136 bulletin: museum of comparative zoology. 



tips, directed backward, upward, and outward. Petiole in profile with straight, 

 not angulate, anterior and slightly convex posterior surface, armed above with 

 a pair of stout spines, longer and stouter than those of the epinotum, constricted 

 at the base and distinctly swollen in the middle, curved and tapering, directed 

 outward and backward around the base of the gaster. The distance between 

 their tips is a little less than the greatest diameter of the gaster, which is sub- 

 globose, distinctly broader than long, with | of its surface formed by the first 

 segment. Legs moderately long, tibiae cylindrical, strongly constricted at 

 their bases, without bristles on their flexor surfaces. 



Head, thorax, petiole, and legs subopaque; mandibles very finely striated 

 and sparsely punctate; head, thorax, and petiole densely and* uniformly 

 punctate, thoracic dorsum also with scattered, shallower punctures; epinotal 

 and petiolar spines longitudinally rugulose. Gaster shining, more finely and 

 more superficially punctate than the head and thorax. Legs finely and sharply 

 shagreened. 



Hairs and pubescence whitish, the former only on the venter, tip of gaster, 

 clypeus, and mandibles, the latter very fine, distinct only on the gaster, which 

 has a slightly pruinose appearance. 



Black; head, thorax, and petiole with indistinct purplish metallic reflections, 

 more greenish on the occiput. Palpi, tibiae, femora, and middle and hind 

 coxae red, tips of femora and constricted bases of the tibiae more or less 

 infuscated. 



Described from a single specimen taken by Mr. John Hewitt at 

 Kuching. 



This species, though closely related to P. hippomanes, paromalus, 

 mucronata, and atrovirens, is easily distinguished by the robust, some- 

 what fusiform epinotal spines. It is perhaps merely a subspecies of 

 hippovianes, although the petiole does not agree with Smith's figure 

 of the type from Celebes. It is certainly very different from the subsp. 

 ceylonensis Emery, represented in my collection by a couple of speci- 

 mens received from Professor Forel. 



23L PoLYRHACHis (Cyrtomyrma) rastellata (Latreille). 



Formica rastellata Latreille, Hist. nat. fourmis, 1802, p. 130, 9 . 

 Polyrhachis rastellata Smith, Cat. Hymenop. Brit, mus., 1858, 6, p. 59. 



Type-locality: East Indies (Riche). 

 Sarawak (Doria and Beccari). 



