wheeler: ants of the genus formica. 439 



more abundant on the gula, short and appressed on the extensor sur- 

 faces of the tibiae. Eyes hairy. 



Light yellowish red; mandibles, legs, and antennae darker, femora 

 more brownish; gaster dark brown, with yellowish anal region. 

 Small workers sometimes have the top of the head and thorax spotted 

 with pale brown. 



Female. Length 8 mm. 



Head, excluding the mandibles, as broad as long, with very straight 

 posterior and lateral borders, the latter strongly converging anteriorly; 

 posterior corners of head rather sharp. Antennal scapes reaching 

 about twice their greatest diameter beyond the posterior corners. 



Sculpture, pilosity, and color as in the worker. Petiole, thoracic 

 dorsum, and base of gaster with a number of pale, erect hairs; pubes- 

 cence on the head and thorax even longer and more conspicuous than 

 in the worker. Gaster not shining. Mesonotum with three elongate 

 fuscous spots; funiculus, except its base, the metanotum, and pos- 

 terior portion of scutellum, blackish. Wings opaque gray, with brown 

 veins and stigma. 



Host (Temporary). Unknown. 



Type locality. — California: Coastal mountains. 



California: San Gabriel Mountains near Claremont (C. F. Baker); 

 Felton, Santa Cruz Mountains 300-500 ft. ; Santa Cruz Beach, 

 Giant Forest (J. C. Bradley); Loma Prieta, Santa Cruz Mountains 

 3,800 ft. (V. L. Kellogg); king's River Canyon (H. Heath); Corte 

 Madera Creek (W. M. Mann); Pine Lake (J. D. Johnson). 



I have redescribed the worker of this form from cotype specimens 

 given me by Mr. Pergande. Although, as Emery states, it is allied 

 to intcgra, it is not a variety of obscuriventris, as he believed. He 

 records it from California and Nebraska, but I have seen the form 

 only from the coastal mountains of the former state and regard this 

 as the type locality. It is replaced to the eastward in the Rocky 

 Mountains by the two closely allied varieties described below, which 

 differ from it mainly in pilosity. 



According to a statement {in littcris) of Prof. Harold Heath, F. 

 intcgroides inhabits open woods and accumulates large quantities 

 of vegetable detritus about the stumps and logs in which it nests. 

 In these particulars its habits are very similar to those of the European 

 truncicola and our eastern subsp. Integra. 



