476 bulletin: museum of compakative zoology. 



200. Camponotus (Myrmoturba) mclanoticus Emery var. substitutus 



Emery. 



Numerous workers were found at Natal, Independencia, and in the 

 Maranguape Mountains. The species nests beneath stones. 



201. Camponotus {Myrmothrix) nifipcs (Fabricius). 



The typical form of this species was common, nesting in logs and 

 beneath bark, at Ceara-Mirim, Para, and Porto Velho. 



202. Camponotus {Myrmothrix) abdominalis (Fabricius). 



Very common at Natal, Ceara-lSIirira, Baixa Verde, Para, and 

 Madeira-Mamore Camps 39 and 46. 



. 203. Camponotus (Mynnothrix) abdominalis var. atriceps F. Smith. 

 A single colony was taken at Abuna, Bolivia. 



204. Camponotus {Myrmothrix) rapax (Fabricius). 

 Plate 5, fig. 38. 



Worker major. (Plate 5, fig. 38). Length 12 mm. 



Head one and a third times longer than broad, narrowed in front, 

 posterior angles narrowly rounded, occipital border narrowly and 

 rather deeply concave; the sides straight and subparallel until a little 

 in front of middle, then convergent. Mandibles large, elongate, with 

 six teeth on the blade. Clypeus a little broader than long, attaining 

 side margin of head, strongly carinate, the anterior border of middle 

 convex. Frontal area distinct, quadrangular. Frontal earinae evenly 

 curved from base to end, which is opposite the middle of eye. Eyes 

 small, rather flat. Antennae slender, the scapes bent at middle, 

 extending three eighths their length beyond the occipital corners; 

 funicular joints long and cylindrical, gradually decreasing in length 

 apically. Pronotum broader than long, rounded at sides and above, 

 in front finely margined. Mesonotum slightly longer than broad, nar- 

 rowed behind, the base slightly less than twice the breadth of posterior 

 portion. Epinotum at base divided by a distinct transverse suture; 

 evenly rounded in profile; narrow above, three times as long as liroad. 



