Grote.l "^^^ [Doc 6, 



Tribe Thysaniini, type Thysania ngrippina : Thysania, Letis, Erebus. 



Tribe Pheocymini, type Pheocijma lunifera : Zile, Pheocyma, Pseudan- 

 thracia, Ypsia, Campometra (Eubolina), Trama, Pericyma, Selenis, Yrias, 

 Homopyralis, Matigramma, Spargaloma. 



Tribe Paagraptini, type Pangrapta decoralis : Zethes, Phalaenostola, 

 Pangrapta, Sylectra. The distinction is based on the superficial character 

 of the angulated wings ; Sylectra has a remarkable anteanal structure 

 and a vague resemblance to Scoliopteryx ; in 1809 Latreille refers it to 

 Herminia. 



Tribe Hexerini, type Uexeris enhydris : the single genus Hexeris, from 

 tropical Florida. 



Tribe Boletobiini : Boletobia, Aventia, Dyaria, Acherdoa. 



A correlation of these tribes with Guenee's families is in part possible, 

 but since I do not regard these groups as of family, or even subfamily 

 value, it is not necessary to attempt it. 



The Hypenoid Moths. 



This group is classed by me in 1890 as a subfamily of the Agrotidje 

 under the name Deltoidiute, a corresponding modification of the previous 

 terms, Deltoides and Deltoidse of Latreille and Guenee. The name Del- 

 toidinae is objectionable, however apposite, there being no genus of the 

 name from which it could be derived. I shall therefore call the group 

 Hypeniuje, from Hypeua, the tj'pical genus of a group, which is called 

 by some writers by the English term, "Snout Moths," in allusion to the 

 projecting labial palpi. These pyralidiform or hypenoid moths form a 

 tolerably compact and very interesting group, from the usual strong ex- 

 pression of secondary sexual characters. In 1890 I divided it into two 

 tribes, Herminiini and Hypsnini, and these are here retained, Mr. 

 Smith's Heliini the not being sufiiciently distinct, since the male character 

 drawn from the first joint of the front feet is analogous to the other modi- 

 fications of the appendage in the Herminiini. The term itself could not 

 be retained in any event, since it is derived from the generic term Helia 

 of Guenee, which is not only a synonym, but preoccupied also. 



My conclusions upon a study of the literature of the subfamily 

 Hypeninse are here given : 



POLYPOGON, 



1802. Schrank, Faun., Boica, ii, 162 : barbalis, tentacularis. 



The type must be taken as barbalis, although I have thought the con- 

 trary opinion tenable ; but it seems to follow from Latreille's subsequent 

 action, or rather the accepted interpretation of his action in 180i. I had 

 supposed, recently and from the quotation of 1802 to Herminia in the 

 Washington Catalogue, that Latreille's generally accepted term might 

 really be the earliest in the group. But this is not the case, and Polj'pogou 

 Schrank is the first. It would, indeed, be better to consider tenticularis 



