414 Timehrr. 
Mutilla longilineata sp.n. 
Black, the thorax red except the mesopleure, the apex of the scape and the 
pedicle of the antennz rufous ; the uncer side of the 8 or 9 apical joints dark 
reddish brown: the apex of the basal 2 abdominal segments, a line on either side _ 
of the middle of the 2nd segment and lines down the sides of the 3rd to 6th, 
the apical pair wider than the others. Head a little wider than the thorax, 
the thorax twice longer than wide, the base distinctly roundly narrowed, the 
apex bluntly rounded, almost transverse, the basal third above slightly wider 
than the midcle, the apical slope straight, oblique. There is a transverse, 
curved keel on the base of the metanotum in the centre. The base of the Ist 
abdominal segment has a triangular projection on either side ; the ventral 
keel is depressed in the middle, the apex forms a triangular, reddish tovth, 
Pygidium finely, closely longitudinally striated, the strie interlacing. Tibial 
spines black, the tarsal and the spurs white. The basal and apical abdominal 
segments and the sides of the others are covered with longish white, the 
central part of the 2nd to 5th dorsal segments are closely covered with short 
black pubescence. Female. 
Length 7 m.m. 
The mesonotum is more strongly, rugosely punctured than the head. 
Antennal tubercles dark red. punctured. Pleuree smooth, except round the 
top of the pro and metapleure. 
Ephuta sphegea, ¥. 
Mutilla argentea, Lep., Hist. Nat. Ins. Hymen., iii., 636; Mutilla argyra 
Spin, Ann. Soe. Ent., Fr. x., 85: Mutilla sphegea, Gerstaecker, Arch. f. Naturg, 
XExv.. SLY! 
What I make out to be the above species has been taken by the Rev. Mr, 
Harper at Demerara. The cloud in the apex of the wings commences at the 
end of the radial cellule. fills the 2nd cubital except a triangle at the base in 
front and below, extends shortly behind the 2nd recurrent nervure ; the radial 
cellule is short, its apex truncated ; the 2 first transverse cubital nervures 
approach closely to each other in front ; the 1st long, its apical three-fourths 
obliquely sloped; the 2nd is broadly, roundly curved; the Ist recurrent 
nervure is received at the apex of the basal third, the 2nd in the middle of the 
cellule. Apex of scutellum distinctly trilobate, the middle lobe twice wider 
than the lateral, its apex broadly incised, the hair on the mesonotum is dense, 
stiff and long. Head narrower than the thorax. The apical half of the 
ventral keel projects into a large, triangular keel. 
This species agrees fairly well with the description of argentea, so far as it 
goes, except that the wings are described as ‘* transparent at the base, the end 
largely black ”’ ; in my species I should call them “ hyaline, the apex smoky.” 
No mention is made of the apex of the scutellum being trilobate, nor of the 
form of the ventral keel. 
