1913.] NATURAL SCIENCES OF PHILADELPHIA. 487 



the limbs and with intermediate channel of tegmina and exposed 

 portions of wings tawny olive. Under portions of insect pale tawny 

 olive. Maxillary palpi yellowish, the extreme apex of the terminal 

 segment very narrowly marked with very dark brown. The majority 

 of the specimens from the arid and semiarid portions of the range 

 of the insect are somewhat darker than the type, the general color 

 being Vandyke brown, and in some of these individuals the occipital 

 markings described under carolinus are faintly apparent. There 

 are very few brachypterous females from this portion of the distribu- 

 tion of the race, and all of these but one are in a poor state of 

 preservation. The specimen from Brownsville, Tex., in good condi- 

 tion, shows the color pattern of the exposed dorsal surface of the 

 abdomen similar to that of typical carolinus. 



The majority of the specimens from the state of Vera Cruz resemble 

 carolinus closely in coloration and color pattern, but are almost 

 without exception more russet. The few specimens from that region, 

 which differ from these in coloration, are colored much as in typical 

 carolinus neomexicanus, and all have the ovipositor as is typical in 

 that race. 



With scarcely an exception, the limbs of the specimens before us 

 are immaculate. The maxillary palpi have the dark marking of 

 the apex of the ultimate joint invariably exceedingly narrow. 



Distribution. — The present insect is known from the more arid 

 regions of the western United States, southward to the state of Vera 

 Cruz, Mex., and Costa Rica. The most northern localities at which 

 it has been taken are Shovel Mountain, Tex., Jemez Hot Springs"^, 

 New Mex., and Florence, Ariz. From Shovel Mountain, Tex., it is 

 found south to the Gulf coast and is checked in its eastern distribu- 

 tion by this boundary. The most southern locality is Costa Rica, 

 while it appears to be only limited in its western distribution by the 

 Pacific coast. 



Biological Notes. — All we know of the life of the present race has 

 been learned from material taken in the southwestern United 

 States. There the species appears to enjoy a wide but rather local 

 distribution. It was very seldom found by us in any numbers, and 

 occasional macropterous specimens attracted to light were the usual 

 indication of the presence of the species. We have found it but once 

 in the brachypterous form, then .it was not extremely scarce, but 

 very difficult to capture, in low irrigated grass near the station at 



" These specimens are intermediates between this race and typical N. carolinus. 

 32 



