WHEELER, NORTH AMERICAN ANTS 325 



II. Ahdominalis Group 



23. Camponotus floridanus Buckley 



Formica floridana Buckley, Proc. Ent. Soc. Phila., VII. p. IGl. ^. 1866. 



Camponotus atriceps stirps Yankee Forel, Bull. Soc. Vaud. Sci. Nat, (2) 

 XX, p. 340, ^ , 1884. 



C. atriceps var. floriclanus Mayk, Verb. Zool. bot. ges. Wieu, XXXVI, p. 423, 

 ^ 5 5,1886. 



C. floridanus Dalia Tokre, Catalog. Hymen., VII, p. 231, 1893. 



C. ahdominalis subsp. floridanus Emery, Zool. Jabrb. Abtb. f. Syst.. VII, p. 

 €70, 1893. 



Worker major. Lengtb, 8-10 mm. ; head, 3.5 x 3.4 mm. ; scape, 2.7 mm. ; 

 bind tibia, 3 mm. 



Head large, nearly as broad as long, broader behind than in front, with 

 broadly excised posterior and convex lateral margins. Eyes flattened. Man- 

 dibles 5- to 6-toothed. Antennee short, scapes flattened at the base but not 

 dilated, enlarged towards their tips, which do not extend beyond the posterior 

 corners of the head. Clypeus carinate, its border produced as a prominent lobe 

 with sharp corners, between which the median edge is angularly excised. 

 Frontal carinje lyate, rather far apart ; frontal area small, triangular ; frontal 

 groove distinct. Thorax robust, narrower than the head in front, compressed 

 and more narrowed in the pleural region ; in profile rather unevenly arched, 

 with deep pro-mesonotal suture, highest in the mesonotal region ; epinotum de- 

 pressed, sloping, with indistinct and subequal base and declivity. Petiole in 

 profile cuneate, with similar, feebly convex anterior and posterior surfaces ; 

 seen from behind, evenly rounded above, with rather blunt border. Legs 

 moderately long and robust ; middle and hind tibite neither compressed nor 

 sulcate, elliptical in cross section. 



Mandibles opaque, very finely striated and sparsely punctate ; teeth smooth 

 and shining. Head opaque, very densely and minutely punctate or shagreened. 

 Cheeks with small, scattered foveolse ; clypeus and lateral borders of front 

 with a few large piligerous foveolse. Thorax, ga.ster and legs moderately shin- 

 ing, more superficially shagreened. 



Hairs coarse, long, fulvous, erect, rather abundant, shorter on the anterior 

 surface of the antenna 1 scapes and on the legs, absent on the cheeks and sides 

 of the head, very short on the mandibles and clypeal border. Pubescence very 

 short and dilute, distinct only on the gaster. 



Head ferruginous red ; mandibles, antennal scapes and anterior border of 

 cheeks and clypeus darker. Thorax and legs more yellowish red. Gaster 

 black, with the posterior edges of the segments narrowly yellow. 



Worker minor. Length, 5.5-7 mm. 



Head, excluding the mandibles, about twice as long as broad, with straight, 

 parallel sides and short evenly rounded postocular portion. Eyes rather large 

 and convex. Clypeus like that of the worker major. Auteunfe slender, scapes 

 not flattened at the base, reaching about half their length beyond the posterior 

 corners of the head. Thorax low, narrow and evenly arcuate above, epinotum 

 without distinct base and declivity. Petiole like that of the worker major. 



