Dec, igio.] Wheeler: North Aisierican Camponotus. 229 



posterior border of the second gastric segment is black ; in another only the 

 base of the second segment is yellow. Wings very faintly tinged with yellow, 

 with dilute yellow veins and stigma. 



Described from specimens taken in the following localities : 

 Texas: Victoria, in twig galls on burr oak (J. D. Mitchell) ; 

 Dallas (Schwarz, Pratt and Hunter) ; Calvert (C. R. Jones) ; Liberty 

 (E. S. Tucker) ; Austin, running on the bark of Salix nigra 

 (Wheeler). 



Louisiana: Logansport, on Cratccgus (E. S. Tucker). 

 Florida: Jacksonville and Atlantic Beach (Mrs. A. T. Slosson). 

 While this variety is easily distinguished from rasilis by its 

 smaller size and in having the base of the gaster yellow in the female 

 and workers, there is nevertheless considerable variation in the latter 

 character. The ergatotypes from Victoria, Texas, and the gynetype 

 from Calvert, Texas, have the two first gastric segments entirely 

 yellow. A series of workers from Austin has only the base of 

 the first segment yellow. The specimen from Atlantic Beach, Fla., a 

 female, is much larger than the type and measures 9.5 mm. It has 

 a black margin to the first gastric segment and the second is reddish 

 only at the base. This specimen may, therefore, be regarded as repre- 

 senting a transition to the true rasilis. 

 8. C. fallax subbarbatus Emery. 



C. marginatus subsp. subbarbatus Emery, Zool. Jahrb. Abth. f. Syst., VII, 

 1893, p. 676, ?$c?. 



Worker major. — Length 6-6.5 nim- 



Head and thorax finely and densely punctate and more opaque than in 

 any of the preceding forms. Gaster superficially shagreened and shining. 

 Cheeks with a few elongate foveolse each bearing a short, stiff hair. Clypeus 

 with few or no foveolse. Head and thorax dirty, brownish yellow, pleura; and 

 posterior portions of head and thorax somewhat darker and more ferruginous. 

 Gaster black or dark brown ; first and second segments each with a very broad 

 transverse broad band. In some specimens the first segment is yellowish or 

 brownish throughout. 



Worker minor. — Length 3.5-6 mm. 



Coloration and sculpture as in the worker major. Piligerous foveolse of 

 the cheeks very few and indistinct. 



Female. — Length 8-9 mm. 



Head and thorax varying from reddish-brown to blackish. A large antero- 

 median and two elongate parapsidal blotches on the mesonotum, the meso- 

 and metapleurse, scutellum and epinotum blackish. Petiole and gaster black 

 or dark brown, the latter with the anterior and posterior margins of the three 



