356 roRMiciu.T:. 



Hah. A very variable species, spread in one form or other 

 throughout our limits, and extending through the ludo-Makiyan 

 region to New Gi-uinea. 



Var. hacchus, Smith, is reddish, with the head and abdomen 

 more or less fuscous. 



Var. fascithorax, Forel {loc. cit.)^ is very darlc brown, with the 

 coxcG and base of the femora yellow. 



Var. comottoi, Emery (Ann. IVfus. Civ. Gen. xxiv (1887), 

 p. 5] 3, ^ & 5 )i ^iid var. ditlcls, Emery {loc. cit. xxvii (1889), 

 p. 571, ^ ), are pale varieties found in Burma ; and lastly, var. 

 crass inod is, Eorel (loc. cit.), which is not uncommon in Burma and 

 Tenasserim, is of a very dark chestnut-brown colour, shining, with 

 longer and somewhat denser erect pilosity, and the node of the 

 pedicel thick and conical. 



407. Camponotus dichrous, Forel. 



Campouotu.s maculatus, F<ihr., race dichrous, Forel, Bull. Sac. 

 Vaud. Sc. Nat. xvi (1879), p. 65 ; id. Jour. Bomb. N. H. Soc. 

 Tii (189i>), p. 432. 



^ maj. Head and 3rd and following segments of the abdomen 

 pitch-black; tlagellumoE the antennae, thorax, legs and basal 

 two segments of the abdomen yellow, the latter with sometimes 

 broun markings ; the thorax anteriorly shaded with brown. 

 Head triangular, the lateral occipital angles very prominent ; 

 mandibles with 7 teeth ; clypeus carinate, with a median anteriorly 

 produced rectanguhu' lobe, as in C. com])ressus. Thorax an- 

 teriorly narrowed into a ■collar ; legs long and rather slight, tibia? 

 compressed and feebly longitudinally carinate. Xode of the 

 pedicel not so thick as in C. compressus : abdomen oval, not broader 

 than the head. 



^ miii. Similar, much smaller and more slender, the head 

 narrower posteriorly than in front, the occiput compressed. 



Lcnr/th, ^ maj. 9-11 ; g min. 5-6*5 mm. 



Hab. The Himalayas to 0000 ft. (Wood-Mason, Sage cj- Moller). 



Forel has described a lighter-colonred and slightly larger variety 

 as vai\ Ji-attensis The species resembles C. varier/atus, Smith, but 

 is structurally different. 



408. Camponotus thraso, Forel. 



Camponotus niaculatus, race thraso. Forel. Jour. Bond). N. H. Soc. 

 vii (1893j, p. 432, ^. 



^ maj. Very dark castaneous, almost black, very minutely re- 

 ticulate-punctate, shining; pubescence almost absent (or abraded), 

 reduced to very sciinty scattered erect hairs. Head rectangular, 

 as broad posteriorly as in front ; clypeus carinate, with a very 

 short lobe, its antei'ior margin transverse: mandibles moderately 

 broad, the teeth abraded or obsolete ; antennal carinas short, 

 moderately close together, divergent posteriorly. Thorax some- 

 what depressed in front, strongly compressed posteriorly ; pro- 



