28 COLEOPTERA RHYNCHOPHORA. 



wide and as long as the two following. The lengths of the 

 funicular joints are subject to a little individual variation, 

 and occasional specimens may prove disconcerting ; the dif- 

 ference is, however, perfectly obvious in a series. Again, 

 the elytral interspaces in males of lecontei and in both sexes 

 of the related species show a single line of interstitial punc- 

 tures with rarely any marked tendency toward irregularity ; 

 in females of lecontei, however, the interspaces are unusually 

 wide, the interstitial punctures small, and on several of the 

 intervals form confused or double lines. 



Three color varieties are thought worthy of distinctive 

 names. 



Prothorax dark purplish-blue, elytra violaceous, varying to entirely 



brilliant green siiperba new var. 



Color entirely black tenebrosa new var. 



Black, elytra dark blue or bluish-black tiiictipeiiiiis new var. 



The former {superba) is known to me from Arizona (type 

 cf from Prescott), the second {tenebrosa) , type sex doubtful, 

 from Porvenir, New Mexico, Colorado and California ; the 

 last from Cloudcroft, New Mexico, and Williams, Arizona. 

 Of these tinctipennis is most aberrant, and may possibly prove 

 distinct; there seems, however, to be a gradual approach to 

 the typical form. 



M. COilvexicollis u. sp. — Smaller and a little narrower than 

 lecontei, cuneiform, black, the elytra bluish, moderately shining. 

 Beak (c?) longer than the prothorax, strongly evenly curved, punc- 

 tured as in lecontei. Antennae inserted at basal two-fifths of the beak, 

 second funicular joint distinctly less than twice as long as wide and 

 shorter than the two following together. Prothorax strongly longi- 

 tudinally convex, fully as long as wide, sides broadly nearly evenly 

 rounded, not much more strongly so in front ; apical constriction 

 feeble, surface densely rather coarsely punctate without trace of 

 smooth median line. Elytral striae well impressed, intervals rather 

 narrow and convex, each with a single line of moderately strong punc- 

 tures. Body beneath as in lecontei, the hairs more uniformly com- 

 pound. Femoral tooth acute but not large. Length 3) mm. ; width 

 1.35 mm. 



Type. — c? ; San Bernardino Mountains, Southern Califor- 

 nia ; 5000 feet. 



