780 ColeojJierological Notices, VI. 



lar}' 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 obliquely pointed. 

 Tibiae truncate, with a slender setiforra internal spur 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. iilltoifer 



Elytra with a narrow dark median fascia Avidely 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. sigiiatlis 



Median fascia wider and transverse; head blackish 3. SUbfasciatiis 



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

 larger species. 

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



Legs pale flavo-testaceous throughout 4. Iiiilibardi 



Legs in great part black ; body stouter 5. scliwarzi 



Fascia not at all produced posteriorly; antennae pale flavo-testaceous 

 throughout. 

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

 ner surface at apex ; scutellum large 6. f asciatus 



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



7. tricuspid 

 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 punctui'es, though generally rather coarse, are always 

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

 served in Emelinus. 



1. Z. nulbifer 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 tibia? and tarsi pale; antennj\? 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- 



