CERAMBYCID^E 263 



acters stated above, but in the still smaller and more slender tarsi, 

 shorter legs and other features readily observable. Of nitidum Lee., 

 I have three very good specimens from Monterey, California; it 

 extends thence far to the northward into Oregon. 



Nothorhina Redt. 



The species here described under this name are allied closely to 

 Criocephalus and have similar large and coarsely faceted, emarginate 

 eyes, but differ in the generally stouter antennae, sometimes rapidly 

 tapering distally and clothed basally with long and close-set erect 

 pallid hairs, also in the shorter tarsi, thus lying between Liasemum 

 and Criocephalus though very much closer to the latter. The 

 general habitus of the body is similar to that of Criocephalus in 

 every way. The species are more numerous than supposed and 

 those in my cabinet are divisible into two strongly marked groups 

 as follows:* 



Prothorax but slightly wider than long, with a large subquadrate median 

 concavity; antennae short, about one-half as long as the body, nearly 



similar in the sexes and notably stout basally 2 



Prothorax transverse, without trace of a central subquadrate concavity; 

 antenna? very much longer, sometimes scarcely shorter than the 



body 3 



2 Piceous-black, finely pubescent; head roughly punctate, the eyes 

 large, deeply emarginate; prothorax shorter than wide, rounded, 

 punctate, broadly excavated medially, the excavation not extending 

 much before the middle, toward the sides with elevated asperate 

 punctures; antennae scarcely half as long as the body, rufescent 

 basally. Length 17.5-22.5 mm. Oregon (Prairie Paso). [Asemum 



asperum Lee., Proc. Acad. Phila., 1854, p. 18] aspera Lee. 



A Similar to the preceding but having the pronotal concavity sub- 

 quadrate in form, extending from near the base to apical third 

 or even somewhat beyond and with a low obtuse tuberculiform 

 swelling at its posterior limit at basal fourth of the pronotum; 

 antennae black basally, feebly picescent distally, evidently some- 



* Further study indicates that the species here assigned to Nothorhina do not belong 

 to that European genus, the type of which is a small insect with filiform antennae and 

 finely faceted eyes, but should merely constitute a section of the genus Criocephalus. 

 Just why LeConte separated Asemum asperum from Criocephalus and placed it in 

 Nothorhina I cannot surmise, except perhaps because of the peculiar pronotal concavity 

 of that and allied species; but spissicornis has even more basally thickened and pubes- 

 cent antennge, associating it closely with asperum in that respect, while the prothorax 

 is wholly different and of the usual form in Criocephalus. I am decidedly of the opinion 

 that Nothorhina does not occur in America but leave the assignments as originally 

 made for the time being. 



