312 ANNALS NEW YORK ACADEMY OF SCIENCES 



jecting anterior border. Mandibles narrow, edentate. Antennae slender, first 

 funicular joint as long as the second, distinctly incrassated. Thorax robust, 

 with low, evenly rounded epiuotum ; its base and declivity indistinctly differ- 

 entiated, the former about twice as long as the latter. Petiole longer than 

 high, with a low, thick, transverse node. Gaster and legs slender. 



Head and thorax subopaque or somewhat shining, especially the pleurae and 

 the front of the head, very minutely and indistinctly shagreened ; gaster 

 shining. 



Hairs yellow, erect, rather long and abundant on the head and gaster, 

 petiole and epinotum, sparse on the remainder of the thorax. Legs and 

 antennae naked. Pubescence rather long on the gaster, but inconspicuous or 

 absent elsewhere. 



Head yellowish brown beneath and behind, with a large dark brown or 

 black spot on the vertex. Antennae, thorax, petiole and legs brown ; gaster 

 dark brown or blackish, with paler posterior margins to the segments ; mouth- 

 parts and genitalia yellowish. Wings dull whitish, with pale yellow veins and 

 stigma. 



Described from a long series of specimens of all four phases belonging 

 to a single colony taken by myself at Miami, Florida. I have also taken 

 this subspecies at Planter on Key Largo, and have specimens from Lake 

 Worth (Jerome Schmitt) in the same State. Emery based the subspecies 

 on a single worker from the Dry Tortugas. This he supposed to be a 

 worker media, but it was undoubtedly a worker major (maxima), since 

 this has a smaller head than our other Camponoti of the maculatus 

 group. C. tortuganus is closely related to the subsp. lucayanus Wheeler 

 from the Bahamas, to C. vafer and C. fumidus var. festinatiis. but all of 

 these forms have erect hairs on the antennal scapes. 



14. C. fumidus Roger var. festinatus Buckley 



Formica festinata Buckley, Proc. Ent. Soc. Phila., VI, p. 164. ^ 9 , 1866. 



Camponotus festinatus Dalla Torre, Catalog. Hymen.. VII. p. 231, 1893. 



C. fumidus var. pubicornis Emery, Zool. .lahrb. Abth. f. Syst., VII, p. 670, », 

 1893. 



C. fumidus var. festinatus Wheeleb, Trans. Tex. Acad. Sci., IV, II, No. 2, 

 p. 22, 1902. 



Worker major. Length, 8-10 mm. ; head, 3 x 2.6 mm. ; scape, 2.6 mm. ; hind 

 tibia, 3 mm. 



Head rather small, longer than broad, broader behind than in front, with 

 feebly excised posterior border and rather convex sides. Eyes slightly convex. 

 Mandibles 7-toothed. Clypeus carinate, moderately produced in front as a 

 broad flap-shaped lobe, rounded at the sides and slightly sinuate in the middle. 

 Antennal scapes rather long, reaching about one-quarter their length beyond 

 the posterior corners of the head, terete at the base, neither flattened nor 

 dilated. Thorax slender, evenly arched above ; base of epinotum fully twice as 

 long as the sloping declivity. Petiole with convex anterior and flattened 



