164 FOBMICIDjE. 



abdomen, pale reddish yellow and more or less recumbent. Head 

 small ; eyes and ocelli remarkably large ; mandibles subtriangular, 

 longitudinally striate, the masticatory margin with one large, 

 broad, triangular apical tooth, very acute at apex, and widely 

 divided from four smaller inner teeth ; clypeus very convex ; eyes 

 and ocelli very large and prominent ; antennae filiform, the scape 

 short, equal in length to the basal three joints of the flagellum. 

 Thorax as in the 2 , but smaller and less massive ; the scutelluin 

 very prominent and gibbous, the metauotum short and without 

 spines. Pedicel short and thick, the nodes scarcely raised, 

 attached to the abdomen by the whole posterior face of the 2nd 

 node ; abdomen broadly oval ; the external genital laminae broad 

 and pale yellowish. 



Length, I/ 4-5-13 ; $ 2-5-3'5 ; 2 19-20; <$ 13 mm. 



Hob. Sikhim (Holler) ; Bengal (Rothney) ; Western India, 

 Poona (Wroughton), Kauara (Aitke,i), Calicut, Travancore (Roth- 

 ney) ; Burma and Tenasseriin (Fea fy Bingliam). Extending into 

 he Malayan subregion. 



The type, a $ , of P. taprobance, Smith, is in the British Museum 

 collection, but though smaller, as Dr. Mayr long ago noted (Verh. 

 zool.-bot. Ges. Wien, xxxv (1836), p. 360), there is absolutely no 

 difference in form, sculpture, or colour from P. diversus. 



188. Phidologiton affinis, Jerdon (Ocodoma), Madr. Jour. L. S. xvii 



(1851), p. 110, 7/ $. 



Atta bellicosa. Smith, Cat. vi (1858), p. 164, . 

 Solenopsis laboriosa, Smith, Jour. Linn. Soc. vi (1861), p. 43, $ . 

 Solenopsis calida, Smith, op. cit. vii (1863), p. 22, $ . 



1J. max. Resembles P. diversus, but is not quite so large and 

 massive ; of a chestnut-red colour, polished and shining, the 

 mandibles black, the antennae and legs yellowish red ; the sculp- 

 ture is more feeble, and the medial longitudinal furrow less deeply 

 impressed. Head proportionately much longer, with no central 

 ocellus on the front ; pedicel with the 1st node above narrower, 

 more conical, and not emarginate above, the keel below less 

 strongly marked. 



7 min. Resembles the "If. max. ; mandibles strongly dentate 

 along the masticatory margin, broad and triangular. Thorax very 

 wide and convex anteriorly, compressed and narrow posteriorly. 

 Pedicel with the nodes smaller in every way; abdomen broadly 

 oval. 



As in P. diversus, the I/ max. and If. min. are linked by forms 

 intermediate in size and sculpture. 



. Light brownish yellow, highly polished, smooth and shin- 

 ing ; for the rest resembling the $ of P. diversus, but markedly 

 smaller and slighter in every way. 



2 . Resembles the I/ max. closely, and is a much more slenderly 

 built insect than P. diversus 2 . Bright chestnut-red, the antennae 

 and legs slightly paler. Head about as broad as long without the 

 mandibles, quadrate, the occiput very slightly emarginate, some- 



