1903.] NATURAL SCIENXES OF PHILADELPHIA. 245 



and abdomen ; erect and shorter on head and thorax ; longer and slightly 

 reclinate on the pedicel and gaster; hairs on sides of head, legs and an- 

 tennse minute, non-clavate, appressed. 



Yellow, in some specimens crown of head, antennal club and dorsum 

 of gaster slightly infuscated. 



Type locaUty: American Fork Caiion, Utah (Pergande). 



Additional locaUties: Pacific Grove, Cal. (Dr. H. Heath); Canon 

 City, Colo. (Rev. P. J. Schmitt, O.S.B.). 



Emery described the species from a single specimen in which the 

 thorax was shining. Examination of a number of California and 

 Colorado specimens from the same nests shows this to be a common 

 but by no means constant character; in a great many individuals the 

 thorax is uniformly opaque throughout. 



One of the colonies sent me by Dr. Heath was found in the ground, 

 hibernating in a Termite burrow. 



lla. Var. Heathii van nov. 



Worker. — Differs from the preceding in the coloration, which is 

 constant in a whole colony sent me by Dr. Harold Heath from Pacific 

 Grove, Cal. The body is brown, often rather dark, the legs and an- 

 tennae brownish-white without the distinct yellow cast of the typical 

 form. 



Found nesting in the ground under a stone. 



lib. Subsp. occidentalis subsp. nov. 



Worker. — This form combines the color characters of the type and 

 the preceding variety. The ground color is yellow, the upper surface 

 of the head, thorax and pedicel brown; the first gastric segment with 

 a broad, brown dorsal band across its posterior half or two-thirds. 

 Thorax and pedicel decidedly opaque. Antennal scape nearly reach- 

 ing the posterior angle of the head, epinotal spines decidedly more 

 robust than in the typical nitens and the var. Heathii. 



Type locahty: Friday Harbor, Wash. 



Described from six specimens received from Prof. Trevor Kincaid, 



12. Leptothorax texanus sp. nov. 



Worker (PL XII, fig. 16).— Length 2.25-2.75 mm. 



Head longer than broad. Eyes rather large. Mandibles 5-toothed. 

 Clypeus moderately convex, its anterior border somewhat rounded. 

 Antenna 12- jointed; scape reaching nearly to the posterior angle 

 of the head ; funiculus terminating in a very distinct 3-jointed 

 club, the last joint of which is somewhat longer than the two 

 preceding joints; first funicular joint nearly as long as joints 2-5; 



