118 Trans. Acad. Sci. of St. Louis. 



punctures only moderately coarse, uneven and very obscurely lineate 

 in arrangement; abdomen fully as wide as the elytra, parallel, some- 

 VFhat finely but not closely punctate and shining. Male with a deep 

 narrow impression in apical half of the median line of the fifth ventral, 

 the sixth with a broad shallow apical sinus and adjoining triangular 

 impression, the latter with short spiculose hairs much as in jacobina 

 and allied species ; female not at hand. Length 6.0 mm. ; width 0.85 mm. 

 Vancouver Island sabseriata Lee, 



Form more slender and elongate and rather more depressed, the entire body 

 and legs bright testaceous, the abdomen piceous -black, the antennae 

 fuscous; head oblong, somewhat longer than wide, the sides parallel 

 and feebly arcuate, the basal angles moderately broadly rounded to the 

 neck; eyes unusually small, anterior; punctures moderately coarse, 

 deep, well separated; antennae moderately stout, very distinctly in- 

 crassate distally ; prothorax narrow, much elongated, very much nar- 

 rower than tue head, the sides subparallel, the apical angles less broadly 

 rounded and obliterated than iu subseriata, the punctures coarse and 

 rather sparse; elytra parallel, somewhat longer than wide, about a fifth 

 wider than the prothorax and slightly, though obviously, shorter, the 

 punctures coarse, uneven and close-set, arranged in very uneven series ; 

 abdomen as wide as the elytra, finely, rather closely punctate and only 

 feebly shiniug. Male with a rather larger rounded impressed and gla- 

 brous pit in apical half of the fifth ventral, the sixth very nearly as in 

 subseriata and other species; female unknown. Length 6.7 mm. ; width 

 0.8 mm. California (San Francisco) vafra n. sp. 



Form very slender, smaller in size, d:irk piceo-rufous, the elytra and legs 

 rather brighter rufous, the abdomen more blackish; head subquadrate, 

 about as wide as long, the sides parallel and nearly straight; basal 

 angles broadly rounded to the neck; eyes small and but slightly convex; 

 punctures moderately coarse, rather close-set toward the sides and 

 base; antennae very stout, distinctly incrassate distally, the medial 

 joints but slightly longer than wide in the female; prothorax very much 

 narrower than the head, elongate-oval, the sides straight in the middle, 

 the anterior angles very broadly rounded and obliterated, the punctures 

 coarse but well separated; elytra parallel, rather longer than wide, 

 about a fourth wider and slightly, though obviously, shorter than the 

 prothorax, the punctures moderately coarse, deep, close-set and ar- 

 ranged in even and broadly impressed series, becoming confused toward 

 the inner apical angles; abdomen as wide as the elytra, finely, not 

 densely punctate and rather shining. Male unknown; female with the 

 sixth ventral evenly rounded behind, not lobed. Length 6.0 mm.; width 

 0.77 mm. British Columbia nstalata n. sp. 



The species described by LeCoute under the name jacobina, 

 is the commonest Lathrobiid in California, occurring abun- 

 dantly almost everywhere and varying greatly in size; one 

 specimen was given me by Mr. Jiilich, who stated that he 

 took it near New York City ; further questioning failed to 



