240 



ALLOTRIA PLEUBALIS. 



Wings large, considerably longer than body, nervures pallid testa- 

 ceous. 

 Length If mm. 



I first thought that this species was A. melanogaster, 

 Htg. (Germ. Zeit., ii, 200), but I am now inclined to 

 regard it as different. Hartig's description is short : 

 Rufus ; abdomine nigro, basi rufo ; thoracis dorso pie- 

 risque obscurato ; long J lin. Griraud supplements 

 this (Verb, z.-b. Ges. Wien, 1862, p. 129) by stating 

 that the radial cellule is " courte et assez petite, 5 ' and 

 that the cubitus is not indicated; and he gives the 

 length as 1 mm. for both sexes. We may therefore 

 say that A. megaptera differs from melanogaster in 

 the radial cellule being larger (not minute), and in 

 the cubitus being distinctly traced to beyond the 

 middle of the wing, and in being f mm. longer. 



In coloration it agrees very closely with A. halterata. 



Rare. Gadder Wilderness, Clydesdale. 



2. ALLOTRIA PLEURALIS. 

 PI. XY, fig. 8. 



Allotria plewralis, Cam., Trans. Ent. Soc., 1879, 113. 



Head pale red, the vertex slightly darker, the pronotum, mesonotum, 

 and base of median segment black ; the pleura, sternum, and apex of 

 median segment dark red ; abdomen black, reddish at the base above, 

 the basal half laterally more or less dark fuscous red ; legs pale yellow ; 

 wings clear hyaline, the nervures very pale testaceous ; radial cellule 

 small, scarcely longer than broad ; the basal abscissa of radius not 

 much shorter than the second. Antennae a little shorter than the 

 body, thickened towards the apex ; the basal four or fire joints pale 

 yellow, the others black, or rather dark fuscous. 



Length 1 mm. 



A. longipennis, Htg., comes near to this little species, 

 but it has the whole of the antennae and only the pro- 

 and meso-thorax reddish. A. postica differs in having 

 only the median segment red. A. ruficeps has not the 

 pleurse entirely rufous and the abdomen entirely black, 

 and the first abscissa of radius is longer. 



Clydesdale. 



