CERAMBYCID^: 375 



base, similar in outline to the preceding, very coarsely and conflu- 

 ently punctate, the narrow interspaces polished; scutellum indistinct 

 because of the dense vestiture but moderate and subequilatero- 

 triangular; elytra much wider than the prothorax, about twice as 

 long as wide, very feebly tapering, evenly rounding at apex to the 

 suture without trace of truncature, the sutural angles rounded; sur- 

 face shining, sparsely and very minutely punctulate; legs rather short 

 and thick, dark ferruginous, the femora black, clavate distally, the 

 posterior feebly, the anterior and middle tarsi broad, slightly broader 

 in the male; under surface closely and uniformly clothed with short 

 yellowish hairs; anterior coxae well separated; fifth ventral very 

 short, broadly sinuate (cf), or a little longer than fourth and rounded 

 (9 ). Length (cf , 9 ) 8.8-13.0 mm.; width 2.7-4.0 mm. California 



(San Diego) brevitarsis n. sp. 



Rather less stout and more elongate, similar to the preceding in structure, 

 coloration, sculpture and vestiture, except that the antennae (cf) 

 are about two-thirds as long as the body, more thickened basally 

 and relatively more tapering distally, with the third joint but just 

 visibly longer than the first, which is more evenly obconic and not 

 abruptly narrowed basally, the prothorax still more evidently shorter 

 than wide and with the close uneven punctures very much less coarse, 

 the elytra more elongate, with the basal expansion of the sutural 

 pale vitta more extended laterally nearly to the side margins and 

 with the nude ante-median transverse fascia more anteriorly ar- 

 cuate on each elytron, the apices not evenly rounding to the sutural 

 angles but narrowly sinuato-truncate, with the sutural angle rather 

 acutely prominent; legs nearly similar, the under surface very densely 

 and uniformly clothed throughout with pale yellow decumbent and 

 semi-erect coarse hairs. Length (cf) 12.0 mm.; width 3.65 mm. 

 California (Siskiyou Co.) crucialis n. sp. 



The difference between crucialis and brevitarsis in pronotal 

 sculpture and conformation of the elytral apices is remarkable and 

 apparently decisive. 



Microclytus Hald. 



The discovery of additional material shows that Cyrtophorus is 

 monotypic and represented only by the type, verrucosus Oliv. 

 Insinuans will have to be placed in Microclytus, where its rugosely 

 punctate pronotum and long antennae, with relatively shorter sec- 

 ond joint, isolates it thoroughly from gazellulus Hald., or gibbulus 

 Lee. ; that it is the male of gazellulus, as stated by Dr. Hamilton, 

 is altogether impossible. The following is still another species: 



Microclytus frosti n. sp. More slender and convex than gazellulus 

 and differing in its longer antennae and vestiture of the elytral apex; 

 body slender, somewhat shining, the antennae (c/ 1 ) extending to apical 

 third of the elytra, slender, the second joint less than two-fifths as long 



