104 IOWA STUDIES IN NATURAL HISTORY 



Biol. Cent.-Am., Ehop. II, 507, pi. 95, ff. 45, 46, 1900. 



Florida to Texas, June. Skinner lists it as occasional in New York, 

 (Cat. p. 88). St. Louis, Mo., (Knetzger). 



Ethlius is readily distinguished by its large size, the long cell of the 

 primaries, the form of the palpi and the presence of hyaline spots on the 

 secondaries. 



2. CALPODES COSCINIA 



Goniloba coscinia H.-S., Corr.-Blatt Begensb. XIX, 54, 1865. 

 ? Hesperia ares Feld., Verh. z.-b. Ges. Wien xn, 477, 1862. 



Brownsville and San Antonio, Texas, May. 



Barnes and McDunnough list ares as a doubtful synonym of coscinia 

 while Godman and Salvin in the Biologia make it a synonym without qual- 

 ification. If the two names refer to the same species, ares snould be used; 

 I know of nothing which will settle the matter at present. Coscinia differs 

 from ethlius and T. macareus in the absence of hyaline spots from the 

 secondaries. 



Genus PRENES Scudder 

 Prenes Scud., Syst. Rev. 60, (81), 1872. Type Hesperia pano- 

 quin Scud. 



Similar to Calpodes but with the wings more angular and the 

 mid tibiae without spines. Fig. 30. 



Prenes is very close to the Old World genus Pamara and may 

 fall before it. Dr. W. T. M. Forbes tells me that he is unable to 

 separate the two, and from a superficial study of the genotypes 

 I have found nothing which will differentiate them. I prefer to 

 retain Prenes, however, until I can make dissections of the type 

 of Pamara for more accurate study. 



Key to the species 



1. Secondaries with a few pale spots below 2 



Secondaries immaculate below or with pale dashes or very faint traces 

 of spots 4 



2. Upper surface powdered with yellowish scales panoquinoides 



Upper surface without yellowish scales 3 



3. A pale spot in end of cell of primaries; spots on under surface 



bluish riero 



No spot in cell ; spots below not bluish errans 



4. Two pale dashes on under surface of secondaries panoquin 



Usually immaculate; never with dashes ocola 



1. PRENES NERO 



Hesperia nero Fab., Ent. Syst., Supp. 433, 1798. 

 Hesperia nyctelius Latr., Enc. Meth. ix, 746, 1823. 



