wheeler: the ants of borneo. 115 



Black; thorax and petiole dark brown; upper surface of epinotum and some 

 spots on the pleurae ferruginous; coxae and femora brownish yellow; tibiae, 

 tarsi, and funiculi dark brown; terminal tarsal joints, claws, and empodia 

 reddish. 



Worker minor. Length nearly 5 mm. 



Very similar to the major worker, except that the head is much smaller, 

 proportionally longer, with straight posterior border, more prominent eyes 

 and the antenna] scapes extending about -g- their length beyond the occipital 

 border. The epinotal declivity is slightly concave and a little more sloping, 

 the petiolar node is decidedly thinner. The thorax and legs are dark brown, 

 except the articulations of the latter and the tarsi beyond the basal joint, 

 which are reddish. The erect hairs on the legs are somewhat less numerous. 



Described from two major and two minor workers taken by Mr. 

 William Beebe on the Mujong River, Sarawak, "running on bushes." 



Like the preceding, this is a very peculiar species, which I have 

 placed in Forel's subgenus Myrmosphincta on account of its thoracic 

 structure. In my opinion this subgenus is an unnatural assemblage 

 of forms, but in the present stage of myrmecology it is useful as a 

 catch-all for the species Avith markedly sellate thorax. The tarsi and 

 claws of C. mcgalonyx show that it is a true arboreal ant. It exhibits 

 certain peculiarities in the structure of the clypeus and thorax that 

 recall the conditions in Colobopsis. 



174. Camponotus (Colobopsis) pilosus (Smith). 



Forrnica pilosa Smith, Journ. Proc. Linn. soc. London. ZooL, 1857, 2, p. ,54, ^ . 

 Colobopsis ptibescens Mayr, Verh. Zool. bot. gesellsch. Wien, 1862, 12, p. 691, 



S 9 («ec Fabricius). 

 Camponotus pubescens Emery, Ann. Mus. civ. Genova, 1889, ser. 2, 7, p. 517. 

 Camponohis (Colobopsis) leonardi Emery, ibid., p. 515, 9 . 

 Camponotus {Colobopsis) pilosus Forel, Rev. Suisse zool., 1914, 22, p. 272. 



Type-locality: Sarawak, Borneo (A. R. Wallace). 

 Kapouas Basin (Chaper). 



Soldiers, workers, and females from British North Borneo (E. B. 

 Kershaw), Kuching and Rambungan River (H. W. Smith). 



175. Camponotus (Colobopsis) badius (Smith). 



Formica badia Smith, Journ. Proc. Linn. soc. London. Zool., 1857, 2, p. 54, U . 

 Camponotus badius Mayr, Verh. Zool. bot. gesellsch. Wien, 1886, 36, p. 354. 

 Camponotus (Colobopsis) badius Forel, Rev. Suisse zool., 1914, 22, p. 272. 



