316 PROCEEDINGS OF THE ACADEMY OF 



bris, sat parce punctatis, abdomine brevioribus, apice dehiscentibus obtuse ro- 

 tundatis, tibiis tarsis antennisque rufo-testaceis, his basi nigris. Long. "52. 



California, one male, Mr. A. Murray. The abundance of hair conceals the 

 form of the thorax, which appears to be more gradually narrowed in front than 

 in Lichnanthe v u 1 p i n a. 



39. Diplotaxis in s i g n i s, oblongo-ovata, convexa, rufo-ferruginea, nitida, 

 capite confertim fere grosse punctato, clypeo marginato, antice subtruncato, 

 sutura frontali profunda, fronte transversim vix elevata ; thorace fortiter 

 punctato, brevi, ante medium valde angustato, lateribus obliquis ad medium 

 obtuse angulatis, angulis posticis obtusis, anticis acutis, ad apicem margin- 

 ato, elytris fortiter parcius punctatis, vix tricostatis, tibiis anticis tridentatia 

 dente ultimo oblique truncato, unguiculis medio breviter dentatis. Long. *52. 



Salt Lake Desert. Resembles at first sight an immature specimen of D. 

 brevicollis Lee, but belongs to a very different group of species, being 

 related toD. Haydenii L,ec, ( Journ. Acad. 2d ser. 3, 272). It differs from 

 the last named by the larger size, by the head and thorax being much more 

 thickly and coarsely punctured, and by the elytra being more sparsely punc- 

 tured ; the usual smooth lines of the latter are scarcely elevated, and are 

 marked with a row of small punctures. 



40. Phobetus testaceus, longius ovatus, convexus, flavo-testaceus niti- 

 dus, capite sat dense punctato, clypeo rotundato fortiter marginato, thorace 

 parce subtiliter punctato, apice valde marginato, lateribus pilis longis fimbri- 

 ato, elytris parce hand profunde punctatis, lineis solitis lsevibus, margine 

 laterali et basali longe navo-pilosis, stria suturali profunda ; pygidio parce 

 subtiliter punctulato, et piloso ; pectore pedibusque longissime pilosis, anten- 

 nis 10-articulatis. Long. - 58. 



One male, Santa Cruz Island, California ; Mr. C. M. Bache. Differs from 

 P. comatus Lee. by the 10-jointed antennae, by the thorax being pilose only 

 along the side margins, more finely punctured, without any large punctures at 

 the anterior part, and by the pygidium being very finely, scarcely distinctly 

 punctured. 



A female with 9-jointed antennae, from Oregon, differs from the type of P. 

 comatus by the head being less coarsely and not confluently punctured, 

 and by the punctures and smooth ribs of the elytra being quite well marked. 

 I am not willing, in the absence of other specimens, to consider it as a dis- 

 tinct species. 



41. Cyclocephalah i rt a, oblongo-ovalis, testacea convexa nitida, pilis fiavis 

 parce vestita, clypeo confluenter punctato antrorsum sensim angustato, lateri- 

 bus anguste, apice obtuso fortius marginato; thorace latitudine duplo breviore 

 antice angustato, lateribus valde rotundatis, parce punctato, elytris punctatis, 

 vittis solitis laevibus. Long. - 50. 



One male, California, Mr. A. Murray. A very distinct species. The club 

 of the antennae is as long as the inferior portion, and the last joint of the an- 

 terior tarsi is large and tumid, with unequal claws. The frontal suture is 

 well marked ; the clypeus is confluently punctured ; the head behind the 

 suture is slightly convex, coarsely but not densely punctured. 



42. Chrysobothris v u lc an i c a, depressa subtus nigro-cuprea, supra 

 asneo-nigra, fortiter punctata, thorace brevi cicatricoso vage 3-canaliculato, 

 costis parcius punctatis, lateribus utrinque incurvis, elytris lineis solitis ele- 

 vatis interruptis, nitidis punctis paucis notatis transversim connexis, spatiis 

 depressis sat dense punctatis, cinereo-tinctis, postice serrulatis, apice singula- 

 tim rotundatis. Long. *60 - b'3. 



East of Fort Col ville. Mr. Gibbs. Allied to C. dentipes and c a 1 i f o r - 

 ni c a, with the elytra sculptured as in the latter, but with the elevated parts 

 of the thorax rugous and punctured, though not so thickly as the depressed 

 portions. 



[Not. 





