Scudder.] 350 [February 24, 



Gryllus dux Thunb., Mem. Acad. St. Petersb., IV, 225; IX, 393, 

 402. 



Acridium dux Oliv., Encyl. meth., VI, 215? 



" " Serv., Ann. d. Sc. nat., XXII, 283. 

 " " " Ortbopt., 653. 

 " " Burm., Handb. d. Ent., II, 628. 

 " " BruUe, Hist. nat. d. Ins., IX, 225, pi. xx. 

 " " De Haan, Verb. Nat. Gescb. Ned. Bezitt., Zool., 144, 

 151. 



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

 XLiv (in part). 



Gryllus (Locusta) cristatus (var. alas in aliis antice rubrte) Linn. 

 Mus. Lud. Ulr. Reg., 137, No. 28. 



Not A. dux Drury. 



Tbe front lobe of crest sborter than the others ; the three following 

 equal, rounded, not greatly but regularly arched ; posteriorly the 

 crest diminishes rapidly, consisting, as it were, of a single posteriorly 

 elongated lobe, elevated anteriorly and slightly tubei'cular on the 

 ridge. Tegmina dark green with paler veins. Wings brick red, 

 greenish at the apex in the ? , with a narrow posterior margin of 

 black and recurrent rows of quadrate and rounded spots following up 

 the princijDal vein, and especially that along the upper edge of the 

 anal area, growing smaller, and fading out before reaching the base ; 

 the spots are generally seated upon the principal veins, but are sel- 

 dom cut by the cross veins; in the $ the black is absent from all 

 but the anal area, excepting at the outer margin. Hind femora 

 ornamented externally with a double row of c^uadrate whitish spots 

 usually united into one at an angle ; hind tibias pale greenish, the 

 spines greenish with black tips. 



The descriptions cited from Fabriclus apjjiy best to this species 

 because he speaks of the tegmina and prothorax as greenish ; in all 

 other particulars, the description would answer equally well for this 

 and for T. dux. It is also more likely that he saw specimens from 

 Brazil, the home of T. Fabi-icii, than from Central America, the 

 home of T. dux. He speaks of his specimen or specimens as coming 

 from meridional America, and as seen in the Banksian Museum ; may 

 it not then have been Drury's original specimen? or were there other 

 specimens of this species and of T. dux, or of this species only, and 

 were the two confounded by Fabriclus ? Neither seems unlikely. 



Expanse of tegmina, $ 182-187 """• S 130 ""• 



