320 bulletin: museum of comparative zoology. 



at base, stout and acuminate, curving upward and backward with the tips 

 inward. Petiolar node a httle longer than broad; broadest in front, margined 

 at sides and in front; anterior corners rounded; posterior corners angulate. 

 Postpetiole about as broad as petiole; transverse, longitudinally impressed 

 above. Gaster short. Legs rather stout. 



Smooth and shining throughout. Mandibles punctate; cheeks finely 

 striolate. Erect hairs absent, except two to three short and stiff hairs on 

 petiolar node. Head and gaster with very sparse, short, recumbent pubescence. 

 Funiculus and tarsi pubescent. 



Color brownish red; gaster jet black. 



Three Sisters: Malapaina. 



Described from a few workers taken on recently felled trees. Type. 

 — M. C. Z. 9,164. 



48. Crematogaster abrupta, sp. nov. 



Worker. Length 2.50-2.75 mm. 



Head slightly longer than broad, as broad in front as behind, with convex 

 sides, broadly round occipital corners; occipital border very feebly concave 

 at middle. Mandibles 4-dentate. Clypeus convex; anterior border very 

 shallowly concave at middle. Antennal scapes not attaining occipital corners; 

 funicular joints two to seven broader than long, joint eight longer than broad; 

 terminal joint as long as the three preceding joints together. Eyes large, 

 little convex, located at sides of head slightly behind middle. Pronotum 

 flattened medially; sides submargined, humeri rounded. Promesonotal 

 impression discernible but very feeble. Mesonotum flat basally, then ab- 

 ruptly declivous, in profile angulate; margined at sides. Epinotum, except 

 for a narrow flat surface at base, concave, without distinct basal and declivous 

 portions; spines half as long as their distance apart at base, strong, acuminate, 

 divergent, curved downward. Petiolar node flat above, longer than broad; 

 anterior corners rounded, posterior obtusely angulate. Postpetiole transverse, 

 longitudinally impressed at middle. 



Shining. Mandibles subtly striolate. Head, pronotal disc, concave por- 

 tion of epinotum, and gaster finely and sparsely punctate; front of pronotum 

 and epinotum, all of mesonotum, petiole, postpetiole, and apical segment of 

 gaster microscopically rugulose. 



Without erect hairs above; with rather sparse and fine recumbent pubescence 

 on head and gaster; semierect pubescence on scapes and funiculus. 



Color uniformly brownish yellow. 



Three Sisters: Malapaina. 



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