130 Twenty-fourth Report of the State Museum. 



lets of the following segment (over three on the seventh and eighth 

 segments) ; this posterior portion of the band is not edged with darker 

 green. The caudal horn is very slightly cnrved, rose-colored 

 anteriorly at the base, tipped with yellow, and is covered with 

 spinules which, except the lateral ones, are black. The anal shield 

 and plates have black granulations. The stigmata have a white dot 

 at each extremity, and are bordered with orange. The legs are rose- 

 colored and the prolegs green. 



Fourth molt. — The last molting during the larval state occurred 

 during the night of August 7th-8th. On the following morning they 

 were found feeding on the dry leaf upon which they had been resting 

 motionless for the twenty-four hours preceding their change. Their 

 position in each molting has been on the mid vein of the leaf. The 

 withdrawal of the head from its case at the commencement of the 

 molting appears to be accomplished in a very brief time, if not at a 

 single effort. In Ceratomia quadricornis Plarris, the operation is so 

 gradual, that its progress can be followed for a day or more. In this 

 species, when a careful inspection has shown no indication of the separa- 

 tion of the case, an hour thereafter, it has been found wholly withdrawn 

 within the skin of the anterior segment, through which the lateral 

 bands of the head could be very distinctly seen. In Darapsa Myron 

 (Cramer), tlie corresponding operation appears to be as quickly 

 accomplished. 



All the above moltings of Dareinma itndulosa have taken place 

 during the night. 



Food plant. — The larva, according to information given to Dr. 

 Clemens as stated in his description of Ceratomia repentinus (deter- 

 mined by an examination by Grote and Robinson of the typical 

 specimen of Walker to be identical with this species"^), has been 

 taken on the ash, upon which the individuals above described were 

 reared. Mr. Grote states that he has observed it numerously on the 

 lilac {Syringco vulgaris) on Long Island. It will probably also be 

 found on the privet [Ligustrum vulgare\ — a larva which must have 

 been either this species or Sphinx cinerea {chersis of Hiibner), having 

 been reported to me as occurring on this food-plant. 



Pupation. — Before entering the earth, it undergoes a marked 

 change in color. One taken from a fence August 27th, presented a 

 soiled white appearance, in which only a trace of its original green 

 was visible ; the position of its lateral bands could with dilficulty be 



* Trans. Amer. Ent. Soc., 1868, vol. ii, p. 76. 



