CAMPONOTUS. 349 



b 3 . Abdomen more or less opaque, 

 without any tine sericeous 

 pubescence. 



a 4 . Hind tibiae spinose beneath . . C. dolendus, p. 364. 

 6*. Hind tibiae without spines be- 

 neath C. crassisyiiamis, p. 368. 



b' . Head, thorax and abdomen entirely 



pale yellow C. invidus. p. 367. 



c. Head, thorax and abdomen never all 



black or all yellow. 

 2 . Scape of antennse flat. 



a 3 . Basal joint of tarsi broad and 



flat C. mistura, p. 360. 



b 3 . Basal joint of tarsi narrow, 



slightly depressed C.fornaronis, p. 360. 



b-. Scape of antennae cylindrical. 



a 3 . Abdomen with dense silky 



pubescence. 

 a 4 . Clypeus with a distinct medial 



lobe produced anteriorly .... C. rufoglaucus, p. 363. 

 /A Clypeus without a medial lobe, 



its anterior margin transverse. C. menda.r, p. 370. 

 b 3 . Abdomen without, or with only 

 very thin, sparse recumbent 

 pubescence. 

 l . Tibiee cylindrical. 

 a 5 . Tibiae covered with long 



erect hairs C'. buddha?, p. 359. 



6'. Tibiae covered with very 

 widely spaced, adpressed 

 hairs. 



a 6 . With a few spines on 

 apical third of tibise 



beneath C. oblonyus, p. 358. 



b 6 . Without spines on tibiae. 

 a~. Medial lobe of clypeus 

 with its anterior margin 



rounded C. wrouyhloni, p. 3/ 2. 



b~. Medial lobe of clypeus 

 with its anterior margin 

 transverse. 

 a s . $ maj. under 8, $ min. 



under 6 mm C. fay/on, p. ioi. 



6 s . ^ maj. over 8, $ min. 



over 6 mm. 

 a 9 . maj. with 7, $ 



min. with 6 teeth . C. infuscus, p. 354. 

 b". $ maj. with 6, $ 



min. with 5 teeth . C. vaneffatm, p. 359. 

 />*. Tibiae compressed. 

 a''. Tibise spined beneath. 



a 8 . Head, thorax and abdomen 



castaneous red. 

 a'. mm. over 15, $ min. 



over 10 mm C.festmus, p. 36l>. 



b~. $ maj. not over S, gflMM. 



5-6 mm C. airoyans, p. 35/ . 



