252 ALLOTRIA MACULICOLLTS. 



thicker and more curved ; the legs are clear yellow, 

 not reddish-testaceous ; the abdomen is larger com- 

 pared to the thorax, and the radial cellule is wider. 

 Common in Scotland from Loch Awe to Dumfries. 



20. ALLOTRIA BASIMAOULA. 

 PL XYIT, fig. 8. 



Allotria basimacula, Cam., Fauna, 87, 18. 



Black ; the head (the vertex obscured with black or dark castaneous) 

 and base of abdomen red ; the basal five joints of antennae and legs 

 yellow ; wings hyaline, nervures testaceous ; median segment and base 

 of abdomen densely covered with long white hair. Antennae a little 

 longer than the body, stout ; the fourth joint longer than either the 

 third or fifth ; last joint about one-fourth longer than penultimate. 

 Radial cellule elongated, of moderate length ; the basal abscissa scarcely 

 twice the length of apical and not much curved ; cubitus obsolete. ? . 



The $ has the antennae longer, and with the fourth and fifth joints 

 slightly curved and thickened, the third shorter than the fourth ; the 

 femora are darker, the yellow being suffused with fuscous. 



Length scarcely 1 mm. 



May be known from A. filicornis by its smaller size, 

 by the thicker antennae, which become perceptibly 

 thickened towards the apex, and by the narrower radial 

 cellule. The d has the antennae shorter, and has the 

 third joint shorter than the fourth. 



Glen Lyon, Perthshire; Mugdoch, near Glasgow. 



21. ALLOTRIA MACULICOLLIS. 

 PL XVII, fig. 6. 



Allotria maculicollis, Cam., Fauna of Scot., 87, 16. 



Black ; head red ; antennas and legs yellow, the apex of antennae 

 inclining to fuscous ; a large obscure red mark on the sides of pro- 

 thorax ; wings hyaline, nervures fuscous ; median segment, scutellum, 

 and base of abdomen densely covered with longish white hair. 

 Antennae nearly one-fourth longer than the body, attenuate ; the last 

 joint compressed, longer than the penultimate ; fourth longer than 

 either the third or fifth. Radial cellule broad, short ; the apical branch 

 of the radial nervure curved, scarcely twice the length of the oblique 

 basal abscissa, which is hardly one-fourth longer than the cubital 

 branch ; cubitus scarcely reaching to the middle. Besides the reddish 



