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- 

 dohis simplex, Laccophilus decipiens, L. mexicanus, Deronectes 

 striatellus, Rhantus binotatus and Berosns punctatissimus in 

 pools. Tecnophilus croceicollis, Triorophus l&vis, Edrotes 

 ventricosus , a Coniontis near opaca, Enrymetopon convexicolle, 

 E. cylindricum, Eleodes quadricollis, Ulus crassus, Blapstinus 

 pubescens and Eucyllus vagans under logs and rubbish. Cicin- 

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

 Hololepta populnea, Hesperob&nus abbreviatus and a Cossonus 

 from beneath cottonwood bark. Around roots of weeds a few 

 Dinodeus molitor. On flowers, one Hippodamia convergens, one 

 Pyropyga fenestralis and a lot of Nemognatha near apicalis. 



-o- 



A NEW CHALCOLEPIDIUS. 



By H. C. FALL. 



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

 1895, a t Yuma, were two examples 9 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 wcbbii, 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 gnu-nil resemblance. 



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

 than r.rM/7, the border (if white scales much narrower throughout. On 

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

 \vrll preserved nrM/7, 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. 

 '1 IK- elytra are more strongly striate than in r<:r<V>/7, the stria; punctured 



