COLLECTED AT BACHIAN, KAISAA, ETC. Ill 



4. PoDOMYRMA SIMILLIMA. P. fusco-femiginea ; abdominis basi 

 pallide testacea; femoribus medio valde incrassatis, basi tenuissimis. 



Worker. Length 3i lines. Ferruginous ; the head and thorax with 

 coarse longitudinal grooves or striae, those at the sides of the head 

 punctured; the scape in front, the anterior tibise in front, and the 

 intermediate and posterior tibiae at their base in front pale ferrugi- 

 nous ; the articulations of the legs and the ai)ical joints of the tarsi 

 bright ferruginous. The lateral margins of the thorax above raised ; 

 the anterior margin rounded, with the angles produced into short 

 acute spines. Abdomen shining, the basal half pale testaceous, and 

 very delicately longitudinally aciculate ; the first node of the peduncle 

 oblong, with a minute tooth at its base above, the second subovate. 



Hub. Bachian. 



This species very closely resembles P. hasalis from Ai'u ; it differs only 

 in being larger, in having the legs dark, and the abdomen of a much more 

 oblong form : it is probably a mere climatal variety. 



Gen. Pheidole, Westio. 



1. Pheidole notabilis. P. rufo-ferruginea ; capite maximo, in 

 medio sulcato et punctato; metathorace spinis duabus acutis armato. 



Worker major. Length 2 lines. Dark ferruginous ; the head at least six 

 times the size of the abdomen, subquadrate, with the angles rounded, 

 strongly but not closely punctured, divided in the middle by a 

 deeply-impressed longitudinal line ; the mandibles very stout, curved, 

 and edentate. The thorax hidden beneath the head ; the metathorax 

 with two acute long spines. Abdomen ovate, of a darker colour than 

 the head. 

 Worker minor. Of the same colour as the worker major ; the head of 

 the ordinaiy size, and covered, as well as the thorax, with large semi- 

 confluent punctures. The thorax armed with two long straight spines 

 in front, and two curved ones on the metathorax. Abdomen rather 

 narrower than the head, and very smooth and shining. 

 Hab. Bachian. 



This is a most remarkable species ; several are known to have workers 

 with largely developed heads, but this surpasses every species, in that par- 

 ticiUar, with which I am acquainted ; neither the large nor small workers 

 have toothed mandibles ; we have given a figure of each kind of worker. 

 (Plate I. figs. 3, 4.) 



2. Pheidole rubra. P. rufo-ferruginea; capite maximo, longi- 

 tudinaliter aciculato ; antennis pedibusque pallide testaceis. 



Worker major. Length 2 lines. Rufo-ferruginous, with the legs and 

 antenna? pale testaceous; the head wider than the abdomen, longi- 

 tudinally aciculate, the vertex transversely so; the eyes small and 

 placed forward at the sides ; the mandibles stout, with acute teeth on 

 their inner margin ; the club of the antenna; three-jointed. Thorax 



