Horn.] 



OPHRYASTJNI. 41 



densely scaly and sparsely hairy. Thorax transversely oval, truncate at 

 base and apex, sides regularly arcuate, disc convex, densely tuberculate, 

 each tubercle punctured at summit, surface sparsely hairy. Elytra oblong 

 oval and with rows of moderately large punctures deeply impressed, not 

 closely placed, intervals flat, densely scaly, each with two rows of mode- 

 rately long erect black hairs. Body beneath black, not scaly, coarsely and 

 deeply punctured. Legs piceo-rufous or black, sparsely scaly and hairy. 

 Length .32 inch ; 8 mm. 



Excepting its black color this species resembles very closely Peritaxia 

 hispida, of the present tribe, in its general form and appearance, the 

 generic characters are however very different. 



Occurs in Nevada. 



DYSLOBUS^Lec. 



Dyslobm (pars) Lee. Ann. Mag. Nat. Hist., 1869, p. 380. 



Rostrum longer than the head and slightly narrower, slightly wider at 

 base and apex than at middle, alae very feebly divergent, base cylindrical, 

 apex sub-quadrangular and feebly emarginate. Front convex separated 

 from the rostrum by a feeble transverse impression. Scrobes deep in front, 

 rapidly evanescent posteriorly, slightly arcuate and directed toward the 

 middle of the eye. Eyes transverse oval, obtuse beneath. Antenna? 

 moderate, scape feebly thicker to tip, attaining the hinder margin of the 

 eye ; funicle 7-jointed, first joint slightly longer, 27 obconical and gradu- 

 ally shorter ; club elongate oval, pointed. Thorax oval, not w r ider than 

 long, lobes broad but very short, firnbriate. Scutellum confined entirely to 

 the peduncle. Elytra oblong oval, not wider than the thorax. Metasternum 

 short, side pieces moderate, suture distinct. Intercoxal process quaclran 

 gular, arcuate at apex. Second segment shorter than the other two united, 

 first suture very nearly straight. Anterior tibia3 mucronate, arcuate in 

 both sexes, denticulate within, middle tibirc straight, mucronate, hind 

 tibke straight $ or suddenl} r arcuate near the tip and furnished with a 

 brush of moderately long silken hairs J\ not mucronate at tip. Articular 

 cavities of hind tibiae open. Tarsi normal. Body densely scaly and with 

 very short hairs. 



Having found it necessary to separate the species of Dyslobus to form 

 two genera, I have chosen as the type the first species mentioned (D. segnis) 

 especially as it is the only one in which the second abdominal segment is 

 rather short, and the first suture straight. This genus must be placed near 

 Panscopus, which it resembles somewhat in form but is rather more elon- 

 gate. 



D. segnis Lee. (Otiorhynchus) Pacif. R.R. Rep. App. I, p. 56, 1857 



Form oblong, surface densely covered with pale brownish scales and very 

 short hairs. Head and rostrum as long as the thorax, densely covered with 

 brownish and cinereous scales. Thorax broadly oval, as wide as long and 

 nearly as wide as the elytra at their widest part, apex and base truncate, 

 sides regularly arcuate, disc feebly convex, densely covered with brownish 

 ruor. AMEII. PHILOS. soc. xv. 96. p 



