AMERICAN COJ.EOPTERA. 287 



authority of Dr. Horn, who seems, however, to have had some 

 doubt of their identity, judging from the phicing of the specimens 

 in his cabinet. Fuscula is probably confined to the Atlantic region, 

 and may be easily distinguished from muscula by the prominent 

 hind angles of the thorax, and the obvious disparity in the hind 

 tibial spurs in the male ; a careful comparison will show numerous 

 other differences in minor details. 



13. D. longiclava sp. nov. 



Eather robust, piceous, elytra distinctly bronzed, with rather broad nebulosly 

 pale side margin. Head but little more than half as wide as the prothorax, 

 densely but not deeply punctate ; clypeal suture faint, not impressed; clypeus 

 moderately reflexed, distinctly sinuate in front, the sides convergent anteriorly, 

 the angles rounded. Antennal club ( % ) very long, about one-half longer than 

 the funicle, and fully equal to all the preceding joints combined ; terminal joint 

 of maxillary palpi slender, gradually pointed from about the basal third, the 

 apex narrowly truncate. Prothorax nearly as wide as the elytra, widest before 

 the middle, sides not sinuate posteriorly, hind angles obtuse, but well defined ; 

 surface closely punctate throughout and with a feeble but distinct median sul- 

 cus; basal and apical marginal lines fairly well defined. Elytra moderately 

 strongly and closely punctate, the inner of the three longitudinal raised lines- 

 present in many species — evident, the others barely detectable. Length 6a mm. 



Ifab. — California (Sonoma County, Ricksecker). 



Two males only have been seen. In both of these the antennal 

 club is virtually destitute of the usual setae, which sparsely clothe 

 the external faces of first and last joints. This is possibly accidental, 

 but the specimens are otherwise in good condition, and it is difficult 

 to see how they could have become so completely denuded. Longi- 

 clava looks not very unlike muscula, but the resemblance is only su- 

 perficial. The great length of the antennal club is not approached 

 by any other species of the genus. A third specimen, also a male, 

 has recently been sent me from the Cambridge Museum. It agrees 

 completely in antennal formation with the original specimens, but 

 has the elytra entirely pale. 



14. D. i>alleiii« Lee. 



A rare species, of which I have seen only four specimens, includ 

 ing the type ; all females. The type is without definite locality, the 

 other three are from the Santa Cruz Mountains, in the middle coast 

 region of California. The small size, pale color, coarse elytral 

 .sculpture, relatively small head, with narrowly reflexed clypeus 

 and long antennal club, make its recognition easy. 



TEAN8. AM. ENT. SOC, XXVII. AUG., 1901. 



