Hymenopterenfauna von Paraguay. 295 
third linear, the apical two thirds very gradually widened, less than 
half as broad at the apex as the apex of the second segment, from 
which it is divided by a moderate constrietion. Sixth segment very 
long and sharply pointed at the apex. Stigma large, fully three 
times as long as broad, the radial cell long, closed at the apex, the 
second cubital cell longer than the third both on the radial and 
cubital nervures, especially on the latter, receiving the first recurrent 
nervure before one third from the base, the third cubital cell 
receiving the second recurrent nervure before the middle, the cubital 
nervure of the hind wing originating just before the transverse 
median nervure. Intermediate tibiae with two apical spines, the 
hind tibiae serrate, the hind femora slightly produced at the apex 
beneath, the anterior tibiae with the usual long spine beyond the 
middle. 
Black; the apical abdominal segment, except at the extreme 
base, testaceous. Wings hyaline, nervures black; the anterior wings 
crossed by two broad, pale, fuscous bands, the apical band from the 
radial cell, the basal one across the base of the first discoidal cell. 
Antennae missing. The intermediate coxae are almost, but not 
quite, contiguous. 
Length 10 mm. 
Hab. Per. 
Although the specimen is a female the general form more nearly 
approaches the slender form of the males of the other species of 
the genus. 
Tiphia pallidicornis n. sp. 
3. Clypeus sliehtly produced, broadly and very shallowly emargi- 
nate at the apex, finely and closely punctured and clothed with 
short grey pubescence Head shining, sparsely punctured, more 
sparsely on the vertex than on the front, the scape beneath opaque 
and very minutely punctured. Pronotum finely and rather sparsely 
punctured, the posterior margin very broadly smooth and shining, 
the anterior margin straight and slightly raised. Mesonotum and 
scutellum shining, sparsely punctured; propleurae smooth and shining; 
mesopleurae very shallowly punctured, margined anteriorly by a low 
carina; the sides of the median segment coarsely obliquely striated. 
Median segment scarcely longer in the middle than the scutellum, 
the posterior margin raised, broadly emarginate, subopaque, almost 
smooth on the sides, the middle finely punctured rugulose, with 
