546 bulletin: museum of comparative zoology. 



Hairs erect, whitish, short and extremely sparse, visible only on the head> 

 gaster and tips of femora. Cheeks with short but distinct pubescence. Legs 

 and scapes with still shorter, appressed hairs. 



Black or dark brown; mandibles and anterior third of head red, antennae 

 and legs paler brown, the femora infuscated, except at their bases and tips;, 

 tarsi and first funicular joint yellowish. 



Worker. Length, 2.3-2.4 mm. 



Head small, longer than broad, as broad behind as in front, convex above, 

 with subparallel sides and nearly straight occipital border. Eyes large, nearly 

 J as long as the sides of the head, feebly convex. Mandibles narrow, appar- 

 ently 4-toothed, folded under the clyi^eus, which is convex but ecarinate, 

 trapezoidal, somewhat broader than long, with entire, broadly rounded 

 anterior border. Frontal carinae short, slightly diverging. Antennal scapes 

 extending about J their length beyond the occiput. Thorax and gaster 

 shaped much as in the soldier, but the petiolar node is convex in front and flat 

 behind and has a sharp, obscurely emarginate superior border. 



Sculpture, pilosity, and color as in the soldier, except that the mandibles 

 and anterior portion of the head are as dark as the remainder and not punctate- 

 rugulose. 



Described from three soldiers and three workers taken by Professor 

 Gee at Mokanshan. 



This species is rather closely allied to truncata Spinola of Europe 

 and especially to rothneyi Forel of India. These species, however, 

 have the anterior portion of the head much more coarsely sculptured. 

 The typical rothneyi is also of a very different color, haiing the head 

 and thorax testaceous red and the gaster black. Forel has recently 

 described -a black form from Formosa as C. rothneyi var. taivanae 

 from a female specimen measuring 6 mm. This may, perhaps, be 

 cospecific with the soldier and worker described above. 



52. POLYRHACHIS L.\MELLIDENS F. Smith. 



Workers from Mokanshan and Soochow (Gee) agreeing in all 

 respects with specimens from Japan, the type-locality. This ant is 

 also known from Hong-kong. 



53. PoLYRHACHis (Myrma) pyrgops Vichmeyer. 



Two workers from Hong-kong (Terry) and seven from Mokanshan 

 and one from Ziang San, near Ningpo (Gee). 



