NO. 1335. WALKINGSTICKS OF THE UNITED STATES— CAUDELL. 873 



inflated, bearing beneath a deflexed subspatulate convex plate, reaching the tip of 

 the eighth segment and no broader than it; ninth segment cylindrical, equal, trun- 

 cate, bearing a pair of decurved and incurved, cylindrical but slightly clavate, lilunt 

 tipped cerci, about as long as the segment. 



Leno-th of body, male, 64.5 mm., female, 53 mm.; antenna^, male, 41 mm., female, 

 35 nmi. ; head, male, 3.25 mm., female, 3.5 mm.; thorax, male, 31.5 mm., female, 25 

 mm.; mesothorax, male, 16 mm., female, 13 mm.; abdomen, male, 30 mm., female, 

 25 mm.; fore femora, male, 18 mm., female, 15.5 mm.; middle femora, male, 14.5 

 mm.; female, 13.5 mm.; hind femora, male, 20 mm., female, 16 mm.; width of me- 

 sothorax at middle, male, female, 1 mm. 



One male, one female. Cedar Keys, Fla., June 6; Capron, Florida. 



The tip of the abdomen of the female is lost. 



The female from which the above description was made is evidently 

 immature, as the measurements do not at all agree with those of mature 

 individuals in the collection of the U. S. National Mnseum. The fol- 

 lowing- notes are made from a mature female collected })y Hubbard and 

 Schwarz at Cedar Keys, Florida, in the month of June: 



Color uniformly light greenish-brown, probably green in life. Ninth abdominal 

 segment slightly longer than the seventh. Supraanal plate sul)triangular, mesially 

 keded. Cerci long and slender, about as long as the last abdominal t'egment. 

 Extreme length of body from front of head to tip of cerci, 85 mm., head 4.5 mm., 

 mesothorax 19 mm., metathorax 14.5 mm., fore femora 19 mm., middle femora 16.5 

 mm., hind femora 20.5 mm., cerci 4 mm,; width of mesothorax at middle 2 nmi. 



A female specimen from Biscayne, Florida, from the Riley collec- 

 tion, which is referred to this species, is apparently much above the 

 ordinary size, giving the following measurements: Extreme length of 

 body 110 mm,, head 5.5 mm., mesothorax 21 mm., metathorax 19.5 

 mm., fore femora 27.5 mm., middle femora 21 mm., hind femora 26 

 mm.', cerci 1 mm. This specimen is but little thicker than moderate- 

 sized individuals and shows no peculiarities indicative of a new species. 



The brown color of the males of this species varies from light to 

 quite dark, and the legs, probaldy also, the body in some specimens, 

 are greenish-brown. 



DIAPHEROMERA Gray. 



Diapheromera Gray, Syn. Phasm., 1835, p. 18. 



This genus has the following characters: 



Head'smooth in both sexes, subquadrate or subcylindrical, usually 

 less than twice as long as broad and obliquely attached to the thorax: 

 antenna' much more than twice as long as the anterior femora: protho- 

 rax usually less than one-fourth as long as the mesothorax; meso- and 

 metathorax subequal in length. Body linear, especially in the male; 

 basal segment of abdomen ol)long. in male twice as long as broad. 

 Middle femora much swollen in the male, distinctly thicker than the 

 hind ones, those of the female scarcely swollen and not distinctly larger 

 than the hind ones. Posterior femora armed beneath on median line 

 near the apex with a single spine, in the male large and distinct, in the 



