lO CASEY 



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. 3-15.3 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 laifo-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 only very slightly produced 

 angles and not broadly 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.) puUata 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 very coarse 

 crowded sculpture, but with a distinct depression, extending 

 obliquely and outwardly and obliquely backward from each of 

 the rounded impressions ; elytra oval, 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 3.8-4.4 mm. Cali- 

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



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



throughout; head medially carinate as in crzV/a/a 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 



