30 Psyche [February 



Leptothorax andrei Em. Very small colonies are not rare. 

 Those found were either associated with Formica rufibarbis var. 

 occidentaUs Wheeler, or independent. 



Stenamma andrei. Common in dry localities. In March 

 and April Ischnoptera sp. is abundant in the nests. Myrme- 

 cophila formicarum is common also. On March 5, 1 took a single 

 Cremastochilus pilisicollis Horn in a large nest, and on the 30th 

 took from two nests, three specimens of Cremastochilus 

 schaumii Lee. A specimen of the latter species from the nest 

 of this ant is in the Stanford University collection. 



C. schaumii leaves the nests in the early part of April and is 

 seen flying in the sunshine, or more often lying in the roads. 



Pheidole californica Mayr. Common, nesting under sticks, 

 stones and old cans. One flourishing nest was under a piece of 

 steel rail. Solenopsis molesta frequently shares the nest. The 

 type of the Staphylinid, Conosoma heathi Wasmann, was collected 

 in April from the nests of Pheidole, but I took none during my 

 spring collecting. 



Solenopsis molesta Say. Common. It nests with Tapi- 

 noma sessile, Camponotus maculatus subsp. vicinus, Camponotus 

 maccooki and Prenolepis imparls . Independent nests are not 

 uncommon. 



Cremastogaster lineolata subsp. coarctata Say. Com- 

 mon under stones in damp places. MyrmecophUa formica- 

 rum occurs in most of the nests. 



Hetaerius wheeleri sp. nov. 



Length 2 mm. Color reddish brown. Form broadly oval, robust, shining. 

 Upper surface finely punctate, each puncture with fine recumbent hair. Head 

 piceous, coarsely punctate, hairy; front concave. Prothorax wider than 

 long, narrowed in front; margin inflexed at the third distance from base, 

 separated from disc by impunctate impression, which becomes broader and 

 deeper from front to rear and ends in deep pit at the posterior angle; divided 

 at basal third by shallow impression; the posterior part elevated, piceous, 

 the anterior part flat; disc wider than long, punctate, each puncture with fine 

 hair. Elytra slightly wider than thorax at base; outer striae becoming con- 

 fluent with margin at about one half distance to base of elytra; the first two 

 discal strise nearly attaining the apex of the elytra; inner strise extending 

 about two thirds the distance to apex. Propygidium finely punctate, hairy. 

 Prosternum flattened, coarsely punctured, emarginate at base and apex, 

 margined at summit from base to five-eights distance from base to apex; 



