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not present in Psyche or in Thyridopteryx. In the hind wings, however, 

 there are the same numher of veins as in Psyche confederata and carbonaria. 

 Platceceticus however not only differs in the venation, but has larger 

 eyes, while the front of the head is narrower than in Psyche. The species 

 may be distinguished from P. confederata by the shape of the wings ; 

 moreover the body and the wings are much paler, being mouse- 

 brown, (while P. confederata is black), with the scales less numerous or 

 thinner, and the genital plates are longer, narrower, and more pointed. 

 .Moreover the pectinations of the antenna; are shorter. The wings expand 

 18 mm., and the body is 7 mm. in length. Specimens in alcohol of the 

 larva, pupa and female are very desirable for a complete history of the genus. 



Lithosia rubropicta n. sp. 



1 . Front of the head as broad .is long.; palpi quite long, brown, scarlet 

 beneath on the basal joint. Head brown, with a scarlet occipital stripe passing around 

 the underside of the head. Fore wings dark brown, without any markings, except 

 that the costa is edged with scarlet on the basal two-thirds. Hind wings scarlet on 

 the basal half; the outer half dark brown, concolorous with the fore wings. Abdomen 

 deep scarlet above and on the sides, with a dorsal row of seven brown median spots : 

 beneath dark brown. Underside of the fore wings with the costa more broadly edged 

 with scarlet than above ; hind wings as above. 



Expanse of wings, 28 mm.; length of body, 9 mm. 



Of this fine species I captured a single specimen on the shores of the 

 Rangeley lakes, Maine, in July. It is quite unlike any other Lithosian 

 we have, as observed to me by Mr. Henry Edwards. It is a true Lithosia, 

 with the outer edge of the fore wings quite oblique, the wings being 

 broader and more triangular than in Hypoprepia or Anatolmis. The hind 

 wings are much rounder and fore wings wider than in L. casta or the 

 other known American species. It is certainly a very beautiful addition 

 to our lepidopterous fauna. 



Lithacodia graefii n. sp. 



1 . Body and fore wings deep ochreous ; hind wings yellow, unspotted. Fore 

 wings with a linear brown line, beginning on the middle of the hind edge, crossing 

 the wing obliquely outwards and forming a broad loop not reaching the costa, re- 

 turning by a course not quite parallel with the outer edge and ending at the inner 

 .ingle. On the underside this line does not re-appear ; both wings are more ochreous 

 than above. 



Expanse of wings, 12 mm.; length ot body, 5 mm. Texas. 

 This little species, the smallest of the genus, is congeneric with Z. 

 fasciola and /.. flexuosa, being closely allied to the latter species, but 

 differing in the direction of the dark line on the fore wings, and in its 

 smaller size. 



I am indebted to Mr. Edward L. Graef, for the privilege of describing 

 this species, represented by three specimens in his collection, one of 

 which he kindly gave me. On showing it to Mr. H. Edwards he regarded 

 it as undescribed. 



