50 [ August, 



1. Teichiosoma vitelline, L. 



The amount of reddisli colour on the abdomen varies considerably ; 

 sometimes the apical third above, the sides and the belly from base to 

 apex are reddish, sometimes only the sides and apex, and more rarely 

 the reddish colour is entirely absent. The latter is the case with all 

 the specimens bred from the larvsB figured on pi. x, figs. 14 and 15, 

 vol. i ; these also being much smaller (7 lines only) and more shining 

 than usual. In the (^ the hairs on the thorax and abdomen arc usually 

 more reddish or yellowish in tint compared wdth the female ; the middle 

 of the antennae is generally testaceous, seldom is it entirely black. 



This is the largest species in the genus, although very small spe- 

 cimens are also found. As a rule the reddish colour of the sides, 

 apex, and lower side of the abdomen readily separates it from lucorum, 

 but as this is not a constant character, and as the same colour also 

 occurs in lucorum, the most reliable point of distinction lies in the 

 abdomen of vitelline being much more shining and bronzy than in 

 lucorum, besides which, the hairs on the middle and apex are much 

 shorter, the colour of the hairs on the thorax and abdomen having also 

 a reddish tinge. 



2. Teichiosoma Scalesii, Leach. 

 = sorhi, Htg. 



The black hairs on the violet coloured femora easily separate this 

 rare species from vitelUnce ; it is also much smaller, and the hairs on 

 the abdomen are differently distributed and coloured, being long and 

 reddish at the base, short and fuscous on the middle, and longer and 

 yellowish at the apex, while in vitellince the colour is uniform and 

 they are scarcely longer at apex than in the middle. 



3. Teichiosoma lucoeum, L. 

 = laterale, Yoll. 

 The long grey hairs, nearly uniformly spread over the thorax and 

 abdomen, readily distinguish this common species. The abdomen is 

 often reddish beneath, at the sides and apex. 



4. Teichiosoma betuleti, K1. 

 Apart from the fuscous coloured tibia3, which separate it readily 

 from the other British species, hetuleti differs from lucorum (of w^hich 

 it is considered a var. by Thomson) by the reddish hairs on the thorax 

 and abdomen, and by the latter not being uniformly covered with hairs 

 of the same length. 



CLAVELLAEIA, Oliv. 

 Posterior coxae placed closed together ; labrum large, apex rounded, 



