780 Coleopterological Notices, VI. 



laiy palpi somewhat more than right-angled, the terminal joint of 

 the labial nearly as in Emelinus. The antennae are moderate in 

 length, somewhat slender, with the third joint moderate in length, 

 the eleventh swollen at the middle and very obliquel}^ pointed. 

 Tibiae trnncate, with a slender setiforra internal spnr at apex. 



The eight species known thus far may be distinguished as fol- 

 lows : — 



Elytra each with a submedian spot of black and another between basal third 



and fourth, the two generally united at the sides 1. iiullifer 



Elytra with a narrow dark median fascia widely interrupted at the suture, 

 generally without trace of a scutellar spot; small species. 

 Median fascia very narrow and strongly oblique, usually resolved into two 



small spots on each elytron; head pale 2. signatllS 



Median fascia wider and transverse; head blackish 3. suMasciatus 



Elytra with a broad median fascia of black, not interrupted at the suture ; 

 larger species. 

 Fascia broadly produced posteriorly along the suture for a short distance. 



Legs pale flavo-testaceous throughout 4. ]iii1)bai'di 



Legs in great part black; body stouter 5. scliwarzi 



Fascia not at all produced posteriorly; antennit? pale flavo-testaceous 

 throughout. 

 Dorsal pygidial plate of the female with four lamellate teeth on the in- 

 ner surface at apex; scutellum large 6. fasciatus 



Dorsal plate with three teeth in the female; scutellum relatively small. 



7. tricuspis 

 Elytra and entire body piceous-black throughout 8. ater 



The sexual characters are quite feeble throughout, and affect 

 principally the hind femora and antenna?, the former being some- 

 what thicker in the male, but without a dense internal pad of pu- 

 bescence, and the latter slightly shorter and thicker in that sex. 

 The elytral punctures, though generally rather coarse, are always 

 simple and impressed, and do not have the flat polished floors ob- 

 served in Emelinus. 



1. Z. niibifer Lee— Proc. Am. Phil. Soc, XVII, 1878, p. 425 (Xylophi- 

 lus). 



Somewhat elongate, subparallel and feebly convex, the surface 

 polished, black, the elytra pale, luteous, each bimaculate with 

 black; femora blackish, the tibiii^ and tarsi pale; antenna? pale 

 flavo-testaceous, the basal joint blackish; vestiture rather long, 

 even, inclined and stiff but not very dense. Head rather small, trans- 

 verse, finely, not densely punctate ; eyes larger than usual, sepa- 



