The Termites of South Africa 73 



M. swaziae. From the fontanelle two deep grooves diverge for- 

 ward narrowly to the superior articulations of the mandibles and 

 subtend an entire and elongate triangular ridge the attenuate apex 

 of which extends to the fontanelle and the base of which rests 

 actually upon the front margin of the clypeus. In exhibiting a 

 carina reaching from the fontanelle and passing uninterruptedly 

 over the clypeus, in the comparative narrowness of this, the 

 sharpness of its outline, and the depth of the subtending grooves, 

 the sculpture of the frontal area of hellicosus stands apart from 

 that of the major soldiers of other species. 



I propose to recognise three South African forms of hellicosus; 

 all the imagos differ among themselves in minor characters but, 

 for the present, they may be recognised by the wing-spans thereof. 



(1) Form mossambica (= var. rnossambica Hagen). 

 This form is represented by the following material: 



a. Soldiers and workers, Tete. 



b. Winged imagos, Zambeti. 



c. Many nest series including kings and queens, 



Buzi River. 



d. Winged imagos, soldiers, and workers ex nests, 

 Xinavane, Komati River, P.E.A. 



e. Soldiers and workers, Komati and Umbeluzl 



Rivers, Swaziland. This is essentially the east 

 coast form of hellicosus. 

 Wing span : 67 to 71 mm. Forewings : 31 to 33 mm. 



(2) Form Iwipopocnsis f.nov. This is the northern 

 Transvaal form and was obtained near Messina. It 

 agrees generally with mossambica except that the 

 infertile castes are larger and the sculpturing of the 

 the imago head is slightly different. 



Wing span: 71 to 72 mm. Forewings: 81 to 34. 

 (2) Form kunenensis f.nov. This is the Ovamboland 

 form. The soldiers of the same type as Umpopoensitr 

 the imagos with larger wings. 



Wing span : 79 to 80 mm. Forewings : 36 • 5 to 

 37 mm. 



Macrotermes natalemis (Hav.) s.lat. 



= TcTTues hellicosus, in part, Hagen 1858, 1860. 



■^ Ternes nalalensis Hav. 1898. 



=- Termes natalensis Hav. (Sjostedt 1900). 



-= Termes natalensis Haw. (Fuller 1915, 1919, 1920). 



? = Termes parvus Holmg. 1913. 



