•MANN: ANTS OF THE BRITISH SOLOMON ISLANDS. 381 



115. PoLYRHACHis (Charyomyrma) rere, sp. nov. 



Worker. Length 3.5-4 mm. 



Head a little longer than broad and somewhat narrowed in front, sides in 

 front of eyes feebly convex, posterior border broadly rounded. Clypeus cari- 

 nate, front lobed, the middle portion concave and obtusely dentate at sides. 

 Front carinate at middle between frontal carinae. Frontal carinae widely 

 separated, moderately elevated and little divergent behind. Eyes strongly 



Fig. 51. — Polyrhachis (Charyomyrma) rere Mann. Worker. Lateral view of thorax 

 and petiole. 



convex, situated at posterior corners of head. Pronotum twice as broad as 

 long, slightly convex, narrowly margined at sides ; humeri with small triangular 

 teeth that are a little longer than broad. Meso- and epinotum without suture, 

 flat above, narrowly margined at sides. Base of epinotum very broadly 

 rounding into the dechvity. Epinotal spines a little longer than half their 

 distance apart at base, slender, divergent, and nearly straight. Petiolar node 

 mth flat anterior and posterior surfaces, strongly narrowed and submargined 

 above; seen from the front, the border is obtusely angulate at middle; spines 

 short, rather stout, arcuate, and parallel with base of gaster. 



Opaque, except gaster which is moderately shining. Mandibles with coarse, 

 separated striae and, at apex, large punctures. Head densely striolate- 

 rugose. Thorax and epinotum similarly but not as coarsely sculptured. Epi- 

 notal and petiolar spines and dorsal margin of petiole shining and rugose. 

 Gaster, legs, and antennae densely punctate. 



Fine, long, erect pile, abundant on head, body, and appendage, and rather 

 long, appressed silvery pubescence on head and body, thick on gaster and 

 sparser elsewhere. 



Black throughout. 



Guadalcanar : Rere. 



