454 bulletin: museum of comparative zoology. 



feeble and on the front between them are several short and weak interrupted 

 striae. 



Viti Levu: Nadarivatu. 

 Type.— M. C. Z. 8,705. 



40. RoGERiA (Irogera) striatella, sp. nov. Fig. 19. 



Worker. Length 2.10-2.25 mm. 



Head subquadrate, distinctly longer than broad, sides nearly straight, 

 posterior border straight. Mandibles with six acute triangular teeth, the 

 three apical ones larger than the others. Clypeus with flat basal and apical 

 halves separated by an obtuse angle, anterior border rounded. Frontal area 

 strongly impressed but not sharply outlined. Frontal carinae nearly straight, 



Fig. 19. — Rogeria (Irogera) striatella Mann. Worker. Lateral view of thorax and petiole. 



moderately divergent, as long as the antennal scapes and bordering broad, 

 well-defined scrobes. Antennal scapes thick, extending four fifths the dis- 

 tance to occipital corners; funicular joints 2-8 transverse, club slender, about 

 as long as the remainder of funiculus, with the terminal joint longer than the 

 other two together. Eyes large, feebly convex, situated at sides of head in 

 front of middle. Pro- and mesothorax subglobose, suture barely discernible, 

 humeri narrowly rounded. Mesoepinotal impression strong. Epinotum flat 

 at base, then strongly concave and margined at sides, separated from declivity 

 by a margined angle; declivity concave; spines about as long as their distance 

 apart at base, strongly divergent, inferior spines short, triangular. Peduncle 

 a little shorter than petiolar node, with a short, stout antero ventral tooth; 

 node broader than long; in profile as long as high, highest in front. 



Shining. Mandibles sparsely, very delicately striate and punctate. Front 

 and vertex with fine, interrupted longitudinal striae, rugulose between; the 

 striae on occiput reticulate and interspersed with large punctures; scrobe 

 rugulose in front, nearly smooth behind. Thorax above at middle mostly 

 smooth, but with scattered short, twisted rugulae, toward the sides rugulose. 

 Epinotum, petiole, and postpetiole coarsely and irregularly striate transversely. 



