STRONGYLOGASTEE FEMOEALIS. 191 



anterior femora and the posterior almost wholly black (teste C. G. 

 Thomson). 

 Length 3J 3| lines. 



Not very common in Clydesdale during May and 

 June. What I take to be its larva is figured on PL 

 I, fig. 6. It is very like that of delicatulus, but 

 scarcely so hairy, and the head is entirely green. 



Continental distribution : Sweden, Germany. 



6. STRONGYLOGASTEE FEMOEALIS. 

 PL XI, fig. 2, ? . 



Strongylogaster femoralis, Cam., E. M. M., xi, 250 ; Fauna, 18, 



3; Andre, Species, i, 413; 

 Cat., 51,* 4. 



Antennae filiform, black, shorter than the thorax and abdomen. 

 Head shining, smooth, black. Thorax black, shining, glabrous ; pro- 

 notum broadly edged with sordid white ; tegulse white ; cenchri small, 

 obscure white. Abdomen black, less shining than the thorax ; four 

 middle segments red above and beneath, but faintly edged with black 

 at the sides ; the apex acuminate ; cerci moderately long. Wings 

 hyaline ; nervures, costa and stigma black ; the transverse radial nervure 

 is received some distance in front of the third transverse cubital one ; 

 accessory nervure in hind wing not appendiculated. Legs sordid 

 testaceous ; the femora black, except at the apices and at the base of 

 the posterior pair ; the knees have a yellowish hue ; hinder tibiae darker 

 than the four anterior ; posterior tarsi fuscous. 



The < has the antennae as long as the body ; the anterior femora at 

 the base and the posterior almost wholly fuscous-black. 



Length 3| lines. 



Femoralis is most nearly related to maculus, but 

 differs in its narrower, more cylindrical body, the head 

 and thorax more shining, less pubescent, in the 

 abdomen being distinctly banded with red, and in the 

 black coxe, femora and mouth; the third joint of 

 antennae appears to be shorter and thicker in propor- 

 tion to the fourth. It also differs from maculus (and 

 also miztus) in the basal cellule being shorter, and in 

 the transverse median nervure being received not far 

 from the middle of the cellule, while in the other two 

 species it is received much nearer the apex. The 

 third cubital cellule, too, is distinctly longer than the 



