131 



our specimens of L. californice. Walk. They agree absolutely in 

 both sexes, 



Arctia intermedia. Stretch. 



Mr. Stretch notes this as ''intermediate between A. virgo 

 and A achaiay In pattern, however, it seems to me more nearly 

 to resemble A. Saundersii tha.n A . achaia. 



Arctia achaia. Boisd., and var. ochracea, Stretch. PL 5, 

 Jigs. 1 8 and 2 1 . 



It seems hardly conceivable that these two insects can be con- 

 specific. The species has been reared, it is true, but the only 

 question in my mind is whether the insects figured on plate 5 

 of Mr. Stretch's book are all from the same batch of eggs. They 

 seem to me to divide thus, 18-19 achaia and 20-21 ochracea. Fig. 

 17 looks like an aberrant female of the latter. 



Knowing as one does that species are but local forms, which 

 every year shows to be more nearly allied, until whole genera 

 seem linked in one continuous geographical chain of hardly sep- 

 arable forms, it is necessary to be extremely cautious about asso- 

 ciating, under one name, any two forms not proved to be con- 

 specific. I am not speaking specially of the present species, for 

 I do not doubt that my much esteemed friend had abundant evi- 

 dence before him, but it has become a sort of mania of late years 

 with many men, especially in Europe, to call all allied forms 

 " varieties " or " sports," (for a true variety is nothing more than a 

 sport or abortion), and this mania persisted in will unquestionably 

 in a few years reduce nearly every genus to a single variable 

 species in their eyes. 



EU CHUTES COLLARIS. Fitch. 



Colorado. 



We previously only possessed a single example from Georgia. 



DIOPTID^. 



PHRYGANIDIA CALIFORNICA. Packard. 



The larva and pupa of this species exhibit no afiinity to the 

 family ZygcenidcE or to the PsycJiidce. The imago has somewhat 

 the aspect of the semi-transparent group of LiparidcB, but in 

 structure it scarcely differs from the genus Hynnina of the New 

 World family DioptidcB. The form of the body, antennae and 

 neuration are almost identical. The principal difference being 

 that the furcation of the sub-costal branches of the primaries is 

 shorter than in Hyrmina. I have no doubt whatever that the 

 genus would be rightly located in this family. 



SATURNIID^. 



HEMILEUCA NEVADENSIS. Stretch. 



The genus is, I should say, nearer to Pseiidohazis and Eochroa 

 than to anything else, although the tufted abdomen of the male 



