OF CERAM, CELEBES, TERNATE, AND GILOLO. 49 
teeth at their apex; the head very large, longitudinally striated, and 
with a longitudinal channel behind the scape of the antennx 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 antennz, thorax, 
and legs pale testaceous; the head of the ordinary size; entirely 
smooth and shining. 
Hab, Menado. 
Gen. Purtpont, Westw. 
1. Pheidole megacephala, Smith, Proc. Linn. Soc. Supp. vy. 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 eall 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 slaye-making 
communities, and also in the remarkable genus ezton, 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. Typuiatra, Smith. 
1. Typhlatta leviceps, 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 Hciton, one or two species 
of which are also blind; the present species is very like the Eciton pachy- 
cerus of my Catalogue of Formicide, which isalso 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. CRYPTOCERIDA, Smith. 
Gen. CATAULACUS. 
1, CATAULACUS FLAGITIOSUS. C, niger; capite striato, angulis posticis 
LINN. PROC.—ZOOLOGY. 4 
