-428 Annals of the South African Museum. 



" $ . Head wider than long, wider than in the type of rotundata, 

 more excavated behind, with a more distinct and smooth space for the 

 scapes. The tibise have only oblique hairs. Wings very large, at 

 least 10 mm. long (8 mm. in the type, in which the body is also large, 

 7 - 5 mm.). Of a very dark-brown colour, with the basal half of the 

 flagellum, the mandibles, tarsi and articulations reddish. Otherwise 

 like the type- species. 



" $ . The eyes are smaller and the head is narrower behind than in 

 the type. The scape is more slender and longer, twice as long as the 

 1st joint of the flagellum. Body 5 - 5 mm. long, the length of the 

 front wing 7 - 2 mm. In the type-species the body is 4"8-5 mm long, 

 and the front wing 6 mm. Head brownish, thorax yellowish-brown, 

 the rest of a dull, pale yellow. In rotundata the thorax and head are 

 somewhat reddish-yellow." 



Bulawayo. (E.M., G-.A. colls.) 



P. tenuinodis, Mayr. 

 Ann. K.K.N.H Mus. Wien, vol. 16, p. 12, %, £, 1901. 



1/ . 4>- 5 mm. Head and thorax dark yellowish-red, the anterior 

 margin of the clypeus, the epinotal spines and sides of epinotum below 

 dark brown, abdomen brown but paler at the base, mandibles 

 •castaneous red, legs and antennae reddish-yellow, or the whole body 

 dark reddish-brown with the legs and antennae a little paler. Body 

 with a fairly abundant, long and semi-ei'ect pilosity, much more 

 plentiful and longer than in punctulaia. Anterior three-fifths of the 

 head strongly and longitudinally striate, the spaces between the striae 

 r eticulate and fairly dull ; below the eyes the striae are stronger. 

 Posterior two-fifths of the head, and the cheeks, from the posterior 

 angles as far as the eyes, smooth and shining, with a few piligerous 

 punctures. Mandibles shining, sparsely and fairly coarsely punc- 

 tured. Median area of the clypeus with a few oblique stiiae at the 

 sides, and a strong longitudinal carina in the middle. Dorsum of 

 pro-mesonotum moderately shining and fairly smooth, but with a few 

 fine and superficial rugosities near the posterior lateral angles and on 

 the mesonotum. Epinotum and sides of thorax reticulate-punctate 

 and dull. Petiole very minutely reticulate and almost dull. Abdo- 

 men smooth and shining, microscopically rugulose at the extreme 

 base. 



Head much flatter than in punctulata ; excluding the mandibles a 

 trifle longer than wide, widest in the middle, hardly wider behind 



