ORTHOPTERA ACRIDIDAE ACRIDIUM ALBOL1NUATUM. 897 



expedition embraces the northern boundary of the subtropical faunal dis- 

 trict. The beautiful Rhomalean species hereafter mentioned is strongly 

 confirmatory of this opinion. 



ACRIDIUM ALBOLINEATUM, sp. nov. 

 PLATE XLIII, FIG. 1. 



Very similar in form, size, and general color to A. emarginatum, Uhler, 

 and may be described by the colors, which are very marked and distinct. 



Female. Face marked with perpendicular alternate stripes of black 

 and white (or pale yellow, probably yellow when living, as the specimen 

 before me has been immersed in alcohol) ; the frontal costa black, with a 

 narrow yellow line on each margin and one in the middle, the latter not 

 distinct except above the ocellus ; a dark stripe extending downward from 

 each antenna, and each bordered each side by broad, parallel, yellowish 

 stripes. The yellow line above the ocellus is continued upon the vertex, 

 occiput, and along the middle of the pronotum and the inner margins of the 

 elytra, forming a dorsal stripe, widening posteriorly. Lower half of the 

 sides of the anterior lobes of the pronotum yellow ; a yellow .stripe from 

 the base of the elytra to the insertion of the middle legs ; and another 

 extending upward from the insertion of the posterior legs. The remaining 

 portions of the pronotum and elytra uniform light brown. Wings trans- 

 parent yellow. Anterior and middle legs yellow on the anterior (outer) face 

 and brown on the posterior (inner) face. Posterior femora with the lower 

 half of the disk white ; upper half with a black stripe from the base to the 

 middle, the outer end extending in the form of a short band over the upper 

 carina ; there is another broad black band midway between this and the 

 apex, rest yellow ; apex black with a yellow spot at the lower corner ; inner 

 face yellow, with two oblique dusky stripes. 



Dimensions. Length, 1.8 inches; elytra, 1.75 inches; posterior femora, 

 1 inch ; posterior tibia?, 1 inch. 



The colors show this species to be distinct from A. emarginatum, which 

 it resembles most. 



There is but one specimen in the collection of 1873 ; no locality given, 

 but it is probably from Arizona. 

 57 z 



