33 



shoot and sometimes more than one secondary shoot, but usually only 

 forking close to the tip (?) or irregular, deflected from a regular 

 course (6); intercalary longitudinal veins of anal area extending 

 fully half way toward the base of the wings. Abdomen compar- 

 atively slender; outer surface of hind femora flat or barely convex ; 

 terminal segment of the male nearly as narrow at base as at tip, 

 greatly produced and tapering, compressed into a dull carina along 

 the lower edge. 



1. T. dux (Drury) Scudder. 



Gryllus dux Drury, lUustr. Nat. Hi»t., II, pi. 40. 

 " " Fabr., Sp. Ins., I, 362 (in part?). 



" " " Ent. Syst., II, 47 (in part?). 



'< " " Mant. Ins., 235 (in part?). 



" " Gcetze, Eat. Beitr., II, 102. 



Gryllus {Locust a) dux Stoll', Repr. des Spectres, etc., Saut. d. 

 Pass., 6, 7, pi. I^fig. 1. 



Acridium dux Oliv., Encycl. Meth., VI, 215, pi. cxxvi, fig. 1. 

 " " Latr., Gen. Crust, et Ins., Ill, 105. 



" " Flor, V. Sivers, Antill. xii. 



Locusta dux Dune, Introd. Entom., 257, pi. xv, fig. 2. 



" (Rutidoderes) dux Westw., Drury, Exot, Ent., II, 92, pi. 

 XLi V (in part) . 



Gryllus cristatus Thunb., Mem. Acad. St. Petersb., V, 224; IX, 402. 



Acrydium Latreillei Fitch, Trans. N. Y. St. Agric. Soc, XVI, 

 507. Third Rep. Nox. Ins., 172, pis. iii, I v. 



Pronotal crest tipped with black (perhaps greenish black in life) ; 

 first and second lobes as distinct as the others ; on the posterior half 

 of the pronotum the crest anteriorly is elevated considerably, — more 

 than in the allied species. Tegmina greenish griseous, the veins 

 luteous and luteo-fulvous, variegated with pale blotches, small and 

 frequent on the basal half, confluent about the middle and apically, 

 forming very irregular, rather broad and distant, zigzag bands parallel 

 with the outer border. Wings brick red, rather broadly bordei'ed with 

 black at the hind margin, and furnished with multitudinous black 

 spots over the whole wing ; these spots are ordinarily quadrate, trans- 

 verse, but near the middle of the outer border they become confluent, 

 forming wavy bands along the longitudinal veins ; and toward the 

 inner border they form confluent or broken bands subparallel to the 

 hinder border; these spots are less frequent, and often very indistinct 

 in the 3 . Hind femora externally ornamented with a double row of 

 roundish or oval spots, merging into one toward the apex ; hind tibife 



