THE CANADIAN ENTOMOLOGIST. 273 



surface more coarsely micro-rugulose, and the marginal raised border 

 better marked ; elytra with the humeral lunule not entire and of equal 

 width throughout as in senilis, but widely divided, the posterior part 

 more inflated ; median band similarly ascending to the median line, more 

 dilated inwardly and posteriorly, with its external part tapering to a narrow 

 point of origin at some distance from the sides, and not more or less 

 expanded along the latter as it is in senilis ; apical lunule divided ; under 

 surface densely pubescent laterally throughout. Length, °, 12.5 mm.; 

 width, 5.0 mm. California (Oakland). 



In senilis the colour is obscure and blackish, with the sculpture of 

 the pronotum extremely fine and dense and more vermiculate. My 

 specimen o^senilis I know to be authentic, but it is simply labeled 

 "California/ 



A species which I cannot place very accurately at present may be 

 defined as follows ; it resembles lunalonga somewhat in general marking, 

 but has the front densely pubescent : 



C. diffracta, n. sp. — Rather narrow and convex in form, somewhat 

 shining, the. elytra duller ; coloration as in the preceding, but brighter and 

 with the elytra not margined with paler tint ; under surface blue-green, 

 with large cupreous areas anteriorly, the sides of the prostemum with very 

 long dense white hair, the sides thence to the apex with fine and sparser 

 decumbent hair ; head finely strigilate, the front with long, dense, coarse, 

 pale hairs, the labrum minutely, equally tridentate ; prothorax narrower 

 than the head, wider than long, obtrapezoidal, well impressed, scarcely 

 pubescent laterally ; elytra parallel, broadly rounded behind, finely, not 

 closely, subequally and nitidosubasperately punctate throughout, without 

 a line of fovese, the humeral lunule extending to the middle of the length 

 at inner two-fifths, subequal throughout, but irregularly disintegrated, the 

 median band transverse, approaching the humeral lunule very closely, then 

 bent posteriorly, for an equal distance, finely disintegrated throughout, the 

 apical lunule large, entire, not disintegrated. Length, $ , n. o mm.; 

 width, 4.15 mm. New Mexico (Las Vegas). 



In lunalonga and others with which this may be supposed to be 

 allied, the front is bald. . 



The following species was distributed extensively by Prof. Snow and 

 others under the name pimeriana, Lee. It evidently cannot be in any 

 way closely related to that species, however, but in the system of Mr. Leng 



