534 bulletin: museum of comparative zoology. 



posteriorly. Antennae slender, the scapes reaching a little beyond the an- 

 terior half of the lateral border of the head; funicular joints 2-6 as long as 

 broad, joints 7 and 8 longer than broad; basal joint of clava f as long as the 

 terminal joint. Pro- and mesonotum in profile very convex, rounded, hemi- 

 spherical, without promesonotal suture, from above half as broad as the head, 

 as broad as long, narrowed behind to the deep mesoepinotal constriction. 

 Epinotum short, its base straight in profile and shorter than the sloping 

 declivity, with a pair of erect, flattened teeth which are as long as broad at the 

 base and curved forward and outward. Their bases are continued as a pair 

 of anteriorly converging ridges on the base of the epinotum and posteriorly as 

 a pair of parallel ridges down the sides of the declivity. Petiolar node small, 

 angular in profile, with both the anterior and posterior slopes straight, its 

 ventral outline evenly convex. Postpetiole large, three times as broad as the 

 petiole, as long as broad, slightly narrower in front than behind, evenly 

 roimded and convex above, but not higher than the petiole. Gaster smaller 

 than the head, with straight anterior border. Legs rather long. 



Very smooth and shining. Mandibles with a few small, very sparse punc- 

 tures, their bases striated. Sides of clj^Deus, cheeks, and space on each side 

 medial to the frontal carinae longitudinally striated. Mesopleurae and 

 epinotum subopaque, the former very finely punctate-rugulose. 



Hairs golden yellow, very sparse, erect, and rather long on the dorsal sur- 

 face of the body, on the legs more numerous, fine and appressed. 



Red; gaster and legs yellow. 



Worke7- minima. Length, L5-1.8 mm. 



Resembling the large worker, except in the small size of the head, which is 

 more distinctly longer than broad, with more convex sides and more rounded 

 posterior angles. Eyes smaller, a little in front of the middle of the sides. 

 Mandibles, pro- and mesonotum less convex, the apical margins of the former 

 oblique, with more acute teeth. Teeth of epinotum very small and slender, 

 directed up^Vards. 



Sculpture, pilosity, and color as in the larger worker. 



Described from nine maxima and two minima workers from Mokan- 

 shan (Gee). Some of the former are almost intermediate in the size 

 of the head between the two extremes. I am not certain that the 

 largest really represent the maxima of this species which is closely 

 related to such small Pheidologetons as nanus Roger of India and 

 especially to yanoi Forel of Formosa. 



17. Pheidole rhombinoda Mayr. 



Many soldiers and workers from Soochow and Mokanshan ; females 

 and males from Soochow and between Shanghai and Soochow (Gee). 



