CAMERON, VESPIDAE. 195 



This species should he ko\\n hy the black, densely haired head and thorax, pelio- 

 lated abdomen and strongly slrialed 2nd ventral abdominal segment. 



TjlllJ/etllUS gen. nov. 



Abdominal petiole long, slender, cylindrical, longer than the rest of the abdomen 

 and still longer than the head and thorax united; the 2nd segment with the basal half 

 narrower than the 1st, cylindrical; the apical widened, triangular. Clypeus roundly convex, 

 wider than long, the apex raised, clearly separated behind. Mandibles rather short, broad, 

 (he apex distinctly bidenlate, the teelh clearly separated. Head cubital, rounded in front, 

 the temples wide. Thorax more than twice longer than wide, broadly rounded in front, 

 narrowly behind. Legs slender. Antenn.T slout, placed on the middle of the face. Base 

 of pronoluin clearly margined. 



The type of this genus looks like a Zetlius of the Didymogastra section. It dif- 

 fers from the old world species in the 2nd abdominal segment having its basal half 

 narrowed into a long Ihin, round petiole. From the American it is easily enough di- 

 stinguished by the very long, thin, cylindrical petiole of uniform thickness except for 

 being slightly narrowed at the base, by the shorter and broader mandibles, which have 

 the leeth more clearly defined, broader, more distinctly separated, and by the 2nd and 

 3rd transverse cubital nervures being united in front, almost appendiculated, and by the 

 apex of the clypeus above having a broad rounded border and a depression below. II 

 is obvious that the genus is closely related to the African Paramisphocyttarus MAGRETTI; 

 that genus should be known from it by the mandibles being tridentulate and by the scu- 

 tellums having a longitudinal furrow clown the middle; judging, too, from MAGRETTI'S figure, 

 the metathorax in his genus is distinctly excised laterally, while in mine it forms a 

 gradual rounded curve from the base to the apex, without any incision or depression; 

 also, judging from the figure, the temples are obsolete, while in Tani/zctkus they are well 

 developed. Finally Mischocyttarus belongs to the Social Vespidae, not to the Eiimcuklae. 



Taiiyzetlms iifricanns sp. nov. 



Black, the clypeus except round the top and sides, the mandibles except the apex, 

 a small spot behind the top of the eyes on (he outer side, and the teguhe, red, the 

 legs of a paler red, the hind coxie and femora black above, their tibia? and tarsi entirely 

 blackish; a narrow interupted line on the apex of the 1st abdominal segment and the 

 apex of the 2nd and 3rd narrowly, pale yellow. Wings hyaline, the nervures and stigma 

 black; the fore wings narrowly, indistinctly smoky in front; the 2nd and 3rd transverse 

 cubital nervures unite in front. Abdominal petiole slender, curved and narrowed at 

 the base, twice the length of the thorax; the basal half of the 2nd segment narrower 

 than it, cylindrical, the dilated apical part triangular; there is a small spot on the outer 

 edge of the 3rd ventral segment, a line on the 4th and a small spot in the centre of 

 the filli. $. - Total length 11 mm. - - Kilimandjaro: Obstgartenstensteppe, 24th March. 



Head and thorax closely and strongly punctured; the upper parts sparsely, the 

 pleura and metanotum densely covered with silvery pubescence. Clypeus broadly, roundly 



