wheeler: the ants of Borneo. 141 



Gaster very long and narrow, broadest in the middle, the basal half formed 

 by the first segment. Genital appendages sm^l and retracted. Legs rather 

 long and slender. 



Shining; mandibles very sparsely, coarsely, and irregularly punctate. 

 Clypeus feebly striolate. Head finely and rather regularly longitudinally 

 rugose on the front, irregularly punctate-rugulose behind. Thorax coarsely 

 and transversely foveolate along the sutures and Mayrian farrows and coarsely 

 and sparsely foveolate on the surfaces of the sclerites. Pronotum longitudi- 

 nally rugose. Base of epinotum coarsely and vermiculately rugose, the 

 declivity finely and densely punctate-rugulose. Petiole above with a few 

 strong, undulating longitudinal rugae, becoming more reticulate on the sides. 

 Postpetiole, gaster, and legs smooth, Avith minute, sparse, piligerous punctures. 



Hairs as in the worker, and most abundant on the apical portion of the gaster. 



Black; mandibles, genitalia, and tips of tarsi reddish. Wings grayish 

 hyaline, with large black pterostigma and dark brown veins. 



Described from a single specimen, which must, I believe, represent 

 the hitherto unknown male of C. antcnnatus though the sculpture of 

 the head, thorax, and petiole is very different from that of the worker. 



*2. Myopopone castanea Smith 9 • 

 3. Platythyrea pusilla Emery 9 {Ante, p. 50). 

 *4. Bothroponera sandakana, sp. nov. 



Female. Length about 14 mm.; wings 11 mm. 



Allied to rufipes Jerdon and insularis Emery. Head, excluding the mandi- 

 bles, broader than long and considerably broader behind than in front, with 

 broadly excavated posterior border and nearly straight sides. Posterior 

 orbits of the moderately large and convex eyes at the median transverse 

 diameter of the head. Mandibles large and rather convex above, not flattened 

 as in rufipes, their apical bowlers finely and rather evenly serrate. Clypeus 

 short, strongly carinate, truncated anteriorly in the middle; the anterior border 

 entire, straight, and transverse. Antennae short and stout, scapes reaching 

 nearly to the middle of the occipital bsrder, all the funicular joints, except the 

 first and last, distinctly broader than long. Thorax through the wing-inser- 

 tions a little narrower than the head. Epinotum sharply angular in profile, 

 the base feebly convex and distinctly shorter than the concave, sloping de- 

 clivity, which has a marked, crenulate border, both above and on the sides. 

 Petiole higher than thick, as thick above as below, truncated in front and be- 

 hind, convex above and on the sides, the posterior surface slightly concave 

 but with its superior border merely sub marginate and not denticulate. Gaster 

 and legs of the usual form. 



