Coleopierological Notices. 99 



P. COlljunctlls n. sp. — Evenly elliptical, one-half longer than wide, 

 black ; legs and aiitennje piceous-black ; strongly shining. Head twice as 

 wide as long, finely, rather sparsely but distinctly punctate ; anterior margin 

 subtruncate in the middle ; antennae rather robust, last joint of club moderately 

 densely and rather coarsely pubescent, but slightly longer than the two pre- 

 ceding together. Prothorax rather distinctly more than twice as wide as long ; 

 base three-fourths wider than the apex, the former transverse, very feebly 

 sinuate at each side of the scutellum ; basal bead very feebly defined in the 

 middle, obsolete laterally ; disk very minutely sparsely and indistinctly punc- 

 tate. Scutellum three-fourths wider than long, ogival, very minutely, feebly 

 punctate except toward the edges. Elytra about two and one-half times as 

 long as the prothorax, gradually, evenly and not obtusely rounded behind ; 

 sutural striae very fine, entire, very closely bordering the scutellum; discal 

 fine but distinct, vanishing at one-fifth the length from the base ; disk very 

 finely but distinctly reticulate throughout, punctured in approximate rows of 

 small distinct feebly impressed punctures, the alternate rows not apparently 

 more well marked or even, the punctures being sensibly dilated and crescenti- 

 form, each with the usual minute recumbent hair, the reticulations and punc- 

 tures stronger toward apex and the sides, and almost obsolete near the base. 

 Abdomen sparsely clothed with coarse hair. Legs moderately robust ; terminal 

 spurs of posterior tibiae small, short but distinct and not concealed by the 

 even and closely-placed row of terminal spinules ; corresponding tarsi rather 

 slender, nearly three-fourths as long as the tibiae, the basal joint two-thirds as 

 long as the second. Length 1.8-2.3 mm. 



California (San Diego); Arizona. 



The nietasternal process is of the usual width ; it projects slightly 

 beyond the middle coxae, and is strongly rounded at the apex, the 

 apical bead very fine and not much dilated laterally. 



This species is not very closely related to any other, resembling 

 penicillatus in sternal structure, but differing greatly in size, shape 

 and sculpture. 



P. seriatus Lee. — Proc. Ac. Phil., 185G, p. 15. — Broadly, evenly ellipti- 

 cal, less than one-half longer than wide, black ; antennae black ; legs piceous- 

 black, the tarsi dark piceo-testaceous ; upper surface polished. Head finely 

 but distinctly punctate, feebly subtruncate in the middle at apex ; antennae 

 moderate, club rather robust, the last joint distinctly longer than the two 

 preceding together. Prothorax fully twice as wide at base as at apex, and 

 nearly two and one-half times as wide as long, the basal bead extremely fine 

 and feeble ; disk minutely and sparsely, but rather distinctly punctate, the 

 surface not visibly reticulate. Scutellum nearly twice as wide as long, ogival ; 

 sides distinctly arcuate ; surface very minutely punctate. Elytra nearly two 

 and one-half times as long as the prothorax, very broadly, evenly rounded 

 behind, the sutural and discal striae as usual, the surface excessively finely, 

 feebly and indistinctly reticulate, more visibly so near sides and apex ; disk 



