i9o6.] Wheeler, The Ants of Japan. 305 



its anterior border nearly straight, its middle portion projecting between the 

 carinas as a small rounded protuberance. Frontal groove distinct, extending 

 back beyond the middle of the head. Antennal scapes incrassated at their 

 tips and not reaching the posterior corners of the head by a distance equal to 

 twice their greatest diameter. First funicular joint nearly as long as the 

 three preceding joints taken together; second joint as long as broad, joints 

 3-7 distinctly broader than long; joints 8-10 as broad as long; terminal joint 

 nearly as long as the three preceding joints and forming with them a 4-jointed 

 club, which is much thicker than the basal portion of the funiculus. Thorax 

 with pronounced promesonotal and mesoepinotal sutures; pronotum some- 

 what narrower than the head, rounder in front and on the sides, nearly twice as 

 broad as long; mesonotum shorter and narrower than the pronotum, slightly 

 convex; epinotum as long as the pronotum, but only half as broad, laterally 

 compressed, its basal surface in profile straight, slightly lower than the meso- 

 notum, distinctly longer than the declivity which is abrupt and has rounded 

 lateral edges. Petiole from above as broad as the epinotum, somewhat 

 broader than long, broader behind than in front; in profile a little higher than 

 the epinotum, narrower above than below, with flattened and vertical anterior, 

 truncated upper, and somewhat convex posterior, surfaces. Constriction be- 

 tween the first and second gastric segments rather indistinct. Legs stout ; those of 

 the middle and hind pairs, each with a pectinated and a simple spur; middle tibia 

 and metatarsus bristly on their extensor surfaces, the latter joint much shorter 

 than the hind metatarsus. 



Clypeus and mandibles very smooth and shining, the latter sparsely and 

 coarsely punctate. Head opaque, densely and finely punctate, frontal groove 

 shining. Thorax, abdomen and appendages subopaque or in some specimens 

 shining, more sparsely punctate than the head. 



Body and appendages covered with yellow pubescence and suberect hairs 

 of the same color, which are most conspicuous on the gaster and legs. 



Mandibular teeth black, remainder of the body uniformly ochraceous. 



Female, Length 4 mm. 



Differs from the worker in color, the upper surface of the head, except its 

 anterior third, the petiole and gaster dark brown or blackish. In some speci- 

 mens this color extends over the sides of the mesonotum and the upper surface 

 of the pronotvim. Wings opaque, distinctly and uniformly infuscated. 



Described from a number of workers and females (mostly dealated) 

 taken by Mr. Hans Sauter, March 25, '05 at Yamanaka, Suruga (" 1700 

 ft. ; under stones"), and April 15, '05 at Takakiyama, near Kanagawa 

 on the Sagami Gulf. 



This species is closely allied to the palearctic P. ochracea Mayr, of 

 which Professor Emery has sent me a worker and a female specimen. 

 The Japanese species is darker in color and has a shorter head, which 

 is broader behind with its sides converging anteriorly and thicker 

 antennae with more club-shaped funiculi. 



[Sept., 1Q06.] 20 



