- 271 — 



typical species of the two subgenera This statement is also made 

 by Forel concerning C. australis, but two types of this species 

 in my collection have the first gastric segment very nearly as 

 long as in 'papiianus, pusilliis and silcestrii. For the present^ 

 nevertheless, it seems to be more advisable to place all the spe- 

 cies of Cerapachys with 9-jointed antennae in the subgenus Syscia. 



2. — Poiiera perkinsi Forel. 



Fourteen workers and three males from Kilauea Three of 

 the former have large eyes lil<;e one described by Forel, but dif- 

 fer in no other respects from the normal workers. The males are 

 ergatomorphic. 



Male. Length 2.8 — 3 mm. 



Resembling the ergatomorphic male of P. eduardi. Head a- 

 bout as broad as long, convex above and on . the sides, with 

 straight, posterior border. Mandibles small, folded under the nar- 

 ro w^, convex clypeus, which is nearly as long as broad. Eyes 

 small, consisting of only 9 or 10 facets, situated at the anterior 

 fifth of the head. Ocelli absent. Antennte 13-jointed; scape as long- 

 as the first four funicular joints; nearly three times as long as 

 broad; joints 2-6 broader than long, 7 and 8 as long as broad, 

 remaining joints somewhat longer than broad. Thorax similar to 

 that of the woker but mesonotum more convex and epinotum 

 much more rounded and sloping, and without a distinct angle 

 between the base and declivity. Petiole and gaster like those of 

 the worker, but the former with the node more rounded and some- 

 what more conical, the latter with the typical male appendages. 



Surface of head, thorax and abdomen shining and very fine- 

 ly punctate. 



Body and appendages clothed with short, whitish pubescence 

 and without erect hairs. 



Sordid yellow; margin of eyes and clypeus and the frontal 

 groove blackish. Occiput, sutures of thorax, articulations of legs, 

 especially the knees and the stridulatorj- organ of the gaster, 

 brown. 



