NOTES ON SOME UNITED STATES SPECIES. 



It is possible that Tryxalisbrevipennis does not belong here; but, being 

 found in a l)oftle of insects collected in Florida by Professor Glover, I have 

 ventured to place it in our fauna. 



Mesops chlorizans is an extreme southern form, Florida being the only 

 place at which it has been found in the United States It is quite probable 

 that it is identical with Opomala mexlcana, Sauss. O. aptera, Scudd , and O. 

 hrachyptera, Scudd., are the only northern species of the latter genus, which, 

 as a whole, is southern. It is also worthy of notice that the northern species 

 have the organs of flight much abbreviated or partially wanting. 



The species of Pyrgomorpha are southern, Tennessee being the most 

 northern and western locality at which they have been found. 



Chrysocliraon extends from Canada into the Southern States and as far 

 west as the Rocky Mountains, but C ahdominalis, Thos., is the only species 

 that has been observed west of the plains. The genus, as a whole, appears 

 to be northern. 



Acrolophilus and Pcdloscertetes are western forms, the former being con- 

 fined chiefly to the eastern base of the Rocky Mountains from the southern 

 border of Colorado to Central Wyoming ; the latter has been found only in 

 the southeast part of Nevada. 



Stenobotkrus is represented throughout the greater portion of North 

 America; S. curt'ipcnnis, Scudd,, appears to be more widely distributed than 

 any other species, extending from New England in the east, and Red River of 

 the North in the central portion, south into the Southern States, and west to 

 the Rocky Mountains. S. admirahUis, Uhl., is confined chiefly to a middle 

 belt running west from Eastern Maryland to and even upon the plains of 

 Kansas; it is possible* it is found in the Southern States. 



Stetheophyma has been observed only in the northeast and at the Red 

 River settlements of British America. 



Tragocephala is not a well-defined genei;ic form ; standing between the 

 two chief divisions of the CEdipodmii it partakes somewhat of the characters 



