188 OETHOPTEEA. 



[l. Sphingonotus eaerulans, Sauss. 



Sphingonotus carulans, var. cubensis, Sauss. Prodr. (Edip. pp. 200, 201 (1884) l ; Bolivar, Orthopt. 

 Cuba, p. 28 (1888) \ 

 Hab. West Indies, Cuba x 2 . 



This insect is not represented in the material studied by me.] 



[2. Sphingonotus jamaicensis, Sauss. 



Sphingonotus jamaicensis, Sauss. Prodr. CEdip. p. 202 (1884) \ 

 Hab. West Indies, Jamaica 1 , Kingston (T. I). A. Cockerell: 2 ; coll.L. Bruner),] 



3. Sphingonotus haitensis, Sauss. 



Sphingonotus haitensis, Sauss. Prodr. (Edip. p. 202 (1884) l ; Addit. Prodr. CEdip. p. 81 (1888) 2 ; 

 Bolivar, Orthopt. Cuba, pp. 28, 29 (1888) 3 . 



Hab. Mexico 1 , Oaxaca (Mus. Brit.), Mitla (C. C. Beam, coll. U.S. Nat. Mus.: 

 1 <$ , 1 2 )• — West Indies, Haiti, San Domingo, and Cuba 2 . 



HELIASTUS, Saussure. 



(Edipoda, Latr. (in part.). 



Heliastus, Saussure, Prodr. (Edip. p. 212 (1884) ; Scudder, Psyche, ix. p. 45 (1900). 



A characteristic Mexican and Central-American (Edipodine genus that crosses the 

 international border all the way from the Gulf of Mexico to the Pacific Ocean. The 

 species readily fall into two distinct groups — one of which is represented in arid 

 regions and the other in more or less humid districts. The described forms may 

 be separated by the annexed table : — 



Table for separating the Species of Heliastus. 



A. Pronotum with the posterior lateral angles decidedly produced down- 

 wards into a broadly rounded process. 

 b. Wings provided with a more or less distinct fuscous band. 



c. Disc of wings vermilion or rose-colour 1. sumichrasti, Sauss. 



cc. Disc of wings yellow or citron 2. guatemalce, Sauss. 



bb. Wings lacking the fuscous band . . . 3. Venezuela, Sauss. 



A A. Pronotum without the downward projecting process, the angle 

 broadly rounded. 

 b. Disc of the wings vermilion. Sexes not greatly unequal in size. 



c. Wings provided with a moderately plain fuscous band .... 4. costaricensis, Rehn. 

 cc. Wings without a definite transverse band. 



d. Hind tibiae red apically, annulate with testaceous and black 



basally. Hind femora robust 5. benjamini, Caud. 



dd. Hind tibiae infuscate throughout 6. aztecus, Sauss. 



