wheeler: the ants of Borneo. 113 



Slender; head nearly IJ times as long as broad, with the sides in front of 

 the moderately large and convex eyes, which are just anterior to the posterior 

 third of the head, rather straight and parallel, behind the eyes gradually 

 contracted to a narrow, marginate, but not colliform posterior border; in 

 profile very convex above and flat below. Mandibles narrow, feebly convex, 

 with straight external borders, their apical borders apparently 6- toothed. 

 Both the maxillary and labial palpi very long. Clypeus subcarinate behind, 

 its median portion trapezoidal, a little broader than long, its lateral portions 

 very narrow and reaching to the anterior corners of the head, its anterior 

 border straight and entire. Clypeal foveae small and deep. Frontal area 

 large, semicircular, rather indistinct. Frontal carinae sigmoidal, at their 

 greatest curvature fully as far apart as their distance from the lateral borders 

 of the head. Antennae long and slender, inserted well behind the clypeal 

 border, the nearly straight scapes extending about half their length beyond 

 the occipital border of the head. Thorax shaped like that of Hypoclinea, 

 broadest through the pronotum which, including the neck, is as long as broad, 

 evenly rounded and convex above ; mesonotum broadly and deeply constricted 

 behind, the anterior dorsal outline in profile falling rather steeply with an even 

 curve from the pronotum to the depression in which lie the two very prominent 

 metathoracic stigmata. Epinotum about as broad as the mesonotum, only a 

 little lower than the pronotum, with subequal base and declivity, the former 

 longitudinally and transversely rounded, rising rather steeply in front and 

 meeting the latter at a right angle which is neither sharp nor marginate. 

 Petiole narrow, as long as high, the node at its anterior end, erect and very 

 blunt and rounded, lower than the epinotum. Gaster elliptical. Legs long 

 and slender, distinctly compressed, tibiae without bristles on their flexor 

 surfaces. 



Shining; mandibles subopaque, very finely and sparsely punctate; gaster 

 transversely alutaceous, with sparse, piligerous punctures. 



Hairs long, erect, rather abundant, in part very long and flexuous on the 

 dorsal surface of the head, thorax, and petiole, whitish, with brown bases in 

 some lights, shorter on the front and sides of the head; long, abundant, and 

 oblique on the scapes and legs. Pubescence yellowish, confined to the an- 

 tennal funiculi. 



Brown; fore tibiae and bases of middle and hind tibiae paler; neck, mandi- 

 bles, except the teeth, cheeks, anterior border of clypeus, antennal funiculus 

 except the basal half of the first joint, whitish yellow; posterior portion of 

 clypeus and antennal insertions somewhat darker; palpi dark brown, with 

 pale articulations. 



Described from a single specimen taken on Mt. Matang, W. Sara- 

 wak by Prof. Harrison W. Smith. 



This species is related to C. dolichoderoides Forel but is smaller, 

 shining and with very different pilosity and very differently shaped 



