MANX: ANTS OF THE FIJI ISLANDS. 481 



Worker. Length 6.5-7.5 mm. 



Head longer than broad, shghtly narrowed in front, sides nearly straight, 

 posterior border broadly rounded. Mandibles 5-dentate. Clypeus nearly 

 flat, anterior border broadly rounded. Antennal scapes surjiassing occipital 

 corners bj- about three eighths of their length. Eyes large, feebly convex. 

 Mesoepinotum compressed, the posterior two thirds very strongly, into a high 

 cultrate ridge, which is angulate at the posterior border. Epinotal declivity 

 narrow and flattened below. Petiolar node cuneiform, convex in front and 

 slightly so behind, distinctly margined above; seen from the front, subangulate 

 at middle of sides, concave above the angles and nearly straight along the top. 

 Gaster elongate. Legs long, femora and anterior tibiae compressed. 



Feebly shining. Mandibles densely and strongly rugose-striate. Head 

 and thorax coriaceously rugulose-punctate. Gaster transversely rugulose- 

 punctate. 



Erect hairs stiff and black, sparse on head and pronotum and lacking on 

 mesoepinotum and appendages. Gaster with more abundant, finer, and 

 brownish suberect hairs and fine and silky, regular, not dense, recumbent hairs. 



Black. Mandibles, funicuU, and tarsi reddish brown. 



Female. Length 12 mm. 



Head more slender than that of soldier, but otherwise similar. Mesonotum" 

 and scuteUum flat above, the latter a little broader than long. Epinotum 

 short and rounded in profile. Petiole from the front broader than in soldier, 

 less elevated and pointed at middle and less concave at sides. 



Sculpture, pilosity, and color as in soldier. Wings (length 11. .5 mm.) 

 clear, with brown veins and stigma. 



Male. Length 6.75 mm. 



Head a little longer than broad, with very slightly concave cheeks and 

 rounded postocular region. Ch^peus feebly convex, its anterior border con- 

 cave at middle. Scapes surpassing occipital borders by about half their length. 

 jVIandibles with two stout, blunt teeth apically. 



Color black. Legs brown. Wings very slightly infuscated. 



Ovalau: Levuka. Viti Levu: Saiaro, Xadarivatu, Xasoqo, Wai- 

 yanitu. 



Nests in populous colonies in hollow twigs. 



In addition to the difference in the shape of the epinotum and in 

 color, cristafus is a large and more robust species than laminatus. 

 The petiole of the worker minor, seen from the front is pointed, or 

 in some specimens nearly straight, but not excised. 



