36 



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

 J02. 

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



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



" " " Orthopt., C53. 



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



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



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

 151. 



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

 XLiv (in part). 



GrijUus {Locusta) cristatus (var. alse in aliis antice rubrte) Linn. 

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

 Not A. dux Drury. 



Tbe fi-ont lobe of crest sborter tban the others ; the three followinof 

 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 tubercular 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 principfil vein, and especially that along the upper edge of the 

 anal area, growing smaller, and lading out before i-eaching the base ; 

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

 dom ct!t 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 quadrate whitish spots 

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

 spines greenish with black tips. 



The descriptions cited from Fabricius apply 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. Fabricii, 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 Fabricius ? Neither seems unlikely. 

 Expanse of tegmina, ? 182-187 ■""• S 130 """' 



