896 THE CANADIAN ENTOMOLOGIST. 



fascia, which is sometimes even, but often irregular, its arms less anteriorly 

 oblique than in j signata, sometimes with a small post-humeral spot also, 

 the oblique post-median spot thinner and the subapical smaller, sotnetimes 

 subobsolete ; ground colour bright scarlet. Length, 5.4-5.6 mm.; width, 

 3.3-3 7 mm. Colorado (Eldora and Boulder Co.). 



In LeCoutei, of which I have specimens from the type locality, New 

 Mexico, the head always has a ihomboidal central pale spot as m 

 ^-signata^ bat the thoracic margins are broadly white at apex and base, 

 though broadly subinterrupted at the middle by an abrupt spur from the 

 central blick area. There is less generally a subbasal fascia, and, when 

 it occurs, it is more bilaterally attenuated. An allied form before me from 

 Utah to Washington State, but probably specifically distinct and evidently 

 a form frequently confounded with LeContei, may be distinguished readily 

 by the broad entire white band on the head, from one eye to the other ; 

 tliis is constant in all my specimens. iMulsanti, of LeConte, from Lake 

 Superior, the type locality, to Colorado, is a more northern form, with 

 heavier subbasal marks, which frequently form a fascia, and this is no 

 doubt the form frequently confounded \s\\h. ^-signata, as intimated above. 

 The following might be regarded as another subspecies of LeCo?itei : 



H. ahduceiis, n. subsp. — Much larger than LeContei^ almost similarly 

 marked, except that all black marks on the elytra before the middle are 

 frequently obliterated ; pronotum similar, except that the less angulate 

 black area never completely divides the white margin, the diverging lines 

 occasionally evident, but generally obsolete ; surface slightly alutaceous, 

 the punctures very fine ; elytra before the two large posterior spots either 

 devoid of all marking, even to the virtual obliteration of the sutural dash, 

 or with a crescentiform fascia between the humeri, with but few inter- 

 mediate stages of ornamentation, the post-humeral spot always completely 

 obsolete; sixth ventral of the male without apical pit, even and entire. 

 Length, 5. 8-7.0 mm.; width, 3 7-4.3 mm. Colorado (Boulder Co.). 



The general habitus of that form of abducens with obliterated ante- 

 median marks, strongly recalls the eastern glacialis, but it may be 

 distinguished readily by its narrower form and feebly developed or 

 obsolete diverging thoracic lines, besides differences in sculpture. 



Veniix is a much smaller and narrower form, specifically different 

 from LeContei in having the very large rhomboidal frontal pale spot more 

 or less narrowly extending to the sides of the head and enveloping the 

 anterior parts of the eyes ; subsimilis may be held to be a subspecies. 



