306 CALIFORNIA ACADEMY OF SCIENCES. 



very finely granulate, bristling with short setae; antennas nearly as long as 

 the head, prothorax and elytra together, very robust, basal joint as long as 

 th^ next two together, joints four to ten, increasing gradually in width, the 

 the latter nearly twice as wide as long eleventh slightly constricted toward 

 tip. nearly as long as the three preceding together. Prothorax one-third 

 wider than the head; sides parallel aud feebly arcuate; base broadly and 

 strongly arcuate; apex broadly and feebly emarginate; apical angles nar- 

 rowly rounded, basal very broadly so; disk three-fourths wider than long, 

 evenly and feebly convex, extremely finely and sparsely punctate. Elytra at 

 base as wide as the prothor ix; sides feebly divergent posteriorly, and nearly 

 straight; together much wider than long and equal in length to the prono- 

 tum; surface depressed, very finely and somewhat asperately punctate. Scu- 

 tellum triangular, strongly transverse. Abdominal segments decreasing in 

 width from the fourth, seventh much narrower, border very strong, deep, 

 rapidly becoming shallower posteriorly; surface polished, transversely and 

 excessively finely reticulate, impunctate. Under surface of the abdomen 

 finely aud densely pubescent, finely but rather sparsely punctate; punctures 

 slightly asperate. Legs rather long; tarsi slender, first joint of the posterior 

 as long as the next two together. Length 4.0-5.0 mm. 



California (Santa Rosa, Sonoma Co., 4). 



The specimens indicated were taken while running actively 

 in the crevices of the shaggy bark on a large oak near its 

 junction with the soil; there were many large piceous ants in 

 company with them, but I do not know whether this was 

 otherwise than accidental. 



CALODERA Mann. 



C. attenuata n. sp. — Form very slender; body dark testaceous-brown; 

 head piceous; legs testaceous; antennas dark fuscous; integuments shining; 

 pubescence coarse and rather dense, pale flavo-cinereous, conspicuous espec- 

 ially on the antennae where it is very short aud dense. Head orbicular, as 

 wide as long; sides behind the eyes very feebly convergent and strongly arcu- 

 ate; front and occiput evenly and moderately convex, very finely and not 

 densely punctate; antennas much longer than the head and prothorax 

 together, moderately robust, three basal joints decreasing uniformly and very 

 rapidly in length, the third scarcely more than one-half as long as the first, 

 conical, and slightly less than twice as long as wide, joints four to ten in- 

 creasing very slightly in length, the former one-third wider than long, the 

 latter one-half Avider than long, eleventh as long as the two preceding 

 together, slightly compressed toward tip. Prothorax widest at one-fourth 

 its length from the apex where it is scarcely wider than the head and as wide 

 as long; sides strongly rounded thence to the apex, and extremely feebly 



