lO CASEY 



5 



feebly alternating in prominence, the intervals with single series 

 of moderate punctures, each bearing anteriorly a small tubercle 

 and a small suberect hair, which is similar to those of the head, 

 pronotum and abdomen, the latter coarsely, closely and evenly 

 punctate, the interspaces dull in lustre. Length 13. '^-15.3 mm.; 

 width 4.6-4.9 mm. California (San Francisco) . \-= N. galeata 

 Lee. ] cristata Esch . 



Body smaller and notably more slender than in the preceding, blackish, 

 the under surface and legs rufo-piceous, the small hairs pale and 

 distinct ; head nearly as in cristata^ the third antennal joint slightly 

 shorter than the fourth and longer than the fifth ; prothorax nearly as 

 in cristata throughout, except that the apex is almost rectilinearly 

 truncate between the rounded and onW very slightly produced 

 angles and not broadl}^ and angularly emarginate as in that species, 

 and the sides are less converging toward base or less inflated before 

 the middle ; elytra more oval, gradually more narrowing basally, 

 slightly wider than the prothorax, three-fourths longer than wide, 

 the crests evidently alternating in prominence only near the base 

 and toward apex, composed of smaller and shorter carinules than 

 in cristata^ the tubercles of the interspaces much more minute ; 

 abdomen coarsely but more sparsely punctured medially, the inter- 

 spaces much more shining. Length 12.7 mm.; width 4.0 mm. 

 California (Siskiyou Co.) pullata n. sp. 



4 — Form narrower than in cristata and much smaller in size, brownish- 



black, the interspaces of the anterior parts and elevations of the 

 elytra similarly shining, the surface with small sparse hairs ; head 

 similar but more strongly and obliquely narrowed anteriorly, the 

 third antennal joint fully as long as the fourth and longer than 

 the fifth ; prothorax nearly similar in form and in its verv coarse 

 crowded sculpture, but with a distinct depression, extendiwg 

 obliquely and outwardly and obliquely backward from each of 

 the rounded impressions; elytra Qval, with parallel and somewhat 

 strongly, evenly arcuate sides, fully three-fourths longer than wide 

 and very much wider than the prothorax, the elongate tubercles 

 forming the interrupted crests larger and less numerous than in 

 cristata^ with the alternating series only slightly more prominent, 

 the punctures of the interspaces not, or only very faintly, tubercu- 

 liferous ; abdomen less coarsely and more sparsely punctured 

 medially. Length 11. 4-13. 2 mm.; width 3.S-4.4 mm. Cali- 

 fornia (El Dorado and Sacramento Cos.) sponsa n. sp. 



5 — Alternate ridges of the elytra very much more prominently elevated 



throughout; head medially carinate as in c;-/>/a/rt' 6 



Alternate ridges not more prominent, all the series of small cariniform 

 tubercles equal and only moderately elevated, the tubercles much 

 smaller than in the cristata type ; head without longitudinal 

 carina 7 



6 — Form elongate, convex, black, dull in lustre, the elevations shin- 



ing, the sparse hairs short but distinct ; head sculptured as in 



