312 COLEOPTERA OF NORTH AMERICA. 



Tbe eyes are very deeply eniargiiiate in Pyrotriebus, roundfd, 

 with a suiull but distinct emargination in Encyclops, feebly emar- 

 ginate in Leptalia. 



Tiie genera may be thus distinguished : — 



Tarsi wider, joints 1-3 brush-like beneath. Pyrotiichus. 



Tarsi slender, 1st joint very long ; 



Hind tarsi with basal joint sulcate, brush-like at the sides. Leptalia. 



Hind tarsi with basal joint cylindrical. Encyclops. 



The differences in the tarsi are similar to those observed in 

 the three groups of Lepturini. Pyrotrichus being similar to 

 Rhagium, Leptalia to the Toxotus group, and Encyclops to the 

 genuine Lepturie. 



To Le[)talia belongs Anoj)lodera macilenla Mann., a black 

 species from Alaska; A. Fraukenha^useri 31a7ui. is a variety with 

 strijjcd elytra and yellow legs; Lcptura fuscicollis Lee. is a 

 larger variety from Vancouver and California, in which the elytra 

 are also striped, and the legs yellow, sometimes varied with black. 

 The reference to Anoplodera was singnhirly inappropriate, since 

 the sides of the prothorax are armed with a rather acute tubercle, 

 almost as in Centrodera. 



Tribe XVIIL— LEPTURIi\I. 



The numerous species composing this tribe are easily recog- 

 nized by the prominent conical front coxae, with the cavities 

 angulated externally, open, sometimes almost closed behind ; 

 middle coxal cavities widely open externally; the palpi are 

 always unequal, the maxillary elongated, the last joint cylindrical, 

 or triangular, impressed. The head is variable in form, either 

 gradually narrowed behind the eyes, or suddenly and strongly 

 constricted, in either case the neck is long; the front is slightly 

 declivous, and the antennae are inserted well in frcmt of the eyes, 

 or slightly between them ; the eyes are oval, longitudinal, or 

 slightly oblique, entire or emarginated. The mandibles are flat, 

 acute, and fringed on the inner margin. The hypostoma is 

 defined by very distinct lateral lines, the mentigerous process is 

 very distinct, and the mentum flat and trapezoidal. The other 

 characters are variable, the antenns^ are usually slender, some- 

 times subserrate; the jirothorax is usually wider at base, some- 

 times tuberculated at the sides; the elytra usually narrowed from 



