376 



$ . Similar to the maj. node of pedicel proportionately 

 not so thick ; wings fusco-hyaline. 



Length, g maj. 11-12; min. 5-6; $ 13-14 mm. 



Hob. Sikhim (Matter) ; Kumaun, 4000 ft., Assam (Smythies) ; 

 Burma, Maymyo, 3000 ft. ; Karen Hills, 5000 ft. (Bingham). 



It is remarkable that all specimens from Burma should have the 

 thorax and basal abdominal segment either entirely bright red or 

 variegated with bright red. In sculpture and form they are 

 identical with specimens from Sikhim and Assam. Emery (loc. cit.) 

 has separated the Burmese variety as var. mutilloides. 



443. Camponotus sericeus, Fabr. (Formica) Ent. Syst. Suppl. (1798), 



p. 279 ; Ford, Journ. Bomb. N. H. Soc. vii (1892), pp. 223 & 



231, . 

 Formica cinerascens, Jerd. Madr. Jour. Lit. Sf Sc. xvii (1851), 



p. 123, S$rf. 



Formica obtusa, Smith, Cat. vi (1858), p. 30. 

 Camponotus opaciventris, Mayr, Verh. zool.-bot. Ges. Wien, xxviii 



(1878), p. 648, . 



$ maj. Black, opaque, with a granular appearance on the head 

 and thorax, antenna? and the tibia? and tarsi of the legs more or 



Fig. 121. Camponotus sericeus, <J$ ma j- 



less dark castaneous ; head, thorax and node of pedicel with very 

 sparse erect pubescence ; abdomen with a dense recumbent silky 

 golden pubescence hiding the sculpture. Head very broad and 

 massive, almost as broad across at the base of the mandibles as at 

 the occiput, the latter more or less emarginate ; mandibles with 

 5 teeth ; clypeus broad, somewhat tectiform, the anterior border 

 broadly emarginate in the middle. Thorax broad in front, strongly 

 compressed posteriorly, emarginate at the meso-metanotal suture, 

 the basal face of the metanotum horizontal, flat, the sides margined, 

 posterior face excavate; legs stout, tibia? cylindrical. IS'ode of 

 pedicel rounded, knob-like ; abdomen very broad, globose. 



$ min. Similar, smaller ; head more elongate proportionately, 

 occiput rounded, anterior margin of clypeus transverse, antenna? 

 and legs lighter in colour than in the major. 



$ . Similar to the > maj. ; head rounder, occiput transverse, 

 thorax not compressed, and the metathorax as in the $ of typical 

 Camponotus. Node of pedicel thick but transverse, not globose ; 

 abdomen long and massive. 



