142 bulletin: museum of comparative zoology. 



Mandibles shining, very coarsely and sparsely punctate, with a few coarse 

 rugae near the base. Remainder of body subopaque, densely punctate; head, 

 thorax, and petiole also covered with sparse but rather regular foveolae, which 

 are more pronounced on the posterior portion of the head, sides of thorax, 

 and on the petiole. Epinotal declivity rather shining, very minutely punctate. 

 Postpetiole and first gastric segment longitudinally but much less sharply 

 costate than in rufipes, the spaces between the costae with shallow foveae 

 having sharper anterior margins. These foveae become much more distinct 

 on the sides of the segments. Legs with sparse piligerous punctures. 



Hairs and pubescence golden, abundant and rather long, the pubescence 

 appressed on the head, gaster, and appendages, more oblique on the thoracic 

 dorsum, nearly absent on the pleurae. Hairs longest on the abdomen, espe- 

 cially on the apical segments. 



Dark brown; mandibles blackish; legs, including the coxae, posterior 

 borders of gastric segments, wing-insertions, epinotum and petiole reddish. 

 Wings rather heavily infuscated, with blackish stigma and brown veins. 



A single specimen. I describe this large ant with some reluctance. 

 It is certainly not a form of rufipes or of insularis, judging from 

 Emery's very brief description of the worker of the latter species. 

 Professor Baker sent me from Singapore a female specimen which 

 evidently represents a variety of insulcn-is, and I possess a worker 

 from Ceylon labeled " insnlaris" by Forel. Though these specimens 

 have the mandibles much like those of sandakana in being shining, 

 convex, and without the fine, longitudinal striae of rvfipes, the petiole 

 has a sharp denticulate postero-superior border. According to Emery, 

 the petiole is also costate in the typical insularis and this is the case 

 in my Ceylonese specimen. 



5. Bothroponera tridentata (Smith) ^ cf (Ante, p. 55). 



Male. Length nearly 10 mm. 



Head through the very large, convex, and reniform eyes broader than long, 

 flat above, with evenly rounded posterior border and very short cheeks, the 

 eyes occupying nearly the whole of the sides of the head. Ocelli large and 

 prominent. Mandibles small, flat, edentate. Palpi very long, the labial pair 

 3-, the maxillary pair 5-jointed, the three terminal joints of the latter long and 

 attenuated. Clypeus feeblj^ convex, ecarinate, with straight, entire anterior 

 border. Antennae very long and slender, filiform; scape short, only twice as 

 long as broad, the first funicular joint as broad as long, the remaining joints 

 cyhndrical, gradually diminishing in length towards the tip. Thorax somewhat 

 broader through the wing-insertions than the head. Pronotum transverse, 

 truncated in front; mesonotum as long as broad, feebly convex above, without 



