24 NOTES ON SOME SPECIES. 



The autliors fell into tlie >;imc error with regard to Arctia Partlieiios, Harris, and Arctia 

 Jiorea'iis, Moschler, whicli arc likewise .synonyms, Harri.s' name being nuich the older ; this 

 can easily be seen by comparing examples of Parthenos with fig. 3 on plate f* of A'ol. IV., 

 Weill. Ent. Monat. 



Eresia Sydra, Reak. Proe. Acad. Nat. Sc, Phil., 18G0, p. 335, n, 36, is Ercsia Ace.sas, 

 Hew. I. c. f. 48, 40. 1804. 



Arctia Americana, Arctia Caja. 1 never had much faith in the genuineness of Harris' 

 Arctia Americana, but before I had given the matter much attention I thought the white col- 

 lar would seem to be entitled to some value as a specific distinction. Dr. Harris who described 

 A. Americana says : " This moth closely resembles the European Caja, and especially some of 

 its varieties, from all of which however it is essentially distinguished by the w^hitc edging of 

 the collar and .shoulder covers and the absence of black lines on the sides of the body." As 

 far as the examples of Americana and Caja in my possession go, the above amounts to nothing ; 

 four e.Kamples of Caja are before me ; the first, from Saxony, expands 2\ inches, has the collar 

 edged with red, patagia^ narrowly edged with white on outer edge ; five brown spots on side of 

 abdomen and five ou back. 



The .second, from Osterode-ani-Harz, expands 2] inches, has collar edged with red, no 

 white whatever on patagia^ ; no marks of any Icind on sides of abdomen, four black spots on 

 back ; the blue spots on secondaries of this example arc very small, with the exception of two 

 near the exterior margin ; they are little more than dots. 



No. 3, from England, expands 2J inches, has front edge of collar and aider edge of patagia- 

 rchite ; five very small black spots on side of abdomen and four large ones on back. Primaries 

 of this example have the brown markings very narrow; there is as much white as brown. 



No. 4, from S. France, expands 2| inches, front edge of collar red, outer edge of patagia- 

 narrowly white ■ abdomen, except the segment nearest the thorax, black above, on sides and 

 below, a little red on sides, hair on sides of anal segment red ; in this specimen the primaries 

 are very dark brown with but little white ; secondaries very dark orange with spots of un- 

 usually largo size, tho.se nearest the base confluent forming a band. 



Of my examples from British America, the one expands 2^ inches; collar and outer 

 edge of patagia; white ; no spots on sides of abdomen ; s/.c black spots on back; primaries 

 with but little white ; secondaries have four very large spots, three sub-marginal and the 

 other half way between these and the base. 



The other example expands 2^ inches, has collar white ; outer edge of patagiie narrowly 

 white; faint indications of five sjjots on sides and five black spots on back of abdomen; 

 brown and white of primaries in same proportion as in ordinary forms of Caja ; spots on 

 secondaries likewise. 



I wrote to Mr. Moschler in Germany, concerning Caja and Americana, he says in reply 

 " In my collection are IG Arct. Caja from here* S examples hare distinct white collars exactly 

 like my examj)lcs from N. America, Caja and Americana arc surely one species. " And I 

 must .say that I agree with his conclusion. 



*Germanv. 



