The Termites of South Africa 81 



Soldier Minor: Relatively small and with j-ellower head than 

 major, also with proportionately longer, straighter and finer 

 mandibles. Frontal area not decidedly depressed; fontanelle 

 distinct ; paired raised spots laterad and anterior of fontanelle 

 as in major ; without a median elevation, such as is present being 

 confined to ^he clypeus. Antennae XVII. jointed ; joint III. about 

 as long as IV. or faintly shorter. 



Total length S : head with mandibles 3 • 9 ; headwidth 1 • 9 to 

 2 • ; left mandible 1 • 6. 



Workers : Only one worker caste is represented in the series. 

 Head yellowish brown ; body sordid ; legs yellow ; antennae dis- 

 tinctly pale at base and then becoming dark brown. Antenna? 

 XVII. jointed; III. a little longer than IV. and somewhat 

 cylindrical ; V. plainly narrower than IV. or VI. 



Total length 6 to 7 ; headwidth 2 • 1. 



Locality: Ukuzi River, ZuLULAND. 



Remarks: The major soldier most resembles that of M. 

 bellicosus-mossamhica especially in the head outline, colour and 

 mandibles. The sculpturing of the frontal area is, however, 

 quite different and the hind margin of the mesonotum flatly 

 incurvate. Inasmuch as it bears a resemblance to the major 

 soldier of bellicosus-mossamhica, so is it strikingly different from 

 that of naialensis. . In the size of both soldiers and workers ukuzii 

 agrees with parvus but taking Holmgren's definition of the latter 

 as sound it is impossible to confuse the two. 



MACROTERMES : ANALYSIS OF SPECIES. 



l.~WINGED IMAOOS. 



(Antennae XIX joints; III longer than IV). 

 A. Largest kinds : Width of third abdominal sternites 7 to 7 • 5 

 mm. Headwidth 3 • 9 to 4-3 mm. 



B. Abdominal sternites each with two distinct pale yellow 

 spots. Clypeus yellow, paler than head; ocelli some- 

 what upturned waterhergi (Fuller) 



BB. Abdominal sternites without distinct pale spots, Cly- 

 peus dark, as dark as head ; ocelli not upturned. 



C. Head and thorax highly polished, corners of pronotum 

 plainly hollowed usutu sp.n. 



CC. Head and thorax dull, corners of pronotum not deeply 



hollowed swaziae (Fuller) 



AA. Large kinds: Width of third abdominal sternite 6 mm. 

 Headwidth 3-4 to 3-7. 



B. Front margin of pronotum broadly emarginate. Eyes 



and ocelli plainly roundly convex, lelUcosus (Sm) s.lat. 



BB. Front margin of pronotum relatively straight. Eyes 



and ocelli flatly convex .... natalensis (Hav) s.lat. 



