30 COLEOPTERA RHYNCHOPHORA. 



this variety from typical ausiera. In addition, the elytra 

 seem to have normally a distinct blueish or greenish lustre, 

 to be rather more widened posteriorly and to have the striae 

 more evidently impressed. The form of body is nearly the 

 same as in lecontei, but the size, color, shorter second funi- 

 cular joint, more evidently impressed striae and single regu- 

 lar series of larger interstitial punctures in the 9 , are quite 

 sufficient for its separation, even if the locality label is not 

 conclusive — as seems probable. 



M. vitiosa n. sp. — Black, lustre dull, elytra a little wider behind in 

 the cf, distinctly so in the 9. Beak subequal in length to the pro- 

 thorax (c?), slightly longer (9), moderately arcuate, closely rather 

 coarsely punctate. Antennae inserted slightly behind the middle, 

 second funicular joint short, obviously less than twice as long as wide. 

 Prothorax a little wider than long, sides subparallel in basal half, 

 rounded anteriorly with a moderate apical constriction ; punctuation 

 dense, without or with but slight trace of smooth median line near base 

 and apex. Elytral striae scarcely impressed, intervals nearly flat and 

 with single series of rather coarse interstitial punctures. Femoral 

 tooth rudimentary, nearly obsolete on the hind thighs. Length 3.1- 

 3.3 mm. 



Type. — 6^ ; Lake Tahoe, California. 



M. geiitilis Lee. 



This species was described from two examples collected 

 by Crotch at Lake Tahoe. The type is a cf , 4 mm. long, 

 and differs from vitiosa in having the elytra blueish and evi- 

 dently smoother and less dull, thorax with entire smooth 

 median line, the femoral tooth large. The second example 

 is apparently a 9 , considerably smaller and possibly not 

 identical with the cf type. The second funicular joint is not 

 quite twice as long as wide in the type and is still shorter in 

 the smaller 9 , in which it is nearly as in vitiosa. The rela- 

 tive dimensions of the antennal joints are, however, subject 

 to some individual variation and are not to be depended on 

 except in series. I am placing as gentilis provisionally a 

 number of examples taken by Dr. Fenyes at Lake Tahoe, 

 which have the second funicular joint more slender, nearly 

 or quite twice as long as wide, but which agree fairly well 

 with the type in nearly all other characters. I am also com- 



