3 20 Bulletin American Museum of Natural History. [Vol. XXII , 



Hairs yellowish, inconspicuous, absent except on the mandibles. Pubescence 

 whitish, very short and sparse, most distinct on the gaster and appendages. 



Dull yellowish brown, gaster somewhat darker, mandibles, antennae and legs 

 yellow; femora and scapes brownish. 



Described from numerous specimens collected by Mr. Hans Sauter 

 at Yamanaka, Suruga ("iioo ft., sifted in deciduous forests"); 

 Kanagawa and Takakiyama. 



This species which at first sight resembles a pale Tapinoma 

 erraticimi or T. sessile is closely related to Technomyrmex albipes 

 It differs in its lighter color and the more gibbous structure of the 

 epinotum as I find by comparison with specimens of that species from 

 India and Madagascar. In these same characters and its smaller 

 size T. gibhosus differs from T. mayri Forel of Madagascar. It differs 

 from T. grandis Emery of Sumatra in lacking the erect hairs on the 

 legs and antennal scapes and from T. strenuus Mayr of Borneo and 

 Singapore in lacking the long hairs on the gaster, though it seems 

 to resemble this species in the shape of the epinotum. Finally from 

 T. modigliani Emery of Sumatra, the Japanese species may be readily 

 distinguished by its much narrower head, feebler clypeal notch, shorter 

 funicular joints, etc. 



Subfamily Camponotin^. 

 31. Prenolepis flavipes {F. Smith) Mayr. 



Tapinoma flavipes F. Smith, Trans. Ent. Soc. London, 1874, p. 404, $ $ 



Prenolepis flavipes MAYR,Verhandl. zool. bot. Ges.Wien, XXXVI, 1886, p. 363. 



Prenolepis flavipes Forel, Ann. Soc. Ent. Belg., XLV, 1901, p. 371. 



Prenolepis flavipes Forel, Bull. Soc. Ent. Suisse, X, 7, 1900, pp. 269, 

 270, 9 c? 

 \ Worker. Length 1.5- 1.7 mm. 



Mandibles 6-toothed. Head distinctly longer than broad, with rounded 

 posterior angles. Clypeus convex, barely carinate, its anterior border deeply 

 and rather broadly excised in the middle. Antennal scapes projecting for fully 

 I of their length beyond the posterior corners of the head; funicular joints all 

 longer than broad. Pronotum broader than long; mesoepinotal depression 

 pronounced, fiat at the bottom, longer than the transverse diameter between the 

 two stigmata. Epinotum with a short convex basal surface, passing insensibly 

 into the longer and flatter declivity. Petiole low, in profile with convex ventral 

 border and node inclined forward, the latter with both its anterior and posterior 

 slopes slightly convex; edge viewed from behind straight. 



Whole body smooth and shining; mandibles finely striated. 



Hairs yellow; long, erect and tapering on the body; shorter and suberect 

 on the legs and antennal scapes. Pubescence grayish, distinct on the head, 

 antennse and legs, but almost imperceptible on the remainder of the body. 



