200 H. C. FALL. 



Antennse subpectinate in the male ; the first two ventral segments ( % ) with 



a median line of short, dense, erect hairs 8. lugubris. 



Tarsi very slender, the fifth joint about five times as long a? wide; terminal 

 joints of palpi not compressed, very elongate, subacicular; male an- 

 tenna? subpectinate 9. gracilipes. 



1. X. <lisf uiim u. sp. — Form parallel, moderately robust; brown, pubescence 

 fine, sericeous, fulvocinereous, moderately plentiful. Antennse about one-third 

 as long as the body, first joint stouter, oval, second smaller but similar; third to 

 tenth triangular, third longer than wide, the outer angle obtuse ; fourth to sev- 

 enth about as wide as long, the outer angle acute; eighth a little longer than the 

 seventh and rather longer than wide, ninth about one-third longer than the 

 eighth ; tenth similar to the ninth ; eleventh elongate-oval or fusiform, apex 

 pointed. .Terminal joints of palpi about one-fourth longer than wide, outer edge 

 oblique, inner angle rather broadly rounded. Eyes moderately large and con- 

 vex, width of front slightly greater than twice their vertical diameter in the 

 female; surface of head shining and finely not densely punctate. Prothorax 

 shining, sparsely finely punctate and minutely punctulate; side margins nar- 

 rowly retiexed. Elytra finely rather closely punctate; lightly striate, the stria? 

 finely somewhat distantly punctate. Beneath more densely finely punctate. 

 Length 5-7.5 mm. 



California, Pasadena (Fenyes) ; San Diego (Blaisdell). 



Only three examples of this apparently rare species have been 

 seen. It is our largest species and departs a little from the typical 

 species of the genus in its slightly longer outer joints of the antennse, 

 forming a feebly defined club. 



2. X. pallid US Lee. — Form narrow, oblong, nearly as in peltatus, but 

 smaller: pale ferruginous, pubescence well developed. Antenna? strongly acutely 

 serrate, " nearly as long as the body in the male ; " eyes large and convex, width 

 of front subequal to their vertical diameter in the male. Anterior margin of the 

 metasternum ungulate at middle, the angle a little obtuse and well defined. 

 " Head and thorax densely punctulate, elytra equally densely and somewhat ru- 

 gosely so;" elytral stria? fine, evidently punctate. Length 2.5-3 mm. 



Lower California (Cape San Lucas). 



The above short description is a transcript of some brief notes 

 made upon the LeConte type and upon a second example from 

 the same source in the Ulke collection, together with one or two 

 points taken from the original description, the latter enclosed in 

 quotation marks. The length of the antenna? as given by LeConte 

 seems somewhat excessive, but I unfortunately neglected to investi- 

 gate the accuracy of his statement. 



3. X. mucorens Lee. — Dark brown or piceous, legs dark rufous, antennse 

 and palpi paler; form precisely as in peltatus, with which it is closely allied, dif- 

 fering only as follows: Pubescence much denser and more sericeous; eyes larger, 



