CAMPONOTUS. 



349 



bK Abdomen more or less opaque, 

 without auy line sericeous 

 pubescence. 

 «'. Hind tibiiv spiuose beneath . . C. dolendus, p. o64. 

 hK Hind tibiaj without spines be- 

 neath C. crassisfpiamis, p. 068. 



//. Head, thorax and abdomen entirely 



pale yellow C. invidits, p. 367. 



c'. Head, thorax and abdomen never all 

 black or all yellow. 

 a'^. Scape of auteini;e tia,t. 



«'. Basal joint of tarsi broad and 



flat C. niistura, p. 360. 



L'. Basal joint of tarsi narrow, 



slightly depressed C.fornavonix, p. 360. 



b'-. Scape of antenme cylindrical. 



a^. Abdomen with dense silky 

 pubescence. 

 a'. Clypeus with a distinct medial 



lobe produced anteriorly .... ('. riifo(]laucus, p. 363. 

 bK Clypeus Avithout a medial lobe, 



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

 b^. Abdomen without, or with only 

 very thin, sparse recumbent 

 pubescence. 

 a^. Tibia3 cylindrical. 

 «\ Tibife covered with long 



erect hairs . = C. buddlue, p. 359. 



6\ Tibiae covered with verv 



widely spaced, adpressed 



hairs. 



d\ With a few spines on. 



apical third of tibiae 



beneath C. oblo7i(jus, p. 358. 



b\ Without spines on tibiae. 

 a'. Medial lobe of clypeus 

 with its anterior margin 



rounded C. ivrowjhioni, p. 372. 



b'. Medial lobe of clypeus 

 Avith its anterior margin 

 transverse. 

 a". ^ maj. under 8, ^ min. 



under 6 mm C taylori. p. 353. 



6^. ^ maj. over 8, ^ onin. 

 over 6 mm. 

 (i'. ^ 7naj. with 7, ^ 



viin. with G teeth . C. i/ifuscus, p. 354. 

 b'-'. ^ mr/J. with 6, ^ 



7nin. with 5 teeth . C. varief/atiis, p. 350. 

 bK Tibiae compressed. 



(i\ Tibiae spined beneath. 



a". Head, thorax and abdomen 

 castaneous red. 

 a', 9 mq/. over 15, ^ vihi. 



over 10 mm C.festinns, p. 302. 



bK ^ «/«/. not over tS, ^inin. 



5-6 mm C. arro(/ans, p. 357. 



