458 Annals of the South African Miiseum. 



14. Aerenurus capensis (? , n. sp. 

 Plate XX., figs. 35-39. 



Length of body (including the tail and petiolus) 1-35 mm. 



Width ,, 0-80 mm. 



Height ,, 0'75 mm. 



Length of petiolus (seen from above) 0'14 mm. 



This species belongs to the A. emarginator group (subgen. 

 Petiolurus K. Thon, 1900) (33). 



The colour is probably green. 



The shape of the body, seen from above, resembles that of the 

 3' of A. maculator (Miiller), Koenike ; it is longish, emarginated at 

 the front and at the anterior outer margins on the outer sides of the 

 eyes, but the upper side has not the large dorsal humps. The 

 humps have contours conforming more to those of the <? of 

 A. emarginator (Mtiller), Neuman (11) but are smaller. The hind 

 lateral angles are very small and project but little laterally and 

 backwards (fig. 36), the hind ends reach scarcely further backwards 

 than the sinuous posterior margin, where the usual hairs, the 

 petiolus, and the hyaline membrane are found. The inner curved 

 hairs reach over the hind end of the petiolus, which, seen from 

 above, tapers backwards and is longish, rounded, and without 

 angles. Near the hind end an upright process apparently stood 

 (fig. 37), but this probably was an artificial product and not 

 chitinised, for I removed it without injuring the petiolus. Seen 

 from the side (figs. 35 and 37) the petiolus appears obliquely trun- 

 cated. The hyaline membrane is narrow^ with sharp hind angles. 

 Near the posterior margin of the tail are 2 small hair-bearing 

 protuberances, and between these a small process (fig. 36). The 

 dorsal humps are also very small, both the pair behind the eyes and 

 the pair over the commencement of the tail inside of the dorsal line 

 {incisura dorsalis) ; the humps are very remote from one another 

 and smaller than in the allied species. Seen from the side, these 

 humps appear rounded, without peaks (fig. 35). The anterior pro- 

 tuberances, external to the anterior end of the dorsal line, are also 

 rounded and are scarcely visible from the side. The dorsal line 

 may be compared to half a shoe-sole ; it is bent outwards at the 

 hind angles. 



The under side shows no very remarkable characteristics in regard 

 to the epimera, which are partly incrusted in the only specimen. 

 The first epimera have long, pointed, anterior prolongations. The 

 maxillary sinus is small and contains a little maxillary plate. I have 

 not dissected the mandibles. 



