116 PROCEEDINGS OF THE ACADEMY OF [March, 



The vertical distribution of the form extends from as low as 

 454 feet (Meredosia, Illinois) to as high as 5000 to 6500 feet (Maple 

 Peak). Northward it is known only from relatively low eleva- 

 tions (2515 feet; Forsyth), while in Nebraska it occurs up to about 

 4500 feet (Glen) and in Colorado to at least 5069 feet (Laporte). 



The present form is seen to be a Great Plains and Great Basin 

 type, spreading eastward in suitable environments under satis- 

 factory temperature conditions. 



Biological Notes. — Grassy patches and stretches of sparse short 

 grass are frequented by this form, these in a variety of situations, 

 i. e. on bench of the Great Plains (Forsyth and Julesburg), on 

 river plain and adjacent sand-hills (North Platte), on the slopes 

 of hills and foothills (Kearney and Salt Lake City) and on gently 

 rolling plains (Syracuse). 



The available data shows the species occurs adult as early as 

 July 8 and as late as September 14, at the same locality (Rocky 

 Ford, Colorado) . This locality is very near the southern limit of 

 typical material of the form, and therefore probably represents 

 the region of maximum summer conditions within the form's range. 

 From the more northern region the earliest date we have is July 27 

 (Forsyth), but the deficiency of data prevents us from giving any 

 late records from the same region. 



Remarks. — This typically very distinct race is the northern adap- 

 tation of Menniria maculipennis, intergrading, as already shown, 

 into true macuUpennis in Kansas and Oklahoma, the north Texas 

 material being much nearer typical maculipeniiis than m.macclungi. 

 Its relationship to the large south Texan macuUpennis has never 

 been clearly indicated in the past, and material of the present 

 form has almost invariably been recorded as hivittata, to which 

 species macclungi is not closely related. 



We take great pleasure in dedicating this interesting and striking 

 form to Dr. C. E. McClung, of the University of Pennsylvania, 

 who, from cytological evidence, first called our attention to this 

 race, and also to the distinctness of true hivittata from the other 

 forms with which it had been confused and associated. 



Specimens examined: 113; 56 cf, 55 9,2 immature 9 . 



Montana: Glendive, Dawson Countv; 1 9 ; [Hebard Cln. ex 

 Bruner]. Forsyth, Rosebud County; VII, 27, 1909; (H.; in can- 

 yon in bench of plains); 15 cf, 2 9, type, allotype and paratypes. 



Nebraska: Valentine, Cherry County; (L. Bruner); 2 cf' ; 

 [Hebard Cln. ex Bruner and U. S. N. M.]. Chadron, Dawes 

 County; (L. Bruner); 1 cf, 1 9; [Hebard Cln. ex Bruner and 



