CERAMBYCIDAE. 311 



at the end. In this connection, it is important to observe tliat 

 in Stenopterus and Molovchus, which have abbreviated elytra, 

 the wings are not straight, but folded in the usual manner. 



Although the under surface of the head is limited each side by 

 a line, as in other Lepturoides, the line is less defined and the 

 mentigerous process is not more developed than in Cerambycoides, 

 and the mentum has the short transverse form so frequent in that 

 series, and totally unlike the ordinary Leptura type. 



Prof. Lacordaire describes the front coxal cavities as open 

 behind, but they are very evidently closed in N. mellitus. 



Tribe XVII.— E]VCYCLOPI]VI. 



The head is quadrate, suddenly but not strongly narrowed and 

 constricted far behind the eyes (so that the neck is very short) ; 

 front large, quadrate, nearly vertical, eyes finely granulated, 

 obliquely eraarginate, with the antennas inserted high up on the 

 front near the emargination ; antennae 11-jointed, slender, with 4§ 

 joints punctured, the rest sericeous, gena^ rather long; mandibles 

 small, acute, fringed with hair on the inner margin ; labrum 

 rather large; palpi moderate, unequal, last joint rounded trian- 

 gular; hypostoma very distinctly defined each side, mentigerous 

 process short, broad, distinct, mentum large, trapezoidal ; pro- 

 thorax constricted before and behind, wider at the base, tubercu- 

 late on the sides. Scutellum small, triangular, mesonotuni in 

 Encyclops punctured and hairy, with a very narrow median 

 smooth space, which is carinated, but does not appear to be 

 stridulating; in Leptalia the stridulating surface is large, and 

 divided by a fine dorsal groove; in Pyrotrichus not examined. 

 Elytra elongate, parallel, separately rounded in Encyclops, feebly 

 truncate in Pyrotrichus. Front coxa3 conical prominent, nearly 

 contiguous, cavities angulated, open behind ; mesosternum tri- 

 angular, coxal cavities open externally; metathoracic episterna 

 narrow, pointed behind; hind coxae not prominent; ventral seg- 

 ments nearly equal, the 1st a little longer, the 5th a little shorter. 

 Legs slender, bind pair longer, tibial spurs small ; tarsi in Ency- 

 clops slender elongated, 1st joint of all much longer, and on the 

 hind tarsi without brush of hair beneath; in Leptalia the first 

 joint of hind tarsi is sulcate, with a line of pubescence each side; 

 in Pyrotrichus wider, with usual covering beneath, and only as 

 long as the 2d and 3d united. 



