238 entomological news. [December, 



Eastward of Mojave, about sixty miles, lies Barstow. A year 

 before my above-related experience I had stopped off at the 

 latter place for a day's work in the middle of August with some 

 results in the way of entomological booty. A few pools of water 

 were then to be found in the river-bed, giving one a chance at a 

 somewhat more varied fauna and the few cottonwoods lining the 

 banks also yielded some things. I took about twenty-five 

 species of beetles, which may be mentioned as follows : Cnemi- 

 dotus simplex, Laccophilus decipiens, L. mexicanus, Deronectes 

 striatellus, Rhantus binotatus and Berosus punctatissimus in 

 pools. Tecnophilus croceicollis, Triorophus lavis, Edrotes 

 venlricosus, a Coniontis near opaca, Eiirymelopon convexicolle, 

 E. cylindricum, Eleodes quadricollis , Ulus crassus. Blapstinns 

 pubescens and Eucyllus vagans under logs and rubbish. Cicin- 

 dela pacifica on a muddy flat. Epierus regularis, var. vicinus, 

 Hololepta populnea, Hesperobcenus abbreviatus and a Cossonus 

 from beneath cottonwood bark. Around roots of weeds a few 

 Dinocleus molitor. On flowers, one Hippodamia convergent, one 

 Pyropyga fenestralis and a lot of Nemognatha near apicalis. 



A NEW CHALCOLEPIDIUS. 



By H. C. Fall. 



Among a lot of Chalcolepidius webbii taken by me in July, 

 1895, at Yuma, were two examples — $ $ — which appeared 

 different from the rest of the catch, and were set apart for further 

 developments. On examining a large lot of Chalcolepidius 

 received the past summer from Phoenix, Ariz., by Dr. H. G. 

 Griffith, many of the specimens were at once recognized as being 

 like my Yuma pair, and renewed examination shows it not only 

 to be quite distinct from webbii, but also from any of the de- 

 scribed Mexican forms. As specimens are soon likely to be 

 quite generally distributed, it deserves to be formally introduced, 

 and this may best be done by comparing it with webbii, to which 

 it bears a general resemblance. 



C. tartarus n. sp.— Generally smaller, more parallel and less convex 

 than webbii, the border of white scales much narrower throughout. On 

 the thorax this border does not encroach on the disk as is the case in 

 well preserved webbii, but is sharply limited within, and less than half as 

 wide as the central darker area. On the elytra the white border is 

 strictly marginal at base, but becomes submarginal behind the middle. 

 The elytra are more strongly striate than in webbii, the striae punctured 



