424 bulletin: museum of comparative zoology. 



with the pronounced promesonotal impression, dorsal surface feebly concave. 

 Petiole from above subconical, broadest behind and evenly narrowed toward 

 front, with rounded posterior corners; in profile, longer than high and highest 

 behind, with short, abrupt anterior face, feebly convex dorsum, and short, 

 rather concave, posterior surface. Gaster long and slender. 



Very shining. Mandibles punctate. Clypeus and front of head outward 

 from antennae rugulose and punctate, remainder of head coarsely punctate, 

 the punctures not so close behind as in front. Thorax and abdomen with 

 finer and more widely separated punctures. 



Hairs fine, erect, abundant on head, sparse on thorax and abdomen, coarser 

 and suberect on appendages. 



Jet black, tip of gaster and appendages brown. 



Male. Length 4 mm. 



Differing from the male of letilae in its very much smaller size and in the 

 shape of the petiole, which is proportionately longer and has the upper and 

 posterior surfaces broadly i-ounding into each other and not distinct as in 



leiilae. 



Viti Levu: Waiyanitu. 



The punctation of the head and body of the worker is stronger and 

 more widely separated than in the other Fijian species, and the head 

 very much longer and distinctly broadened in front. The body is 

 slender and delicately formed. 



I found this species only once. A small colony was in the ground 

 beneath a stone in a heavily wooded gully. Type. — M. C. Z. 8,692. 



17. Leptogenys (Lobopelta) vitiensis, sp. nov. Fig. 10. 



Worker. Length 8 mm. 



Head nearly twice as long as broad, broadest in front, sides feebly convex, 

 posterior angles rounded, border straight. Basal and apical edges of mandibles 

 broadly rounding into each other, the surface of the latter slightly convex to 

 near tip, then a little concave, edentate. Clypeus triangular, narrow, and 

 elongate, strongly and acutely cariixate for entire length. Antennal scapes 

 surpassing occipital border by three eighths of their length; second funicular 

 joint the longest, remaining joints elongate, cylindrical and decreasing in 

 length toward the tip; terminal joint a little shorter than the two preceding 

 joints together. Eyes moderately convex, situated at a distance from base of 

 mandibles about equal to their longitudinal diameter. Pronotum a little 

 longer than broad. Mesoepinotum without suture, very sUghtly convex above 

 and broadly rounding into the short, flat declivous portion. Petiole very long. 



