SOME NEW SPECIES OF CERITRA. 



black lines (the inner of the three sometimes obsolete), preced- 

 ing the abbreviated blackish subterminal band the band 

 usually terminating at the second median nervule (vein 3). 

 The nine marginal intra nervular black spots smaller than in 

 borealis, but larger than in aquilonaris. 



Secondaries white, with traces of the inner margin of an 

 outer border, mainly seen on the nervules and at the anal 

 angle, and sometimes with indications of a mesial band behind 

 the obscure discal spot. 



Beneath : primaries as above, but less distinctly marked ; 

 secondaries with a large discal spot. 



Described from 7 $> 's and 6 ? 's from the Collections of the 

 Buffalo Society of Natural Sciences, Messrs, von Meske, Hill, 

 Kiemann, Tepper, Strecker, Kuetsing and Lintner. 



Habitat. From New York, Pennsylvania, Wisconsin and 

 Canada (Montreal). It will probably be found to extend 

 throughout most of the eastern portion of the United States. 

 It has not, to my knowledge, been observed west of the Miss- 

 issippi. 



The above insect may be found in nearly all the principal 

 collections of the country, under the name of Cerura borealis, 

 it being the one which was described by Dr. Harris in his 

 Report on the Insects of Massachusetts, 1841, p. 306, and 

 referred by him to the borealis of Dr. Boisduval. The de- 

 scription is as follows : 



" The ground-color of our moth is dirty white ; the fore-wings 

 are crossed by two broad, blackish bands, the outer one of 

 which is traversed and interrupted by an irregular, wavy, 

 whitish line ; the hinder margins of all the wings are dotted 

 with black, and there are several black dots at the base and 

 one near the middle of the fore-wings ; the top of the thorax 

 is blackish, and the collar is edged with black. In some indi- 

 viduals the dusky bands of the fore- wings are edged or dotted 

 with tawny yellow ; in others [Cerura cinerea] these wings 

 are dusky, and the bands are indistinct. They expand from 

 one inch and three-eighths to one inch and three-quarters." 



The extrabasilar .straight row of five spots readily distin- 

 guishes this species from borealis and cinerea (but not from 

 aquilonaris) and ally it with furcula and bifida of Europe. 

 It is usually of a smaller size than our other species. 



