390 bulletin: museum of comparative zoology. 



The different forms of rastellata build nests of vegetable fibres inter- 

 woven with silk, selecting as a site the tip of a leaf, usually that of a 

 palm. The sides of the leaf are drawn somewhat together and fast- 

 ened with silk form a partial and sometimes an entire covering of the 

 nest. Type — M. C. Z. 9,190. 



122c. POLYRHACHIS (CyRATOMYRMa) RASTELLATA Latreille, Var. JOHN- 



soNi, var. nov. 

 Worker. Length 7 mm. 



Resembling laevior var. debilis Emery in having on the epinotum a pair of 

 distinct though very short and small spines. It is much larger in size than 

 debilis and the legs are uniformly dark brown, almost black. 



The thorax is evenly arched, much as in leonidas Forel and the epinotal 

 declivity in profile is straight. 



Rendova. 



One colony was found, in a silk and carton nest on a palm leaf. 

 Type — M.C.Z. 9,195. 



123. PoLYRHACHis (Cyrtomyrma) emeryana, sp. nov. 



Worker. Length 5 mm. 



Head a little broader than long, broadly rounded behind and rather strongly 

 narrowed in front. Cl3rpeus only moderately convex, shallowly concave at 

 middle of anterior border. Frontal carinae little divergent, extending to 



Fig. 59. — Polyrhachis (Cyrtomyrma) emeryana Mann. Worker. Lateral view of 

 thorax and petiole. 



opposite middle of eyes, in profile elevated and evenly rounded in front. 

 Antennal scapes surpassing occipital corners by about five eighths of their 

 length. Pronotmn broader than long, strongly convex above. Mesoepinotum 



