann. Soc. Ent. France (5), i., pp. 380-386), Giraud 

 says that B. lineolata is in all probability only a synonym of 

 B. hipundata. Such, however, is not the fact; the latter species 

 is larger; the antennae are shorter and thicker; the 3d joint 

 is longer in proportion to the length of the 4th ; the 3d sub- 

 marginal cell is shorter, and the 3d submarginal nervure does not 

 slope so much ; while there are the punctures behind the eyes, and 

 both sexes have a middle cellule in posterior wings. The male 

 of hipunctata has the antennae shorter, thicker, and more com- 

 pressed than mlineolata,?a\^ the femora are reddish, lined with black. 

 The British species of Blennocannpa with the tegulae and pro- 

 notum more or less white may then be diagnosed as follows : — 



A. Posterior wings %vith a middle cellule in both sexes, and a deep 

 puncture behind the eye. bipunctata, Klug. 



B. Posterior wings with a middle cellule in the female, none in male; 

 no puncture behind the eye. lineolata, Klug. 



C. Posterior wings without middle cellide in both sexes. 



3d and 4th joints of antennae almost equal; edge of pronotum broadly 

 white, base of legs white, abdomen as long as body in male; in female 

 longer than abdomen. akhemillae, n. sp. 



3d joint of antennae distinctly longer than 4th; edge of pronotum 

 scarcely white, legs black at base, antennae shorter than abdomen. 



suhserrata, Thoms. 



