352 bulletin: museum of comparative zoology, 



front as behind, in the finer striation of the mandibles, and in color. 

 From the closely related viusculus Forel mayri differs in the shape of 

 the petiole which is not transverse. The punctation of the entire 

 dorsum of the first gastric segment is distinctive. 

 Typc—M. C. Z. 9,178. 



81. Triglyphothrix pulchella, sp. nov. 



Worker. Length 1.75-2 mm. 



Head longer than broad, little broader behind than in front, with feebly 

 convex sides, rounded posterior corners and shallowly concave border. Mandi- 

 bles 6-dentate, the three basal teeth indistinct. Clypeus convex, carinate at 

 middle, broadly rounded in front. Antennae stout, their scapes extending 

 three fourths the distance to occipital corners, funicular joints two to eight 

 transverse, terminal joint longer than the two preceding together. Thorax 



Fig. 31. — Triglyphothrix pulchella Mann. Worker. Lateral view of thorax and petiole. 



robust, humeral angles narrowly rounded. Epinotal spines slender, longer 

 than the distance between them at base and strongly divergent. Petiolar 

 node a little broader than long; pedicel short. Postpetiole a little broader 

 than long and only slightly broader than the petiole. 



Subopaque, except terminal half of gaster which is shining. Mandibles 

 somewhat shining, punctate, and striolate. Head, thorax, epinotum (except 

 declivous portion), petiole, and postpetiole coarsely and densely punctate. 

 Basal half of first gastric segment punctate and longitudinallj' striate, the rest 

 finely punctate. Legs and antennae somewhat shining and finely punctate. 



Pilosity short, white, and abundant. 



Color pale brown; legs, antennae and mandibles lighter, head yellow. 



Female (dealated). Length 2.25 mm. 



Similar to worker. The ocelli are small. The mesothorax and scutellum 

 are rather flat and longitudinally carinate at middle. The striation at base 

 of gaster is stronger than in the worker. 



Malaita: Auki. 



