MANN: ANTS OF TlIK MKITISII SOLOMON ISLANDS. 367 



99a. Prenolepis (Nylanderia) obscura Mayr, subsp. 

 BiSMARCKENSis Forel. 



Mitt. Zool. mus. Berlin. 1901, 2, heft 1, p. 2G, U 9 cf . 



San Cristoval: Wainoni Bay. Ysabel: Fulakora. 



100. Prenolepis (Xylanderia) stigmaticus, sp. no v. 



J]'orker. Length 2.25-3.25 mm. 



Head elongate nearly as broad in front as behind; sides slightly convex; 

 posterior border nearly straight. Mandibles slender, arcuate with six acute 

 triangular teeth, the tliird and fifth distinctly smaller than the others. Cly- 

 peus convex, broadly rounded in front. Antennae very long and slender, 



Fig. 41. — Prenolepis (Nylanderia) stigmaticus Mann. Worker. Lateral view wf head, 

 thorax, and petiole. 



their scapes surpassing occipital corners by five eighths their length; first 

 funicular joint nearly twice as long as the second; joints three to seven about 

 four times as long as broad; joints eight to ten a little shorter; terminal joint 

 shorter than the two preceding joints together. Eyes large and convex, situ- 

 ated in front of sides a Uttle anterior to middle. Pronotum about as long as 

 broad, slightly convex. Mesonotum much longer than broad; the flat meso- 

 epinotal suture strongly impressed. Basal portion of epinotum very convex 

 and rounding into the flat decUvous sm-face which it equals in length; stigmata 

 situated at middle of sides of declivity prominently tuberculate. Petiolar 

 node broadly cuneiform. 



Shining, mth shallow microscopic punctures on head. Mandibles subtly 

 punctate. 



