NO. 16 GENUS PANSCOI'US SCHOENHERR BUCHANAN 1 5 



more or less abruptly from head, above in basal three-fourths feebly convex 

 to subplanate, and usually with distinct median and sometimes lateral cari- 

 nae (all of which may be obscured by scales) 6. 



3. Elytral costae faint, scarcely perceptible except near base, and with a mostly 



double row of setae ; even intervals with a rather closely set row of setae 

 which is partly double on fourth interval ; length, 7 mm (i ?) [Inyo County, 



Calif, (type locality) ] httfo Buchanan. 



Elytral costae evident, though not always strong ; setae on even intervals 

 sparser (except sometimes in rugicollis) or wanting 4. 



4. Color brownish black; even elytral intervals nonsetose ; rostrum with or 



without a median carina ; mentum sometimes with a trace of a median 

 carina ; metepisternal suture sometimes obliterated : apical declivity of 

 elytra distinctly reflexed in profile (in $, the c? unknown) ; length, 7.5-9 mm 

 ["Cal." (type locality); Fallen Leaf Lake, Calif.; Easton and Mount 



Adams, Wash.] ahruplus Casey. 



Color usually paler brown; even elytral intervals with at least a few setae; 

 a short length of metepisternal suture visible opposite hind coxa; apical 

 declivity of elytra (?) subperpendicular or slightly reflexed in profile 5. 



5. Length, 6.25-7.5 mm ; mentum with a feeble median carina in apical half ; 



pronotal rugosities coarser; even elytral intervals setose their entire length 

 [Mount Adams, Wash, (type locality) ; Mount Rainier and Piaston, Wash. 

 ( W. W. Baker) ; Mount Hood, Oreg. (M. C. Lane)] . .rugicollis Buchanan. 

 Length, 5.25-6.25 mm ; mentum noncarinate ; elytral costae stronger, elytral 

 setae longer and in a double or partly triple row on the costae, the flat 

 intervals sparsely and irregularly setose, or nonsetose except toward base. 

 [Alta, Utah (type locality); Priest River, Idaho] .. .schzmrci Buchanan. 



6. Elytral costae faint, all elytral intervals setose, the setae subsetaceous (about 



shape of those in Neopanscopns acqualis) ; denticulations on lower edge of 

 fore and mid-tibiae strong ; rostrum medially unicarinate ; apical declivity 

 of elytra (?) more strongly reflexed; length, 7.6-8.3 mm (Washington) 



longus, new species. 

 Elytral costae usually evident, often strong; elytral setae blunt; tibial dentic- 

 ulations feebler ; declivity of elytra (?) subperpendicular 7. 



7. All elytral intervals setose 8. 



Even intervals nearly or quite nonsetose g. 



8. Length, 5.5-7.5 mm. Prothorax widest in front of middle ; rostrum some- 



times noncarinate, but usually with a more or less distinct median carina, 

 and occasionally with lateral ones also [Kaslo, British Columbia (type lo- 

 cality) ; Salmon Arm, Kimberly, Vernon, and Grand Forks, British Co- 

 lumbia ; Molson and Tieton, Wash. : Big Fork, Mont.] . .paUidus Buchanan. 

 Length, 5-6 mm. Prothorax widest about middle ; rostrum usually with three 

 relatively coarse carinae [Parkdale, Oreg. (type locality) ; Mount Hood, 

 Oreg.] tricarinatxis Buchanan. 



9. Elytral costae strong ; seventh funicular segment only slightly wider than 



long ; rostrum usually with median carina only ; length, 6-7.5 mm (Electron, 



Wash. ) hakcri, n. sp. 



Elytral costae broader and feebler ; seventh funicular segment about twice as 

 broad as long; rostrum tricarinate; length, 6-6.5 mm [Banff Springs, Al- 

 berta (type locality) ; Olds, Alberta (Wickham collection)], .oralis Pierce. 



