A NEW MASON WASP. 155 
A NEW MASON WASP. 
Odynerus wickwari, n. sp. 
By Grorrrey Mreape-Wa po, B.A. 
Description of Female. 
|e eae : broadly at base and narrowly along the sides of 
clypeus, scape of antenne beneath, narrow line running from 
between base of antenne to the most anterior of the ocelli, sinus of 
the eyes, the inner orbits bordered with a line which branches off 
towards the ocelli above, the cheeks entirely, anterior margin of 
pronotum broadening laterally ; two spots, the upper ovate, the 
lower elongate ovate, on mesopleure, base of tegule, a line on 
anterior margin of scutellum broader laterally, a narrow line inter- 
rupted medially on the post-scutellum, two triangular marks on 
medium segment yellow. Abdomen, apical margin of first abdomi- 
nal segment above, second abdominal segment, both dorsally and 
ventrally, much enlarged on ventral surface, two small spots about 
the middle of first abdominal segment, four spots at even distances 
apart placed transversely on segment 2, a series of three spots on 
segments 3, 4, and 5, and the apical margin on ventral surface of 
segments 3 and 4, yellow. Anterior and intermediate legs, except 
the tarsi, posterior legs, with exception of femora, yellow. Apex 
of mandibles, entire median segment (except where yellow), first 
abdominal segment at base above and wholly on ventral surface, 
red. Posterior femora red above, the tarsi ferruginous-red. Wings 
hyaline, fuscous along the costa and in radial cell. Clypeus about 
as broad as long, truncate, and narrowed towards apex. Pronotum 
broad in front, median segment slightly depressed rounded at the 
apex ; first abdominal segment not petiolate, rather narrower than 
the second. Head and thorax coarsely and evenly punctured, 
abdomen shining impunctate, clypeus and abdomen clothed with 
a Sparse gray pile. 
Length, 7} mm. 
Description of Male. 
The male differs from female in several points in colouration. 
Clypeus yellow and slightly emarginate. Horseshoe mark on disc 
of mesonotum yellow. The following yellow markings present in 
