4 Journal New York Entomological Society. [\oi. xxix, 



cell, also the hind margin of the pronotum or collar, whereas in apache the 

 color is light yellow or straw-color. The membranes at the base of both pairs 

 of wings are orange or at least usually much darker than in apache, where they 

 are white or light gray. Some of these differences in structure and color are 

 more clearly brought out in the illustrations. 



Measurements in Millimeters. 



Female 

 Male Type. Allotype. 



Length of body 25 25 



Width of head across eyes 10 10 



Expanse of fore wings 71 75 



Length of operculum 6.5 



In 1917, Dr. H. H. Knight and Dr. Joseph Bequaert, while in 

 Arizona, collected many specimens of this species, which were later 

 recorded by the writer in this Journal for December, 19 17, under 

 the name of Tibiccn cinctifera. As a matter of fact, only the male 

 from Del Rio, Texas, Devil's River, July 3, 191 7, was of that species, 

 all of the remainder belonging to what is here called apocJic. 



The following typical material of apaclic from Arizona is in the 

 Avriter's collection: Florence, July 29, 1917, fifty-four males, thir- 

 teen females (Dr. Knight and Dr. Bequaert) ; Black Canyon, Bumble 

 Bee, July 31, 1917, male (Dr. Knight) ; Tempe, August i, 1917. four 

 males, two females (Dr. Bequaert) ; Grand Canyon. Lower Bright 

 Angel trail. August 2, 1917, three males (Dr. Knight) ; Buckeye, 

 August 7, 1917, six males, twenty-one females on poplars along 

 irrigation ditch (Dr. Knight and Dr. Bequaert) ; Palomas. August 

 8, 1917, one male (Dr. Knight). Phoenix, July, 1913. thirteen males, 

 three females (Dr. R. E. Kunze), and July, 1914, twenty-eight males 

 and seven females (Dr. Kunze). There are also numerous examples 

 of this species in the collection of the United States National 

 Museum. Dr. Knight says of the specimens from Florence : " On 

 mesquite, song continuous, even toned, moderately shrill note." 



There are several color varieties of apache, the commonest one 

 having the body mostly brown or brownish instead of black. It 

 was at first thought that specimens having the dorsum light brown 

 variegated with pale straw-color, were immature individuals, but the 

 accumulation of considerable material has shown that this is not the 

 case. Specimens of the pale variety range all of the way in color 



