176 FOBMICIDjE. 



b. First joint of pedicel without any appendix 



beneath, 

 a'. Clypeus not carinate or toothed. 



a 2 . First node of pedicel distinctly longer 



than broad. 



a 3 . Head and thorax blackish brown ; 

 metanotal spines very short, 

 barely a quarter of the length 

 of the space between their bases . T. christiei, p. 178. 

 b 3 . Head and thorax more or less 

 rusty red ; metanotal spines 

 longer, as long as, or longer than 

 the space between their bases. 

 a*. Metanotal and metasternal 



spines subequal T. coonoorense, p. 178. 



5 4 . Metanotal spines distinctly 



longer than metasternal spines. 



a 5 . Metanotal spines very long, 



more than half length of 



thorax and strongly bent 



inwards T. curvisjrinosum, p. 179. 



b'\ Metanotal spines shorter, diver- 

 gent, not bent inwards T. curtulum, p. 180. 



b' 2 First node of pedicel as broad as, or 

 broader than long. 



a 3 . No metasternal spines T. salvatum, p. 180. 



b 3 . Metasternal spines or teeth present. 



a 4 . Metanotal spines reduced to 



2 short upturned points or 



teeth T. nursei, p. 181. 



6*. Metanotal spines longer. 



a 5 . Head coarsely striate, opaque. T. mixtum, p. 182. 

 4*. Head shining, finely striate ; 



striae wide apart T. fergusoni, p. 182. 



b'. Clypeus either carinate or toothed. 



a 2 . Clypeus with two short obtuse teeth. T. transversarium,^.lS3. 

 b' 2 . Clypeus not toothed. 



a 3 . No antennal furrow T. inglebyi, p. 183. 



b 3 . Antennal furrow distinct. 



a 4 . First node of pedicel distinctly 



longer than broad. 

 a 3 . Thorax above only slightly 

 convex, laterally margined ; 

 the sides compressed and 



vertical T. yuineense, p. 184. 



b 5 . Thorax rounded and convex 

 above, not margined ; the 

 sides not compressed or 



vertical T. scabmm, p. 185. 



6 4 . First node of pedicel as broad as, 



or a little broader than long . . T. simillimum, p. 185. 

 B. Antennae 11-jointed. 



a. First node of pedicel longer than broad. 

 '. Spines very long, as long as, or longer 



than half length of thorax. 

 a 3 . Meso- and metanotum obtusely mar- 

 gined T. pilosum, p. 186, 



