36 Claude Fuller 



(b) By comparing camera lucida drawings of the mandibles 

 of the soldiers of this sub-genus, one is able to detect differences 

 in the prominence and orientation of the third tooth of the left 

 mandible as between soldiers of the same series and as between 

 species. Thus the third tooth is more prominent in some soldiers 

 of the Malmesbury series than in others. As between species, so 

 far as my exami.iation goes this tooth is least produced and blunter 

 in viator (e.g. aurmllii) than in others, especially H. peringuey^i 

 and H. thomseni. 



(c) The difference cited for the anterior lobes and angles 

 of the pronotum furnishes my principal reason for thinking the 

 insect in the Schoenherr collection was wrongly determined as 

 viator by Hagen, 



(d) The h.ind margin of the pronotum of all soldiers of 

 Hodotermes s. lat. is incurved in the middle. There are diffe- 

 rences in the degree of incurvature, but with the exception of one 

 abnormal specimen, I have seen no soldier of which the hind mar- 

 gin of the pronotum could be described as " kreisformig ". This 

 abnormal specimen is one of the Malmesbury series! 



(e) The only dimension of any value in comparing the varia- 

 tion of size of workers of Hodotermes s. lat. is the headwidth. 

 On this Sjostedt's statement that the workers of viator stand 

 *' between *' the larger and smaller of aurivillii collapses. 



Latrielle*s description (1805) is quite brief and may be quoted 



in full: 



Termes VOYAGEURS — Termes viator.^ 



Je n'en connais que la larve qui est d'un brun clair, avec la 

 tete grosse, brune; les yeux noirs, a facettes tres distinctes» 

 places sur les cotes, a peu de distance des mandibles; deux 

 points jaunatres a la place des petits yeux Hsse. Du Cap. d. 

 Bon. Esp. 

 Burmeister (1839) described certain imagos from South Africa 



(vorbirge du G. Hoff.) as those of viator. How much guesswork 



there was about this determination cannot now be told, but it 



♦It is evident from the title here bestowed that Latrielle was 

 to some extent acquainted with the characteristic habit of this 

 species ; that of moving freely over the surface of the ground. 



