202 H. C. FALL. 



6. X. fucatns Lee. — Elongate-oval, varying in color from rufotestaceous to 

 black. The thorax is rarely rufous, with the elytra black, suture rufescent, or 

 the elytra may be paler than the thorax. Pubescence fine, short and rather 

 sparse. Terminal joint of maxillary palpus elongate, form nearly as in peltafus; 

 terminal joint of labial palpus similar but a little less elongate. Antennae 

 acutely serrate, the intermediate joints almost twice as wide as long in the male, 

 slightly wider than long in the female. Eyes small, not prominent, separated on 

 the front by about five times their longest diameter; head densely, subrugosely 

 punctate and vaguely obtusely carinate. Prothorax strongly transverse, median 

 line feebly elevated at base, sides flattened and explanate but scarcely reflexed, 

 moderately arcuate, the hind angles broadly rounded ; surface densely finely 

 punctured and with shallow larger punctures, which are usually sparse or even 

 scarcely evident at the middle, but become predominant at sides. Elytra finely 

 alutaceo-rugose, deeply, finely striate, the striae scarcely evidently punctate, 

 intervals nearly flat, at least on the disk. Metasternum coarsely rather closely 

 punctured, finely sulcate at middle; ventral surface finely punctate. Length 

 2.5-5 mm. 



Very widely dispersed, occurring throughout the northern United 

 States and Canada, and extending down the Pacific Coast to South- 

 ern California. It is apparently rare in New England, and I have 

 seen no specimens from New York, although it must occur there. It 

 is given in Smith's New Jersey list as rare in the Orange Mountains, 

 but does not appear in either the Washington or southwestern Penn- 

 sylvania lists. Dury records it from Cincinnati, and I have seen it 

 from Illinois, Canada and various localities in Michigan and the 

 Lake Superior region, the latter being the type locality. Other 

 localities represented before me are Kansas; Brownsville, Texas; 

 Colorado, Wyoming, Washington State and California, as far south 

 as San Diego. 



A good deal of variation within somewhat narrow limits is observ- 

 able in the material at hand, and I have little doubt that several 

 closely allied species are involved ; I am, however, quite unable to 

 define them at present. Among the Californian representatives 

 alone there are no less than five forms that are possibly good spe- 

 cies, but they are either present in single specimens or in one sex 

 only, or are connected by intermediates in such a way that nothing 

 definite can be said. 



7. X. pubescens Lee. — Oval, convex, piceous throughout or with the 

 elytra dark rufous, integments opaque, pubescence yellowish gray and rather 

 dense. Antenme broadly acutely serrate ; eyes small, remote, not prominent; 

 head longitudinally densely substrigose, not carinate. Prothorax very convex, 

 side margins not at all flattened or reflexed, surface densely finely subrugosely 

 punctured. Elytra deeply finely striate, stria? not evidently punctured, inter- 



