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Vol. XXXIX. LONDON, FEBRUARY, 1907. No. 2 



NOTES ON CHALCOLEPIDIUS AND THE ZOPHERINL 



BY THOS. L. CASEY, WASHINGTON, D. C. 



The species and subspecies of Chalcolepidins having the side margins 

 of the upper surface densely clothed with white or whitish scales, are very 

 numerous in Arizona and northern Mexico, constituting one of the char- 

 acteristic northern types of the genus. The recent appearance of a paper 

 by Dr. Otto Schwarz (Deutsche Ent. Zeit., igo6, p. 97), describing two of 

 these forms, has suggested the general revision here attempted, although, 

 after careful study of these descriptions, I am forced to the conclusion 

 that substriatus is nothing more than a slight modification of the typical 

 Webbi, Lee, in which the lateral white vittse of the pronotum are some- 

 times transversely coalescent at the middle of the length, and that 

 parallelus is identical with tartarus Fall. Most of the new forms here 

 described were taken by Prof. F. H. Snow, in the course of his many 

 . fruitful expeditions to Arizona. 



Because of the want of data which might in any way enable me to 

 determine or even infer their true relationships with the material at hand, I 

 have tentatively assumed all the forms described to have the weight of 

 species, not attempting to indicate those that may prove ultimately to be 

 more properly subspecies. A kw new Mexican species are also included 

 in the following table : 



~i. Scutellum triangular, flat, deflexed and evidently notched anteriorly.. 2 

 Scutellum triangular, deflexed but not evidently notched anteriorly; 

 antennae pectinate in the male, serrate in the female, the third joint 

 but little longer than the second, the fourth longer than the two 

 preceding together ; body uniformly and more or less densely 

 clothed with brilliant bluish, greenish or coppery squamules, except, 

 as usual, along a denuded median line on the under surface ; form 

 narrow, elongate, parallel, only moderately convex, black, shining, 

 the basal angles of the prothorax not or only very feebly everted ; 



descriptions drawn from the female 18 



Scutellum transverse, suboval, biiinpressed, not emarginate anteriorly; 

 body uniformly clothed with minute close-set olivaceous squamules; 

 antennae serrate in both sexes ; tibise not ciliate in the male .... 20 



