CAMPOXOTUS. 3g] 



feebly carinate, the median lobe is very shortly produced, and its 

 anterior margin is notched in the middle ; the scape of the antennae 

 is quadrangular and the lateral occipital angles are not so pro- 

 lent. Ihe thorax is comparatively short and narrow, the legs 

 long and powerful, the metatarsi depressed and flattened. Node 

 the pedicel rather small, convex in front, flat posteriorly, its 

 upper margin notched in the middle ; abdomen massive. 



9 min. Similar, smaller, more slender ; mandibles with 5 teeth 

 scape of the antennas flattened towards apex; head narrower; 

 legs comparatively longer. 



$ . Similar to the $ maj. but larger; the thorax and abdomen 

 t opaque, but distantly punctured and shining; the mesonotum 



Fig. \l.Cam2)onotusmistura, $>. 



is flat above, and the metathorax abruptly truncate posteriorly ; 

 wings fulvo- hyaline, uervures yellow. 



Length, maj. 14-16 ; g min. 9-10; $ 15-17 mm. 



Hub. Tenasserim (Bingham) ; extending in the Malavan sub- 

 region to Borneo (Brit. J/us.). 



417. Camponotus siemsseni, Fvrcl, Jahrb. Hambwry. \\'UKH. Anstalt, 

 xviii (1001), p. 70, giuaj., $; Ann. Soc. Ent. fit-lye, xlvi (l'JO:>), 

 p. 287. 



$ maj. Eesembles somewhat in form the largest $ of C. coni- 

 pressus, but is more massive, with the head larger, but not quite so 

 large as in C. mistura, Smith. Black, the scape of the antennae at 

 base, the flagellum and the legs chestnut-red ; head, thorax and 

 abdomen smooth and shining, the head in certain lights very 

 minutely, the thorax more distinctly rugulose, the latter anteriorly 

 somewhat subopaque, the abdomen polished. Pilosity very sparse, 

 represented by only a few scattered pale hairs ; pubescence very 

 fine and sparse, only to be seen in certain lights, on the antennae 

 and legs it is a little more pronounced. Head very large, larger 

 proportionately than in C. comjn-fs*ut, broader posteriorly than 

 in front, the occiput widely emarginate; mandibles broad, the 



