wheeler: CHINESE ANTS. 545 



49. Camponotus (Myrmoturba) nicobarensis Mayr var. exiguo- 



GUTTATUS Forel. 



Several workers and three females from Hong-kong (Terry) and a 

 single worker from Dei Chow, East River (IMuir). The typical form 

 of the species occurs in the Nicobars, Burma, Assam, and China. 

 The varieties exiguoguttatus and monticola Emery are merely darker 

 forms. 



50. Camponotus (Myrmosericus) rufoglaucus (Jerdon) subsp. 



PARI A Emery. 



A worker minor from Macao (Muir). 



51. Camponotus (Colobopsis) laotsei, sp. nov. 



Soldier. Length, 4-4.5 mm. 



Head large, rectangular from above, about 1^ times as long as broad, dis- 

 tinctly broader in front than behind, the posterior and lateral borders straight, 

 the obliquely truncated anterior surface broadly and transversely elliptical, 

 concave with very sharp border. Eyes moderately large, well behind the 

 middle of the head. Median portion of cl>T3eus somewhat concave but 

 sharply carinate, parallel-sided, Ih times as long as broad on the truncated 

 surface and extending onto the dorsal surface of the head where it forms a 

 pair of angular projections when seen from above. Lateral portions of cl^peus 

 distinct, convex, triangular. Mandibles convex, about as broad as long, with 

 four subequal teeth, the basal third of the apical border toothless, straight, 

 and forming a perfect right angle with the basal border. Frontal carinae far 

 apart, straight, and diverging. Frontal area small, impressed; frontal groove 

 distinct as a shining line. Antennal scapes curved, not much thickened 

 apically, their tips reaching half-way between the posterior orbits and the 

 posterior corners of the head. Thorax only as long as the head, narrower, 

 tliick-set, evenly contracted behind, with distinct promesonotal and meso- 

 epinotal sutures, the dorsal outline in profile straight and feebly sloping 

 posteriorly; pronotum convex in front, epinotum with subequal base and 

 declivity meeting at a very broadly rounded angle. Petiole small and very 

 low, its superior border transverse and very blunt, distinctly emarginate in 

 the middle. Gaster as long as the head and thorax together. Legs rather 

 short, fore femora incrassated. 



Shining; head and thorax sharply shagreened, the gaster transversely; 

 anterior half of head more opaque, especially above and on the sides, densely 

 and rather finely punctate-rugulose. Mandibles more shining, finely sha- 

 greened and indistinctly and finely punctate. 



