A Monograph of the Formiciclae of South Africa. 459 



head. But the 2nd node is much narrower, only one and a-half 

 times wider than long, having at the sides only two fairly short cones, 

 whereas in the type of Schultzei it is twice as wide as long, and has 

 spines at the sides, although these are shorter than in spinulosaT 



$ . 2*4-2'6 mm. Almost identical with the type, slightly darker, 

 with the mesonotal impression a little more accentuated. 



This species is closely related to spinulosa, but differs from it in the 

 1/ as follows : The head is parallel-sided, not wider behind than in 

 front, if anything a little wider in front than behind. The occipito- 

 frontal sulcus is much deeper. The sculpture extends further back, 

 reaching the middle of the head above, and well beyond the middle at 

 the sides. The occipital emargination is deeper and more angular at 

 the apex. The thorax is narrower ; the posterior lateral angles of the 

 pronotum are more prominent, since there is a fairly pronounced 

 constriction of the sides between them and the mesonotum. The 

 transverse torus on the mesonotum is thicker. The dorsum of the 



1 

 Fig. 28. — P. Schultzei, Forel, var. gwaaiensis, Forel. 



epinotum is longer and the teeth are closer together. The dorsal face 

 of the first node is parallel-sided, not angular in the middle. 



The ^ 5 °£ the two species are veiy much alike, but in gwaaiensis 

 the scapes are more slender and longer, extending back as far as the 

 middle of the pronotum, whereas in spinulosa they do not project 

 beyond the occipital margin by more than one and a-half times the 

 length of the eye. In addition, in gwaaiensis the frontal carinae are 

 slightly arcuate and divergent, the head is narrower and convex 

 behind, not straight or slightly eunu'ginate as in spinulosa. The 

 transverse impression of the mesonotum is also shallower, the first 

 node of the petiole less high, the second node longer and distinctly 

 longer than wide. 



$. 7 - 2 mm. (hithei-to undescribed). Head longitudinally striate, 

 the spaces between the striae closely and finely reticulate. A few 

 strong rugae radiate outwards from the ocelli. There is a deep and 

 shining occipital groove which reaches as far as the anterior ocellus. 

 Posterior two-fifths of the mesonotum obliquely and sharply rugulose, 

 the rest of the mesonotum and the scutellum shining and very 



