XXIII. CELIA. 183 
scape and pedicel ferruginous or piceous (sometimes entirely 
black) ; a carina running in the middle of the face from the base 
of the clypeus, half way to the vertex, where it becomes an 
impressed line extending to the anterior stemma. 
Thorax punctured; the collar longitudinally striate ; scutellum 
quadrate, the incisure at its base consute ; the metathorax having 
a longitudinal carina on each side of the centre of its superior 
surface, which is enclosed by an elevated ridge, the interstices 
transversely striate ; the tegule testaceous ; the wings hyaline, 
iridescent, with the stigma and nervures black; the legs black, 
with the anterior tibiee and tarsi, the apex of the intermediate 
tibiee, and the whole of their tarsi, as well as the posterior ones, 
ferruginous, sometimes the intermediate and posterior tibize are 
of the same colour, and sometimes the tarsi only are piceous ; 
the tarsi and tibiz entirely simple. 
The abdomen subsessile, black, smooth, and shining; the 
margins of the segments sometimes piceous @. 
The ¢ differs in having the nasus very much produced, and 
bright yellow, as well as a large lobe on each side of it, extend- 
ing half way up the inner orbits of the eyes, sometimes merely 
the apex of the nasus, and the lobe within the eyes very small ; 
the clypeus and mandibles also yellow, the latter with their 
apex piceous; the antenne piceous, their scape and pedicel 
testaceous, the former yellow beneath, and those portions of 
the legs testaceous or yellow-testaceous which are ferruginous or 
piceous in the ¢. 
$ 2 in my own and other Cabinets. 
+4-- Mr. Walker has taken this species in the same lo- 
cality with the preceding, and also in the Isle of Wight. 
Mr. Stephens took it frequently in his windows at the 
Hermitage, South Lambeth, Mr. Westwood has taken 
it at Coombe, and I found a single ¢ this year (1836) at 
Battersea. 
