1919.] NATURAL SCIENCES OF PHILADELPHIA. 99 



state it is distributed to the region of the Edwards Plateau (Shovel 

 Mountain), extending south in the same state as far as Flatonia 

 and Rosenberg, while northward the range extends to northeastern 

 Nebraska (West Point) and southeastern Iowa (Keokuk). In 

 the southeastern states we do not know its interior limits, as the 

 few exact localities known are practically coastal, with the excep- 

 tion of Chehawhaw Mountain, northern Alabama, while from be- 

 tween the east coast and Texas we have but two reliable records — 

 Fort Barrancas, Florida, and Nugent, Mississippi. In Oklahoma 

 it extends as far westward as the western base of the Wichita 

 Mountains (Mountain Park), and in Kansas its westward known 

 limit is Sun City, Barber County. The only information we have 

 regarding the occurrence of the species in the central Mississippi 

 Valley is Hs capture at Keokuk, Iowa, from which evidence its 

 presence in southern Illinois would not be surprising. 



The species' occurrence within its range is now known to be gov- 

 erned by the presence of rich grasslands and it does not occur as 

 far west or as high as the Great Plains region, being entirely one 

 of the humid district. Its range in part overlaps that of macul- 

 ipennis maculipennis in eastern Texas, Oklahoma, Kansas, Nebraska 

 and Iowa, but, as maculipennis is essentially an arid land type, 

 over most of their respective territories the other species does not 

 occur. Zonally hivittata is almost entirely Austroriparian and 

 Sabalian, occuring in the Carolinian zone only in the northwestern 

 portion of its territory. 



In vertical distribution this species ranges from sea-level (Pablo 

 Beach and Fort Barrancas, Florida) to at least two thousand feet 

 elevation (Chehawhaw Mountain, Alabama, 2000 to 2400 feet; 

 St. Jo, Texas, 1140 feet; Shovel Mountain, Texas, over 1000 feet; 

 Cache, Oklahoma, 1275 feet; Mountain Park, Oklahoma, 1360 to 

 1690 feet). In Texas the lowest point represented (Harrisburg) 

 is but a few feet above sea-level. 



Biological Notes. — All the available information shows hivittata 

 to be a species frequenting areas of rich, high grass, with or with- 

 out intermingled weeds, where it is at times locally very abundant, 

 and in from distinctly maritime (Fort Barrancas and Pablo Beach, 

 Florida) to relatively hilly or at least rolling (Mountain Park, and 

 Cache, Oklahoma; Dallas and Shovel Mountain, Texas) environ- 

 ments. At Fort Barrancas it occurred in J uncus along a tidal in- 

 let, at Navasota and Flatonia its preferred habitat was in or near 

 post-oak groves or forest; at Harrisburg the grassy cover was in 



