CERAMBYCIDAE. 327 



pubescence each side ; in Pyrotrichus wider, with usual covering 

 beneath, and only as long as the 2d and 3d united. 



The eyes are very deeply emarginate in Pyrotrichus, rounded, 

 with a small but distinct emargination in Encyclops, feebly 

 emarginate in Leptalia. 



The genera may be thus distinguished : 



Tarsi wider, joints 13 brush-like beneath. PYHOTBICHUS. 



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 Ste- 

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

 genuine Lepturae. 



To Leptalia belongs Anoplodera macilenta Mann, a black 

 species from Alaska ; A. Frankenhseuseri Mann, is a variety with 

 striped elytra and yellow legs; Leptura 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 singularly inappropriate, since 

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

 almost as in Centrodera. 



Tribe XVIIL LEPTURINI. 



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 front 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 

 denned by very distinct lateral lines, the mentigerous process is 

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

 characters are variable, the antenna? are usually slender, some- 

 22 May, 1373. 



