COLEOPTERA OF SOUTHERN CALIFORNIA. 257 



E. difficilis, so far as the observation of the writer goes, 

 is confined to the coast region about San Diego. It is 

 obvious from the above that the name convexus must 

 be restored. 



75. Notoxus caudatus, sp. nov. 



Moderately elongate, piceous brown, legs somewhat paler, the thoracic 

 horn rufous; the elytra are best described as brownish black, each with 

 two testaceous spots, one transversely oval about two-fifths from the 

 apex, the other antemedian, larger, subtriangular, extending forward 

 laterally to the humeral umbone; or the elytra may be described as tes- 

 taceous, with a triangular scutellar area, a median band, and the apex 

 broadly dark; these dark areas confluent both along the suture and side 

 margin; the apex of the elytra is in some specimens narrowly, indefinitely, 

 and indistinctly paler. Pubescence cinereous, fuscous in great part on the 

 darker portion of the elytra, intermixed with sparse, longer, semierect 

 hairs. Head nearly flat, rather closely but not deeply punctate; eyes 

 about twice as long as the tempora. Prothorax transversely globose, the 

 horn broad, dilated, the margin crenulate at sides except in front, crest 

 rather strongly elevated, distinctly margined, the margin feebly or scarcely 

 crenulate; surface of prothorax sparsely, finely punctate at middle, more 

 closely at sides. Elytra widest just behind the middle, the apex rather 

 suddenly obtusely rounded and nearly similar in the sexes. In the males 

 there is a small, rounded, impressed area immediately before the middle 

 of the apex of each elytron; this area is clothed with short, dense, closely 

 recumbent cinereous hair; in the same sex the pygidium is strongly pro- 

 duced to an acute point, the sides of the process are sinuate before the 

 apex; and the fifth ventral is broadly, arcuately emarginate, the limiting 

 angles of the emarginatiou being sharply defined and a little reflexed. In 

 the female the elytra and tip of abdomen are unmodified. 



Length, 3. 1-3.5 mm. 



Described from a series of eight specimens collected 

 at Santa Fe, New Mexico, by Dr. A. Fenyes. 



N. caudatus is perhaps most like N. nuperus in general 

 facies, but the extraordinary sexual characters of the 

 male are nowhere approached in our species. There is 

 considerable variation in the extent of the pale spots of 

 the elytra, more especially the anterior ones, which are 

 in some specimens almost lacking. 



17 October 23, 1901. 



