3S 



ME. F. SMITH OX HYMEXOPTEROUS INSECTS 



pale pubescence. Abdomen thinly sprinkled with pale hairs ; the 

 scale of the peduncle rounded and blunt above, not much elevated. 

 Hab. Gilolo. 



/. Formica virulens. F. capite, thorace pedibusque rufo-ferrugi- 

 neis ; abdomine nigro ; squama oblongo-ovata. 



Worker. Length 4 lines. Head, antennas, thorax, and legs rufo-ferru- 

 ginous ; the head very large, much wider than the abdomen, emargi- 

 nate behind, and rounding at the sides to the tips of the mandibles ; 

 the latter triangular, stout, and longitudinally striated, their inner 

 margin dentate. The thorax compressed behind. Abdomen shining, 

 black, with the margins of the segments ciliated with pale hairs ; the 

 scale of the petiole oblong-ovate. 



Hab. Celebes (Tondano). 



8. Formica (Tapinoma) gibba. F. castaneo-rufa ; antennis, tibiis 

 tarsisque fuscis; metathorace supra rotundato, postice truncate 



Worker. Length If line. Dull chestnut red ; the head rounded be- 

 hind the eyes, the latter ovate, and situated rather more inwards than 

 is usual, the eyes are also rather large ; the antennas, tibiae, and tarsi 

 fuscous ; the antennae inserted rather wide apart, nearly in a line with 

 the inner margins of the eyes. Thorax, sub-rugose above, narrowed 

 posteriorly, and deeply constricted between the meso- and meta- 

 thorax ; the latter elevated, rounded above, and truncate behind, the 

 truncation obliquely concave. Abdomen ovate, produced anteriorly 

 over the node of the peduncle, which is oblique, and falls into the 

 truncation of the metathorax. 



Hab. Celebes (Tondano). » 



This species belongs to Foerster's genus Tapinoma. 



f). Formica (Tapinoma) albipes. F. nigra, subnitida, glabra; me- 

 tatborace dorso abbreviato ; squama oblongo-dcpressa ; pedum articulis 

 tarsisque albis. 



Worker. Length 1£ line. Black, slightly shining; the antennae in- 

 letted widely apart on the front of the head; the metathorax oblique 

 behind ; the scale of the peduncle decumbent and hidden beneath the 

 base of the abdomen, which projects forwards; the tarsi white. 



Hab. Celebes (Tondano). 



Gen. PoLYRHAciiis, Smith** 



1. Polyrhachis bastatus, Latr. Hist, Nat. Fourm.\). 129, pi. 4. fig. 23, 

 Hab. Celebes; India. 



The specimen from Celebes bai the metathoracic spines shorter than 

 Indian ipecimeni which I hate seen, and those on t he node of the peduncle 

 are also rather shorter; however, in its opake blaekness and in every other 

 particular the insect is identical. 



* A figure of the ncale of the peduncle of each of the new species dewcribed 

 w ill be found on l'late I., illustrative of thin paper. 



