ALLOTRIA MULLENSIS. 247 



A. brews, Thomson (Oef., xviii, p. 408, No. 9), 

 comes very near this species, but it has the antennae 

 only the length of the thorax. 



Rare. Clydesdale, Dumfries. 



14. ALLOTRIA COLLINA. 

 PL XVI, fig. 10. 



Allotria collina, Cam., Mem. Lit. Phil. Soc. Man. (4), ii, 57. 



Black, the oral region, the thorax and base of abdomen castaneous; the 

 basal four joints of the antennae and legs pallid testaceous, the femora 

 inclining to castaneous ; wings hyaline, the nervures fuscous. Antennae 

 nearly one-half the length of the body, thickened gradually (but not 

 strongly) towards the apex ; the third joint not much longer than the 

 second ; the last longer than the penultimate, Radial cellule elongate, 

 the third abscissa of radius two and a half times the length of the 

 second. 



Length f mm. 



Most nearly related to A. dolichocera, but easily 

 known by the castaneous thorax and base of abdomen, 

 by the more slender and, if anything, longer antennae, 

 by the clear colour of the legs, and by the more elon- 

 gated radial cellule. 



Rare. Dumfries. 



15. ALLOTRIA MULLENSIS. 

 PL XVII, fig. 1. 



Allotria Mullensis, Cam., Trans. Ent. Soc., 1883, 366. 



Black ; head dull ferruginous, vertex piceous, as is also the pleura ; 

 basal five joints of antennae pale testaceous, the rest fuscous ; legs dull 

 testaceous, the coxas and femora fuscous. Third joint of antennse 

 longer than the fourth ; joints three to five thin, the others much 

 thicker and becoming thicker towards the apex ; the last joint one-half 

 longer than the penultimate. Median segment and coxae covered with 

 dense white pubescence. Wings hyaline, the base yellowish ; nervures 

 pallid yellow ; the radial cellule truncate, almost semicircular, not much 

 longer than broad ; nervures thick ; cubitus shorter than the length of 

 radial cellule ; fringe on wings long. $ . 



Length f mm. 



In this species the radial cellule is smaller than in 



