OF CEEAM, CELEBES, TE TIN ATE, AND GILOLO. 



teeth at their apex ; the head very large, longitudinally striated, and 

 with a longitudinal channel behind the scape of the antenna? appa- 

 rently for their reception; the eyes small, inserted forwards at the 

 sides of the head. The metathorax, with two minute spines ; the legs 

 pale rufo-testaceous. Abdomen fuscous, smooth and shining. 



Worker minor. Length 1 line. Rufo-testaceous, the antennae, thorax, 

 and legs pale testaceous ; the head of the ordinary size ; entirely 

 smooth and shining. 



Hab. Menado. 



Gen. Pheidole, Westw. 



1. Pheidole megacephala, Smith, Proc. Linn. Soc, Supp. v. 112. 5. 

 Mr. Wallace has sent a series of workers of this species collected from 



the nest. These contain, as it were, three modifications of the enormously 

 large-headed individuals ; all of these have heads similar in form, subqua- 

 drate, longitudinally striated anteriorly, and transversely so behind ; these 

 I should call varieties of the worker major ; the worker minor has the head 

 subovate in form, smooth, polished and shining ; not striated behind, and 

 very faintly so anteriorly. The links which would unite these two distinct 

 forms of the working ants are wanting. I am therefore still of opinion 

 that societies of ants generally possess two distinct sets of workers whose 

 functions are totally different ; this is known to be the case in slave-making 

 communities, and also in the remarkable genus Eciton, of which only the 

 workers are known. 



2. Pheidole plagiaria (Smith, Proc. Linn. Soc. Supp. v, 112. 3). 

 Hab. Celebes; Bachian. 



The specimens from Celebes are of a darker hue than those received 

 from Bachian ; this is the ant which Mr. Wallace saw carrying off white 

 ants to its formicarium. 



Gen. Typhlatta, Smith. 



1. Typhlatta lseviceps, Smith, Proc. Linn. Soc. ii. 79. 1. 



This remarkable genus of ants, the workers of which are destitute of 

 eyes, is in my opinion closely allied to the genus Eciton, one or two species 

 of which are also blind ; the present species is very like the Eciton pachy- 

 cerus of my Catalogue of Formicidae, which is also blind. That species was 

 collected by General Hardwick, and formed part of his collection, which he 

 presented to the British Museum ; T have little doubt it was captured in 

 India, although South America (?) is given as its probable habitat. This 

 genus differs from Eciton in having only two joints to the labral palpi; the 

 maxillary palpi I have not succeeded in extracting. 



Fam. CKYPTO CEBITS, Smith. 

 Gen. Cataulacus. 



1. Cataulacus flagitiosus. C. niger; capite striato, angulis posticis 

 LINN. PfiOC. — ZOOLOGY. 4» 



