Manchester Memoirs, Vol. xliii. (1899), No. 3. 6"] 



covered with long, pale fulvous hair; the front and vertex 

 very shining, impunctate, the vertex thinly covered with 

 long, pale fulvous hair; the ocelli bordered laterally with 

 a deep furrow; the front without a distinct furrow. The 

 tips of the mandibles are deep black. Thorax shining, 

 smooth, except the depression at the base of the scutellum, 

 which is strongly crenulated. The mesonotum is slightly 

 covered with short, fuscous hair; its middle lobe is not 

 clearly defined ; the depression at the base of the scutellum 

 is strongly crenulated, except at the extreme base, where 

 it is smooth. The pronotum in the middle above is 

 broadly and distinctly raised and separated from the sides; 

 behind it is slightly incurved in the middle, with the sides 

 rounded. Pleurae thickly covered with long, pale fulvous 

 to golden hair ; the furrow on the mesopleurse is broad, 

 moderately deep, oblique, and with a slight curve; the 

 furrow on the meta-pleurse is curved, slightly narrower 

 than that on the meso-, and is bent sharply downwards in 

 front of the spiracles. Legs covered like the thorax, 

 except that the tibise and tarsi have a more yellowish, 

 paler hue, thickly haired, the hair on the front legs being 

 brighter and more fulvous in colour; the claws are black. 

 Wings very large, yellowish hyaline; the apex smoky in 

 both wings ; the apex of the stigma is black ; at its base 

 is a broad, deep, black spot, extending obliquely from the 

 costa to the recurrent nervure. Abdomen shining, smooth, 

 except for the securiform furrow; and paler, more yellowish 

 in colour, than the thorax ; the petiole smooth and shining ; 

 the raised middle narrowed and rounded at the base, from 

 which it becomes gradually wider to the apical third ; 

 from there it becomes gradually narrowed and rounded ; 

 the lateral depression on the second segment curved in 

 the middle, wide, deep in the middle, shallower at the 

 sides; the central keel is complete; the securiform articu- 



