114 Psyche tSepl - 
Type locality. — Devil’s Gate Dam, Pasadena, Califor- 
nia. 
Described from a holotype and 15 paratype workers 
collected by Arnold Mallis and Jack Schwartz at the type 
locality indicated above. Six of the specimens including 
the holotype are labeled 2-20-38, no. 1 and the remainder 
2-26-38, no. 2. No information on their biology is avail- 
able. The holotype and some of the paratype workers 
are in the United States National Museum collection 
under U. S. N. M. No. 59152. 
The paratypes differ from the holotype especially in 
size, color and the degree of sculpturing. The largest 
paratype is 3.4 mm., the smallest 2.8 mm. Some specimens 
have the body a more uniform brown than others ; in most 
specimens, however, the head is darker than the remain- 
der of the body. The sculpturing on the head and thorax 
varies considerably with regard to coarseness and abun- 
dance but in general is of a similar nature. 
Leptothorax gallce appears to be related to nevadensis 
rudis Wheeler from which it especially differs in its more 
slender thorax, with more rounded humeri and less flat- 
tened dorsum; petiolar node, in profile, more sharply 
angular ; postpetiolar node, from above, longer in propor- 
tion to its breadth; head darker, and usually with less 
satiny luster or shine. So far as I am aware, gallce nests 
in trees, especially in galls that occur on trees, whereas 
nevadensis rudis has only been reported nesting in the 
soil beneath stones. Further collecting however, may 
prove that neither species is confined to the habitat indi- 
cated by observations thus far recorded. 
Other localities in California where this ant has been 
collected : 
Arroyo Seco in Pasadena ; 2-6-37; Arnold Mallis and 
Jack Schwartz. Camp Baldy in Los Angeles County; 
9-6-18; L. H. Weld; on Quercus chrysolepis Liebm., the 
canyon live oak; Hopkins U. S. No. 15611 b. Mill Valley, 
Marin County ; Mch. 1947, Wilda S. Boss. 
Los Gatos in Santa Clara County ; different dates dur- 
ing 1918 and 1919; R. D. Hartman; on Quercus chryso- 
lepis Liebm., the canyon live oak; Hopkins U. S. No. 
15922 e, h. 
