mann: ants of the British solomon islands. 319 



convex, situated at sides of hiead, well behind middle. Promesonotum flat- 

 tened, without suture; hjameral angles narrowly rounded. Epinotum bearing 

 two extraordinarily long and massive spines, which are thickened at middle 

 half, acute apically and divergent, the distance between the tips about equal 

 to the length of one spine. Petiole long and depressed, thfe node longer than 

 broad, broadest behind, with posterior corners elevated and obtusely angulate. 

 Postpetiole broader than long, subangulate at sides. 



Shining. Mandibles striate. Clypeus with five or six longitudinal costae. 

 Remaining parts of head and body finely punctate. Pilosity very long and 

 sparse; finer, shorter, and semirecumbent on antermae and legs'. 



Color black, except mandibles, funiculus, and tarsi which are yellow. The 

 basal half of funiculus is somewhat fuscous and terminal half clear yellow. 



Malaita: near Fourafi in the interior. 



The few workers on which the description is based were taken run- 

 ning about on stones at the edge of a stream where we stopped for 

 lunch on our walk across the island. Type. — M. C. Z. 9,163. 



This species is distinct from paradoxa Emery in the shape of the 

 spines, which are more thickened, straighter, and less divergent. 



47. Crematogaster elysii, sp. nov. 



Worker. Length 2 mm. 



Head subquadrate, about as long as broad; sides convex, occipital angles 

 broadly rounded, posterior border nearly straight. Mandibles short, 4-den- 

 tate. Clypeus convex, feebly concave at middle of anterior border. Antennae 



Fig. 22. — Crematogaster elysii Mann. Worker. Lateral view of thorax and petiole. 



11-jointed, scapes not attaining occipital border; funicular joints two to seven 

 moderately transverse, joint eight slightly longer than broad, terminal joint 

 stout, as long as the three preceding joints together. Pronotum bluntly 

 margined at sides; humeri angulate. Mesonotum rather flatter than pro- 

 notum and in a different plane, but not separated by impression. Basal 

 portion of epinotum broad and shallowly concave, not distinctly separated 

 from declivity. Epinotal spines half as long as the distance between them 



