OF WASHINGTON. 323 



(restr. Schr.), neither of these terms is admissible. Latreille 

 used Zygaenides (1809), and Leach, Zygaenidae (1819) , neither 

 being admissible. Westwood and Humphrey proposed Anthro- 

 ceridae in 1857, which name should obtain. 



The American Pyromorphidae, as pointed out by Hampson and 

 Packard, cannot rightly be separated as a family from the Anthro- 

 ceridae. This separation was made by Smith in an effort to bring 

 some order out of the jumble of forms associated under the term 

 Zygaenidae by Packard and Grote, and was followed by Neu- 

 moegen and Dyar, who gave as a diagnostic character the pres 

 ence of but seven veins in the hind wings. But this does not hold, 

 and is not of family rank in those forms that show it, since it is 

 caused by the disappearance of vein 6. Comstock and Hampson 

 describe this condition as produced by the coalescence of veins 

 6 and 7, but I do not see any proof of this in the material before 

 me. It looks rather like an obsolescence of vein 6, as takes place 

 with vein 5 in other groups. This seems best shown in Tri- 

 procris smithsonianus, where there is a wide space between veins 

 5 and 7, with a fold in the position of vein 6, and even a slight 

 irregularity in the cross-vein at its proper position of origin, though 

 there is no trace of the vein itself. If it were a case of coalescence, 

 I should expect to find some of our species with veins 6 and 7 

 stalked, or at least approximate at origin. 



The Anthroceridae belong to the Tineoidea, as the wings have 

 vein ic present. The frenulum is present, tongue well developed, 

 middle spurs of hind tibiaa obsolete, antennas pectinate in our spe 

 cies, the tip slightly thickened or flabellate. Vein 8 of hind wings 

 is joined to the cell at outer two-thirds or end, and the upper border 

 of the cell is often weak. The larvae are flattened, elliptical, with 

 small retracted head, the tubercles converted into low warts, tuber 

 cles i and ii, iv and v united. This type of structure is carried to 

 its fullest development in the Cochlidiidae, which these larvae 

 somewhat resemble. Our species fall in Kirby's subfamily An- 

 throcerinas, or Hampson's Chalcosiinas. 



Family ANTHROCERIDyE Westwood and Humphrey. 



Sphinx adsita Linnaeus (part), Syst. Nat., p. 495, 1758. 



Zygcena Fabricius (part), Syst. Ent., p. 550, 1775. 



Anthrocera Scopoli, Introd. Nat. Hist., p. 454, 1777. 



Adscita Retzius, Gen. Spec. Ins., 8, p. 35, 1783. 



ZygfEtia Schrank (part), Fauna Boica, n (i), p. 236, 1801. 



Zygcena Latreille (part), Hist. Nat. Gen. Part. Crust. Ins., in, p. 402, 



1802. 



Zygcence Hu'bner, Tentamen, 1806. 

 Chrysaores Hiibner, Tentamen, 1806. 



Latreille (part;, Gen. Crust. Ins., iv, p. 212, 1809. 



