WHEELER, NORTH AMERICAN ANTS 321 



6-tootbed. Clypeus not carinate, its anterior border produced as in the 

 worlser major and with rounded corners mesial to ttie excisions. Thoi'ax 

 finely reticulate-rugulose, above moderately shining. Petiole moderately thick, 

 with rounded upper border. Gaster very finely transversely rugulose. 



Male. Length, 9 mm. 



Head longer than broad ; rounded behind ; cheeks subparallel, concave, as 

 long as the eyes. Clypeus convex, scarcely carinate, with rounded anterior 

 border. Mandibles edentate. Eyes rather small. Anteunoe slender, scapes not 

 flattened at the base, first funicular joint very feebly incrassated, as long as 

 the second. Thorax robust, epinotum rounded, sloping, with subequal base 

 and declivity. Petiole low and thick, upper border sharp, distinctly excised 

 in the middle. Gaster small ; legs and antenute long and slender. 



Surface of body shining ; head and thorax more coarsely, gaster much more 

 finely and superficially shagreened. Mandibles subopaque, finely punctate. 



Pilosity similar to that of the worker, but erect hairs absent on thorax, on 

 legs much shorter and appressed. 



Chestnut brown ; anterior portion of head, antennae, legs, articulations of 

 thorax and edges of gastric segments yellowish brown. Wings faintly suffused 

 with yellow ; veins and stigma pale yellow. 



This species, originally described from Brazil, enters the United States 

 only in southern Florida. The description is drawn from several workers 

 and two males, some of which were taken by the late Eev. Jerome Schmitt 

 at Sanford, while others are labeled simply Florida and belong to the 

 American Museum of Natural History. Forel redescribed the worker 

 from specimens taken at Green Cove Spring by Mrs. Mary Treat. Both 

 Mayr and Emery saw specimens from Florida. The description of the 

 female is translated from Mayr. 



21. C. castaneus Latrelle 



Formica castanea Latreille, Hist. Nat. Fourm., p. 118, PI. Ill, Figs. 11, 12 

 A. C. and D., ^ 9 5 , 1802. 



Formica mellea Say, Bost. Journ. Nat. Hist, I, .3, p. 286, $, 1836; Leconte, 

 Writings of Thos. Say, II, p. 731, $, 1859. 



Cawponotus melleits Mayr, Sitzb. Akad. Wiss. Wien, LIII, p. 485, ^ $ $ , 

 1866 ; FoREL. Bull. Soc. Vaud. Sci. Nat., XVI, P. 81, p. 60, ^ $ $, 1879. 



C. castaneus Mayr, Verb. zool. hot Ges. Wien, XXXVI. p. 420, ^ $ 5, 1886; 

 FoREL, Ann. Soc. Ent. Belg., XXX, p. 141, 1886 ; Dalla Torre, Catalog. Hymen., 

 VII, p. 224, 1893; Emery, Zool. Jahrb. Abth. f. Syst., VII, p. 673, 1893; 

 Wheeler. Bull. Amer. Mus. Nat. Hist., XXI, p. 402, 1905 ; Occas. Papers Bost. 

 Soc. Nat. Hist., VII, 7, p. 22. 1906. 



Warier major. Length, 9-10 mm. ; head, 3.2 x 2.8 mm. ; scape, 3 mm. ; hind 

 tibia, .3.4 mm. 



Head small, but little broader behind than in front, with rounded sides and 

 feebly excised posterior border. Eyes somewhat convex. Mandibles 6- to 7- 

 toothed. Clypeus convex in the middle, ecarinate or bluntly and indistinctly 



