MANN: ANTS OF THE BRITISH SOLOMON ISLANDS. 321 



This form was much more abundant than the preceding and was 

 found in the same locality. I failed to locate the nests of either. 

 Tyve.— M.. C. Z. 9,165. 



49. Crematogaster foxi, sp. nov. 



Worker. Length 2.50-2.75 mm. 



Head with strongly convex sides, rounded occipital corners and concave 

 border. Mandibles 4-dentate. Anterior border of clypeus straight. Anten- 

 nal scapes extending four fifths the distance to occipital corners; first funicular 

 joint as long as the three succeeding joints; joints two to eight almost as long 

 as broad; terminal joint shorter than the three preceding joints. Eyes large 

 and moderately convex, situated at sides of head posterior to middle. Thorax 

 slender. Pronotum margined at sides, humeri rounded, disc slightly convex. 



Fig. 23. — Crematogaster foxi Mann. Worker. Lateral view of thorax and petiole. 



Mesonotum at sides with a narrow elevated margin, the surface shallow, con- 

 cave, and, posterior to middle, sloping to the deep mesoepinotal impression. 

 Epinotum shallowly concave; spines subtriangular, acute, half as long as 

 their distance apart at base and almost straight. Petiolar node slightly longer 

 than broad, narrowed in front, with roimded anterior and angulate posterior 

 corners. Postpetiole a little broader than long, longitudinally impressed 

 above. Gaster elongate. 



Shining. Mandibles and cheeks striate. Clypeus with one strong and 

 several very feeble costae at sides. Pronotum with longitudinal costae, two 

 of which extend as borders to the mesothorax. Epinotum with indistinct 

 costae. Petiolar node and base of postpetiole microscopically rugulose, the 

 rest smooth. 



Scattered, very long, and erect yellow pile present everywhere, except on 

 legs and antennae where it is fine and semirecumbent. 



Color yellow. 



Female. Length 6.50 mm. 



The striation of the mandibles is much coarser than in the worker. The 

 head and body are smooth and shining, not costate. The wings are hyaline, 



