84 PROCEEDINGS OF THE ACADEMY OF [March, 



Oklahoma. The minimum is found in material from the northern 

 limits of the range and inland from the eastern coast, at what is 

 the interior limit of the species in that region. The peninsular 

 Florida individuals show, as a whole, a faint reduction in size 

 compared with north Floridian specimens. 



Color Notes. — The coloration of this species is distinctive when 

 compared with most of the others in the genus, although certain 

 individuals of neo-mexicana are very similar. The latter can, 

 however, be readily distinguished by the structural characters. 

 The base color in alacris ranges from dull lemon chrome to oil 

 yellow and courge green, rarely as dull as sulphine yellow (only 

 in the material from Elkhart, Texas), the abdomen always clearer, 

 purer and more decidedly yellow. The dark bars range in tone 

 from dragon's-blood red to garnet brown, rarely to liver brown 

 and chestnut-brown. The dark markings on the head and pro- 

 notum may be of similar depth or those on the head may be dis- 

 tinctly paler and less sharply marked. The usual dark medio- 

 longitudinal line on the head, pronotum and sutural margins of 

 the tegmina may be strongly and uniformly marked, in fact almost 

 as decided as the lateral bars, may be obsolete on the head yet 

 distinct on the pronotum, or may be completely absent except 

 for a narrow lining along the median carina of the pronotum. 

 We find that the maximum reduction of the medio-longitudinal 

 bar is generally accompanied by a slight weakening of the lateral 

 bars, i. e., the specimens having I'udimentary medio-longitudinal 

 bars show relatively weaker lateral bars. The tegminal continua- 

 tion of the dark bar is broad and unbroken by a pale humeral 

 line in one extreme condition, while in the other extreme the dark 

 bar on the proximal portion of the tegmina is narrower than the 

 humeral pale line, and distad it is weaker and suffuses but about 

 one-half of the width of the discoidal field. The face varies from 

 uniformly pale, except for dark lines along the lateral facial carinae, 

 to uniformly suffused with the color of the dark pattern. The 

 creamy white edgings of the dark lateral head and pronotal bars, 

 the ventral edging of the continuation of the same on the pleura 

 and the line at the ventral edge of the genge, pronotum and ventrad 

 on the pleura vary in distinctness. The immature specimens 

 show a green or (rarely) brown phase with the dark bars indicated 

 and enclosed between cream-colored callose lines. 



The palest material seen is from Alexandria, Louisiana, while 

 specimens from Pass Christian, Mississippi, strongly approach 



