366 BULLETIN 63, UNITED STATES NATIONAL MUSEUM. 



obtuse, not prominent, sometimes feebl}' rounded; basal angles rec- 

 tangular. 



Propleurce sparsel}^ and evenly muricato.-granulate, more or less 

 rugulose, especially about the acetabular convexities. 



Elytra oblong ovate, widest at the middle, a fifth to a fourth longer 

 than wide; base subtruncate and distinctly wider than the contigu- 

 ous prothoracic base; humeri obtusel}^ rounded and more or less 

 prominent ; sides evenly arcuate, apex rather narrowly rounded ; 

 disc more or less depressed, rather feebly to somewhat strongly con- 

 vex, rather narrowly to somewhat broadly rounded at the sides, arcu- 

 ately declivous behind ; surface more or less rugoso-punctate cen- 

 trally along the suture, punctures sometimes rather simple, more or 

 less strongly muricato-tuberculate laterally and on apex. 



EjnpleAira' with the superior margin arcuatel)^ margining the 

 humeri and more or less distinctly visible from above; otherwise as 

 in parvicollis. 



Abdomen somewhat thickly punctate and rugulose, most so about 

 the coxse, punctures moderate in size. 



Otherwise as in parvicollis. 



Male. — SomeAvhat narrow ; antennae just slightly reaching beyond 

 the prothoracic base. Elytra arcuately or also slightly obliquely 

 declivous behind and ordinarily attenuate in apical fourth ; anterior 

 tibiae not noticeal)ly constricted at base; first two joints of the 

 anterior tarsi feebly thickened at tips beneath wdtli quite small tufts 

 of brownish yellow pubescence; that on the first joint of the meso- 

 tarsi somewhat obsolete. Otherwise as in parvicollis. 



Female. — More or less robust ; antennae about attaining the ]-)ro- 

 thoracic base. Otherwise as in parvicollis. 



Measurements. — Males: Length, 12.5-15 mm.; width, 5.9-6.5 mm. 

 Females: Length, 13.5-15.5 mm.; width, ().5-8 mm. 



Genital characters., nude. — As in parvicollis. 



Female. — The dorsal plate is not defined at apical margin from the 

 apex, the latter subchitinous and subacute at tip; also souiewhat de- 

 flexed, so that the junction with dorsal plate appears somewhat ])r()uii- 

 nent. Otherwise as in parvicollis. 



Habitat. — California (Sacramento, LeConte: Tallac, Kivertou, 

 Strawberry Valley, (),000 feet elevation, Eldorado County; Big Trees, 

 elevation 4,702 feet, Calaveras County). 



Number of specimens studied, 53. 



Type in the LeConte collection. 



Type-locality. — Sacramento, California; collector, Mr. Wittick. 



Salient type-characters. — Somewhat shining, prothorax with the 

 sides strongly rounded, tubulately constricted at base, finely mar- 

 gined; dorsum thickly and laterally rugoso-})unctate. Elytra slightly 

 convex, sides greatly rounded; humeri a little produced, rounded, and 



