NATURAL HISTORY SOCIETY OF GLASGOW. 23 



tegulae testaceous ; costa and stigma dark-fuscous. Near the base 

 of the second sub-marginal cellule is a small dark spot. 



Length 2J to 3 lines. 



The male is similarly coloured, but with the antennae deeply 

 pilose, and with the usual process on the 3d joint. 



Larva green, thinly haired, with the sides raggedly indented. 

 Head yellow, with the eyes and a spot on the vertex black. 

 Young individuals bear a brown cross-band on the front. Length 

 8 to 9 lines (Kaltenbach). 



It lives on high elms, eating smaller and larger holes in the 

 leaves, and resting usually on their under surface. It spins a clear, 

 transparent cocoon, which is either fastened to a leaf or a branch. 

 There are two generations in a year. Brischke records MesoliiLS 

 impressiis, Brischke, as its parasite. 



C. riifipes is common in the midland and southern counties of 

 England, but I have not yet found it in Scotland. It is met with 

 all over Europe. 



4. Cladius eradiatus. 



Cladius eradiatus, Hart., Blattw., 176, 2; Thoms., Hym. Scand., 

 i., 72, 3; Kalt., Pfl., 288. 



Antennae moderately long, densely pilose, black, the third joint 

 curved. Head black, covered with a fuscous pile ; clypeus some- 

 what emarginated, labrum and palpi piceous. Thorax black, 

 shining, covered with a fuscous pile ; tegulae black ; abdomen 

 black, also covered with a fuscous pile ; membrane at the base 

 large; cenchri white; cerci short. Wings almost hyaline, stigma 

 fuscous. Feet : femora, coxae, and trochanters black ; knees, 

 tibiae, and tarsi fuscous-white, paler in front, and covered with a 

 pale pile. Length 2 J lines. 



The male does not differ in colour from the female, and is 

 easily known by the form of the antennae. 



Hartig describes the wings of eradiatus as " dunkel-rauch-grau ;" 

 and Thomson, as " hyalinis ;" and hence there may be two species 

 described under this name. British specimens have the wings 

 almost hyaline, slightly suffused with grey. 



From the female of dlfformis, eradiatus is known by its more 

 attenuate antennae, uniformly coloured wings, and fuscous-white 

 tibiae and tarsi ; from BriUlaei, the colour of the wings will serve 

 to distinguish it. 



