228 Timehri. 
down the dilated apex, bifurcated at the base, narrowed at the apex and the 
whole of the 2nd segment, black ; wings fuscous, paler at the apex, the costa, 
stigma and transverse basal nervure rufous, the other nervures black; the 
Ist and 3rd abscisse of the radius of equal length, the 1st almost straight, 
oblique, the 3rd broadly roundly, curved to the radius, the 2nd abscissa about 
one-fourth of their length ana not half the length of the space between the 
recurrent nervures, the 2nd transverse cubital has the basal two-thirds oblique- 
ly sloped towards the apex of the wing, the hinder part being almost straight, 
the 3rd cubital cellule as a consequence being much wider in front than behind ; 
the lst recurrent nervure is roundly curved in front. Clypeus twice longer 
than wide, the top rounded ; the apex witha shallow rounded incision. Thorax 
twice longer than wide, the base not quite transverse, the sides rounded. Apex 
of post-scutellum bluntly rounded. Metanotal furrow narrow at.the basal 
fourth, then becoming gradually widened. 1st abdominal petiole as long as 
the head and thorax united, the basal third narrowed, the dilated part with a 
shallow, not clearly defined furrow down the middle ; the 2nd segment longish, 
more than twice longer than it is wide at the apex, narrowed at the base, the 
middle tuberculate laterally. Female. Length 23mm. 
Thorax narrower in front than in the middle, the mesonotum rounded at 
the base, becoming gradually widened to the tegule, the apex transverse. 
Belongs to Saussure’s Division “‘ Zeta” (Syn. Amer. Wasps, 105) and comes 
near to Z. canaliculatus, Oliv. ot which it may form a local race. 
Eumenes demararaensis, sp.n. 
Black, the inner side of the eye incision, a narrow line on the upper part of 
the outer orbits, a longish conical spot, the narrowed end onthe inner side, on 
the base of propleurs, a narrow line round the edges of the pronotum, widencd 
at the base in the middle, a longish slightly curved spot, the narrowed end 
below and rounded, on the upper apical half of the propleure, the point behind 
the tegulx, a broad line, widened laterally and reaching to the middle, on the 
base of the scutellum, the post-scutellum, a square spot on either side of the 
base of metanotum, a longish triangular mark, the narrowed end above, on 
the sides below, commencing shortly above the middle and going slightly on to 
the pleure, a narrow line on the apex of the Ist abdominal segment, with a 
shorter one on the sides at its base, a wider one on the 2nd, its central (and 
larger part) narrower than the lateral, a wider line dilated in the middle, on the 
apex of the 2nd ventral and more obscure (perhaps discoloured) lines on the 
others, yellow. Antenne rufous black above, the scape more broadly black 
than the flagellum. Ocelli in a curve the hinder separate? from each other by a 
slightly greater distance than they are from the eyes. Clypeus widely pyriform 
longer than above, but not much, strongly, but not very closely punctured, 
the apex with a istinct, triangular incision, the sides forming triangular 
teeth. Thorax fully one fourth longer than wide, the base transverse, with 
the sides broadly rounded. 1st abdominal segment as long as the thorax ; from 
shortly beyond the middle it becomes gradually widened to the apex, the node 
forming an elongated triangle. 2nd segment slightly but distinctly longer than 
