~I 
bo 
PERCY SLADEN TRUST EXPEDITION. 
9. Odynerus cylindricus, Pérez. 
Ann. Soc. Ent. Fr. Ixiv. 1895, 207. 
Localities, Seychelles, Praslin, Mahé. Amirantes, Poivre, Darros. 
The male not having been described I give a description of it:—Black, the clypeus, — 
labrum, mandible (except at the apex), a transverse oval mark over the antenne, the eye- 
incision (except narrowly on the inner side above), a broad line on the upper half of the 
outer orbits in the middle, the basal two joints of the antenne, a large, broad mark on the 
pronotum (rounded at the apex, where, on the outer side, it reaches close to the tegule ; 
on the inner side it is continued as a narrow line to the apex, leaving an elongated 
transverse triangular mark on the inner apical half, its base being at the tegulz), an 
oblique conical mark on the pleure below the tegule, postscutellum, the sides of 
metanotum broadly and the first abdominal segment, except the basal slope, a broad line 
down the centre of the basal two-thirds, and the legs, orange-red; the tegule of a paler 
orange, with a fuscous spot near the base. Underside of flagellum brownish red, this 
colour being more extended on the apical joints; the hook is of a paler orange, it is 
moderately stout and reaches to the base of the penultimate segment. Clypeus clearly 
longer than wide, the middle above transverse, with the sides rounded; there is a 
distinct apical incision, longer than wide, rounded above and of equal width. There is 
a stout keel between the antenne, which, on the inner side, are bordered by a curved 
one. Wings fuscous violaceous, darker in front, paler at the base. The basal slope 
of the first abdominal segment is shining, almost impunctate ; the puncturation is sparser 
on the top of the slope, at the junction with the stoutly punctured posterior part; the 
second segment becomes more strongly punctured towards the apex, which is distinctly 
curled up, it is longer than wide and is not narrowed towards the base or apex. The 
sides of the metanotum are bordered by a keel, commencing on the inner side near the 
outer edge of the postscutellum ; below the middle are two short, stout teeth; the space 
between them is curved. The apex of the postscutellum is smooth, shining, and 
transverse. 
10. Odynerus cenocephalus, sp. nov. 
Black, the upper half of the clypeus, the yellow at the sides extending lower down 
than in the centre, a mark, broader than long, with the sides rounded and broadly 
furrowed in the middle, a line on the base of the pronotum, narrowed in the middle, 
two oblique lines (sometimes absent) on the base of mesonotum in the middle, basal 
half of postscutellum, an irregular mark on the pleure below the tegule, a broad 
line, incised in the middle, on the apex of the first abdominal segment, at the sides 
dilated to the top of the apical slope, and slightly narrower bands on the apices of 
the following three segments, yellow. Legs black, except for a yellow line on the 
underside of the four anterior femora. Wings fuscous violaceous, the nervures and 
stigma black. @. 
Length 10-13 mm. 
