310 ANNALS NEW YORK ACADEMY OF SCIENCES 



Worke7- major and media. 



"Both in habitus and structure of the head and clypeus this subspecies bears 

 the greatest resemblance to maccooki Forel, but differs from this form in its 

 feebler sculpture ; the whole head is therefore more shining in the worker 

 major (hardly less shining than in the typical castaneus). The scattered 

 punctures on the sides of the head are smaller and less numerous. The anten- 

 nal scape is more slender, longer and neither flattened nor dilated at the base. 

 The color of the three specimens before me (one major and two media 

 workers) is clay-yellow; head, antennal scape, first funicular joint, knees, 

 tibiae and first tarsal joint black, remainder of tarsi and funiculus brown ; in 

 the large worker the thorax is darker, pro- and mesonotum piceous brown ; 

 tip of gaster blackish. Epinotum, even in the large workers, with its basal 

 surface nearly twice as long as the declivity ; in this respect differing from 

 the subsp. maccooki and vicinus, which have a much higher epinotum. 



"Length of worker major, 12 mm. ; head, 3.5 x 3.2 mm. ; scape, 3.4 mm. ; hind 

 tibia, 4 mm. 



"Panamint Mts., California, from Mr. Pergande." (Emery.) 



Pergande records this form also from San Luis and San Esteban, 

 Mexico. 



I have not seen the worker forms, but I have before me five deiilated 

 specimens which I take to represent the female of this subspecies. Four 

 of these are from Palmerlee, Arizona, 6000 ft., (C. E. Biederman) and 

 one from the Huachuca Mts. in the same territory (Dr. H. Skinner). 

 They vary from 14—16 mm. in length. The structure of the antennas 

 and the coloration of the legs and gaster are as described for the worker, 

 the thorax is brown, with the pro-, meso- and metanotum and scutellum 

 either entirely black or spotted with dark brown. The posterior portion 

 of the head is subopaque and densely shagreened, the remainder of the 

 body very smooth and shining. The clypeus is like that of maccool-i, the 

 lobe of the anterior border being very short, the carina distinct. There 

 are several large punctures or foveolse on the clypeus and also on the 

 cheeks where they are somewhat elongated. Pilosity sparse, absent on 

 the cheeks. Pubescence very short and dilute. The middle and hind 

 tibise are somewhat triangular in cross-section and grooved on their 

 anterior surfaces, and the series of graduated bristles extends along 

 nearly the whole length of their flexor surfaces. 



13. C. maculatus tortuganus Emery 



C. maculatus suhsit. tortuganus Emery, Zool. Jahrb. Abth. f. Syst, VIII. p. 

 336, ^, 1894. 



Worker major. Length, 9-11 mm. ; head, 2.6 x 2.3 mm. ; scape. 2.2 mm. ; 

 hind tibia, 2.8 mm. 



Head rather long and narrow, with very feebly convex sides. Eyes large, 

 moderately convex. Mandibles 7-toothed. Clypeus strongly carlnate. the lobe 



