104 bulletin: museum of comparative zoology. 



150a. Prenolepis (Nylanderia) butteli Forel subsp. bryantI 



Forel. 



Prenolepis {Nylanderia) hutteli Forel subsp. bryanti Forel, Rev. Suisse zool. 

 1916, 24, p. 439, ^ . 



Type-locality: Mt. Matang, West Sarawak (G. E. Bryant). 

 Worker. Length 1.5 mm. 



Head subrectangular, as broad as long, nearly as broad in front as behind 

 with rounded sides and posterior corners and feebly convex posterior border. 

 Eyes moderatel}^ large, flat, just behind the middle of the sides. Mandibles 

 narrow, with straight external and short, minutely 5-toothed apical borders. 

 Clypeus very convex, but not carinate, its anterior border entire and rounded. 

 Frontal carinae short, as far apart as their distance from the sides of the head. 

 Antennae slender, scapes extending about ^ their length beyond the occipital 

 border of the head; second funicular joint small, broader than long, joints 

 3-6 a little longer than broad. Thorax short, with distinct promesonotal 

 and mesoepinotal sutures, very feeble and short mesoepinotal constriction, the 

 pro- and mesonotum rather flat ; the epinotum with very short and transverse, 

 feebly convex base, passing rapidly into the long sloping declivity. Petiole 

 with very short, low node, a mere anteriorly directed projection at the anterior 

 end of the segment, much as in some species of Tapinoma. Gaster with the 

 first segment concave in front and lying over the petiole. 



Head and thorax subopaque; mandibles, legs, antennae, and gaster more 

 shining; mandibles sparsely and finely punctate; the head, thorax, and gaster 

 distinctly shagreened, the gaster transversely. 



Hairs dark brown, coarse, sparse, erect, blunt, except on the anterior portion 

 of the head; body without, antennae and legs with extremely short, appressed, 

 whitish pubescence. 



Castaneous brown; head, thorax, and gaster with pronounced metallic 

 reflections, the head and pronotum more blue, the gaster and remainder of the 

 thorax more violet. Mandibles, antennae, tarsi, middle and hind tibiaef 

 knees, and ends of tibiae of fore legs, and tips of hind femora whitish yellow. 



A single specimen from Sarawak, received from Prof. Roland 

 Thaxter. 



Forel's description is very brief and is hidden away in the midst 

 of a paper devoted to Congolese ants! 



151. Pseudolasius mayri Emery. 



Lasius familiaris Mayr, Reiss Novara. Zool., 2. Formicid., 186.5, p. 55, 9 

 {nee Smith). 



