444 bulletin: museum of comparative zoology. 



33. Monomorium (Monomorium) vitiensis, sp. nov. 



Worker. Length 1.10-1.25 mm. 



Head much longer than broad, as broad in front as behind, sides feebly 

 convex, posterior border nearly straight. Mandibles with four triangular 

 teeth. Clypeus very convex, rounded at anterior border. Antennae 12- 

 jointed, slender, their scapes nearly attaining occipital corners; funicular 

 joints 2-8 strongly transverse; club slender, much longer than remainder of 

 funiculus, terminal joint longer than the other two together. Eyes small, 

 situated in front of middle of sides of head. Promesothorax strongly convex. 

 Mesoepinotal impression strong. Base of epinotum a little longer than the 

 declivity, submargined laterally, concave apically, with the corners unarmed 

 and obtusely angulate. Petiolar node in profile longer than the peduncle, 

 narrowed and rounded above. Postpetiole twice as broad as long and as 

 broad as the petiole; in profile, lower than petiole. Gaster elongate. Legs 

 long and slender. 



Very shining. Finely punctate throughout. 



Hairs rather coarse and moderately abundant on head, body, and appendages. 



Pale yellow. 



Taviuni: Somo Somo. 



De.scribed from a small .series of workers found beneath stones on a 

 dry hillside. Type— M. C. Z. 8,700. 



Monomorkan talpa Emery from New Guinea and the Solomons is 

 closely related but has the head distinctly shorter than in vitiensis and 

 the antennal scapes extend beyond the occipital border. 



r 



34. SoLENOPSis CLEPTEs Mann, var. vitiensis, var. nov. 



Worker. Length 1.25-1.50 mm. 



Differing from typical cleptes of the Solomons in its larger size and paler 

 coloration, being very light j^ellow in color with the first gastric segment 

 strongly infuscated. 



Viti Levu: Nasoqo (Type-locality), Tai Levu. 



Several extensive colonies were found in small pockets in clay banks. 



35. Pristomyrmex mandibularis, sp. nov. 



¥ 



Worker. Length 2.50 mm. 



Head about as long as broad, sides convex, posterior angles rounded, border 

 broadly rounded. Basal edge of mandibles projecting at middle in the form 



