478 Goleopterological Notices, VI. 



thirds wider than long, the sides parallel, evenly and moderatel^'^ 

 arcuate, the base arcuate, with the angles somewhat distinct though 

 obtuse and rounded ; apex rectilinearly truncate, the angles 

 slightly obtuse and distinctly rounded ; disk sparsely and rather 

 finely punctured, polished. El^-tra long, fully three-fourths longer 

 than wide; evidently, though only slightly, wider than the pro- 

 thorax, parallel and straight at the sides, not very broadly rounded 

 behind, the punctures moderatel}' fine and well separated; inter- 

 spaces slightly alutaceous. Length 3.8 mm.; width 1.4 mm. 



California (San Francisco). The male type above described 

 has verA' simple sexual characters, the fifth ventral being sub- 

 truncate at apex and unmodified, the genital segment large and 

 flat, with a fine deep canaliculation along the median line. 



7. T. laticollis Maun.— Bull. Mosc, 1843, p. 247 (Dasytes);Lec.: Proc. 

 Acad., Phila., 1866, p. 352 (Pristoscelis). 



Oblong, convex, shorter and broader than cylindricus, with the 

 pubescence a little longer and denser, cinereous ; body black, the 

 upper surface with a grayish-subseneous lustre ; legs and antennae 

 piceous-black, the latter feebl}' testaceous toward the base of the 

 funicle. Head confusedh' punctato-scabrous, broadly bi-impressed 

 anteriorl3', the labrum broad, feebly arcuate at apex; antennae 

 moderate, the tenth joint somewhat transverse. Prothorax three- 

 fifths wider than long, the sides parallel and strongl}' arcuate ; 

 basal angles very broadly' rounded and obliterated, the apical 

 broadly rounded but less obliterated ; apex truncate ; disk finelj'^, 

 sparsel3' punctate and polished. Elytra one-half longer than wide, 

 onl}' slightly wider than the prothorax, parallel, ver^^ broadlj'^ and 

 obtusely rounded at apex, the humeri somewhat acutely tumid ; 

 punctures rather fine and well separated, rugose by oblique reflec- 

 tion, the interspaces polished. Length 3.2-3.7 mm.; width 1.3- 

 1.5 mm. 



California (near San Francisco). Somewhat allied to cylin- 

 dricus, but broader, with more strongly arcuate sides of the pro- 

 thorax and more broadl}' rounded basal angles. The male differs 

 but little from the female, having feeble sexual characters at the 

 abdominal apex, but the prothorax is larger, although similarly 

 proportioned and is about as wide as the elytra ; the head is large 

 in both sexes. Several other very closel}' allied species are indi- 

 cated by material in my cabinet. 



