24 
NOTES ON SOME SPECIES. 
The authors fell into the same error with regard to Arctia Parthenos, Harris, and Arctia 
Borealis, Moschler, which are likewise synonyms, Harris’ name being much the older ; this 
can easily be seen by comparing examples of Parthenos with fig. 3 on plate 9 of Vol. I\ ., 
Mein. Ent. Monat. 
Eresia Sydra, Reak. Proc. Acad. Nat. Sc., Phil., 1866, p. 335, n. 36, is Eresia Acesas, 
Hew. 1. c. f. 48, 49. 1864. 
Arctia Americana, Arctia Caja. I 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 white 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 examples of Caja are before me ; the first, from Saxony, expands inches, has the collar 
edged with red, patagiae narrowly edged with white on outer edge ; five brown spots on side of 
abdomen and five on back. 
The second, from Osterode-ain-Harz, expands 2J inches, has collar edged with red, no 
white whatever on patagiae ; no marks of any kind on sides of abdomen , four black spots on 
back ; the blue spots on secondaries of this example are very small, with the exception of two 
near the exterior margin ; they are little more than dots. 
No. 3, from England, expands 2f inches, has front edge of collar and outer edge of patagkv 
■white ; 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 2f inches, front edge of collar red, outer edge of patagiee 
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 large size, those nearest the base confluent forming a band. 
Of my examples from British America, the one expands 2| inches ; collar and outer 
edge of patagise white ; no spots on sides of abdomen ; six 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 2f inches, has collar white ; outer edge of patagiae narrowly 
white ; faint indications of five spots 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 
u In my collection are 16 Arct. Caja from here* 2 examples have distinct white collars exactly 
like my examples from N. America, Caja and Americana are surely one species. ” And I 
must say that I agree with his conclusion. 
^Germany. 
