1864.] 323 



Congeneric with Parathyris torrefacta^ A. & S.. and the second de- 

 sei'ibed North American species of the genus. 



A single 9 specimen in good preservation kindly collected for me by 

 Mrs. S. A. Darrach, at Coldenham, Orange Co., N. Y. 



Genus HETEROCAMPA, Doubleday. 

 Heterocampa leptinoides, nov. sp. (Plate 4, fig. 2. J.) 



Anterior wings dark cinereous, all the lines obsolete, a basal parallel 

 black line, terminal spaces light grey. From the base of the wing a 

 narrow distinct black streak runs parallel with the costa, below the 

 median vein to median space, which latter is faintly greyish from along 

 the costa to median vein. The transverse anterior lines are hardly 

 visible, acutely dentate ; discal spot black, moderate ; veins in the ter- 

 minal half of the wing marked with black interrupted with grey; trans- 

 verse posterior lines indistinct, dentate. Subterminal space showing a 

 brownish shade, blackish outwai-dly superiorly, with black cuneiform 

 marks between the veins. Terminal space showing a light grey shade, 

 broadest at apex. Posterior wings dark cinereous, immaculate. Under 

 surface of both wings blackish cinereous, except in the terminal spaces 

 which are light grey on both pair. Thorax, legs and abdomen cinere- 

 ous, latter paler; tarsi annulated. 9 Exp. 1.07 inches. 



Hah. Middle States. (Coll. Ent. Soe. Phil.) 



A similarity of ornamentation to the Cymatophorid genus Lrph'na 

 induces the specific name. This species was collected for me by a kind 

 friend iu the same locality with the preceding. 



Genus NOTODONTA. Ochs. 

 Notodonta stragula, Grote. 



A 9 specimen, taken in Orange (;Ounty, N. Y., now in the extensive 

 collection of Stephen Calverley, Esq. of Brooklyn, L. I., does not differ 

 from the % , except in the darker, more evenly colored secondaries. 



ARCTIOIDEA, H-S. 



Genus AECTIA, Schk. « 



Arctia Saundersii, Grote. (Plate 4, fig. 3. % .) 



Arctia Saundersii, Grote, Proc. Ent. Soc. Phil., Vol. 3, p. 75. % . 



Arctia virgincula, Saunders, Syn. Can. Arct. p. 9. 



I have five male and two female specimens before me, kindly sent 

 me by Mr. Wm. Saunders. The 9 merely differs from the % by the 



