436 bulletin: museum of comparative zoology. 



and postpetiole irregularly, transversely striate. Basal third of first gastric 

 segment finely striate and densely punctate between the striae. 

 Color and pilosity as in soldier. 



Viti Levu: Nadarivatu. 



Very common in, and apparently restricted in distribution to, the 

 mountains about Nadarivatu, where numerous colonies were found 

 beneath stones and logs. Near P. vatu Mann, but much larger, with 

 the sides of the postpetiole merely subangulate and not extended as 

 spinose processes. Type.— M. C. Z. 8,697. 



26. Pheidole oceanica Mayr. 



Sitz. Akad. wiss. Wien, 1866, 53, p. 510, ^ , 21. 



Viti Levu: Nadarivatu, Nausori, Nasoqo. Vanua Levu: Suene, 

 Labasa, Lasema. Ovalau: Levuka. Taviuni:' Somo Somo. Kad- 

 avu: Vunisea. Lau: Tuvuca. Vanua Mbalava: Loma Loma. 



27. Pheidole knowlesi, sp. nov. Fig. 13a. 



Soldier. Length 3 mm. 



Head one fourth longer than broad, narrowed in front, sides at anterior 

 two thirds nearly straight, occipital corners broadly rounded, border narrowly 

 and moderately strongly concave at middle, vertex impressed at middle, rather 

 strongly. Mandibles rather long, their blades with three triangular teeth 

 basally, two larger ones at apex and a series of small denticles between. Cly- 

 peus flat, very feebly concave at middle of anterior border. Frontal carinae 

 feebly elevated, bordering shallow scrobes that extend slightly beyond tips of 

 scapes. Scapes extending about five eighths the distance to occipital corners; 

 first funicular joint nearly as long as the three following joints together; joints 

 2-8 slightly longer than broad, club moderately large, a little shorter than 

 remainder of funiculus, terminal joint nearly as long as the other two together. 

 Eyes small, little convex, situated at anterior third of sides of head. Pro- 

 mesonotal impression distinct. Sides of pronotum angulately produced; 

 humeri rounded. Mesonotum rather flat above, declivous behind and sub- 

 angulate between the two surfaces. Base of epinotum about as long as 

 declivity; spines erect, triangular, as long as their distance apart at base. 

 Petiole short, node in profile bluntly triangular; flat above, with the sides 

 subangulate. Postpetiole a little lower than petiole, twice as broad as long, 

 with sides conically produced at middle. Legs rather stout. 



Shining, the thorax less strongly than head and gaster. Mandibles finely 



