ACRYDII. 



571 



while the adult is yellowish brov.-n with dark patches and 

 spots. 



In Acrydium the spine on the chest is very prominent, and 

 the mesial crest above is well marked, Avhile the tip of the 

 male abdomen is not swollen. Acrydium alutaceum Harris is 

 nearly two inches long, and expands over three inches. It is 

 brownish 3'ellow, with a paler j-ellow stripe on the top of the 

 head and thorax. 



To the genus Tropidacris, separated from Acrjalium by Mr. 

 Scudder, belongs certain gigantic grasshoppers nearly four 

 inches in length and expanding some eight inches, with gaily 

 colored hind wings. T. cristata Linn, has pale, greenish blue 

 hind wings ; it is 

 reported from Asia 

 and Africa, and is 

 widely distributed 

 through tropical 

 South America. T. 

 dux Drury has brick 

 red hind wings and 

 expands nearly sev- 

 en inches ; its range 

 is from Texas to 

 Panama. 



CEdlpoda is a large 

 and well known ge- 



Fig. 5U5. 



nus, in which there is no spine between the fore legs, and the 

 front of the head is vertical and swollen. (Edipoda Caroliua 

 Linn, is pale yellowish brown, the wings black with a broad yel- 

 low hind margin, and it expands over three and a half inciies. 

 It is abundant everywhere. tE". snlplmrea Fabr. has deep yel- 

 low wings, with a broad dusky band beyond the middle, while 

 (E. Gorallina Harris has hind wings of a rich coral red. (E 

 xanthox>tera Gerniar (Fig. 065) ranges from New Enghmd to 

 the Mississippi. It is reddish brown ; the prothorax has a higli 

 rounded unbroken ridge ; the fore wings are flecked with small 

 dusky spots ; the hind wings are yellow at the base, fuscous 

 beyond and clouded at the tip; the hind shanks are dusky, 

 with a pale band belovv' the knee. The wings of the male ex- 



