6 Journal New York Entomological Society. [Vol. xvi. 



Dorsal band deep blood red, .02 inch wide. Three subdorsal yellow lines 

 straight, even, extending the whole length of the body. The first and third lines 

 with minute black tubercles in the center of each body segment, some of them 

 twinned, a white hair rises from each tubercle. 



Body rather evenly clothed with rusty-white short hairs, thicker along the line of 

 the legs, longer hairs rising from minute black tubercles. Anal extremity from the 

 last pair of abdominal legs constantly erect. Hairs on the anal legs and suranal 

 plate rather stiff and spine-like. 



Spiracular line yellow, interrupted at the sutures, wavy in appearance, somewhat 

 broader than the subdorsal lines. Spiracles black. 



Abdominal legs (pro-legs) red, with a shiny black plate on the outer side, hairy. 

 Thoracic legs conical, black and shining. 



Subventral lines much interrupted at the sutures ; ventral line pale but distinct, 

 continuous. 



Note. — After receiving the notes on the various stages from Mr. 

 Grinnell, I described the third stage from a lot of larvae which I had 

 been rearing for specimens. The eggs from which these larvae came 

 were gathered about the first of October. The larvae described were 

 in the third day of the stage. During the last three days of the stage 

 the larvae increased to quite one inch in length but were in all other 

 respects as described above. 



Fourth Stage. — Head black, shining, strongly punctured, a little wider than 

 the body, tapering; a few long whitish hairs arise from the head. The body is dark 

 brown or black in color, with three yellow subdorsal bands, running the whole length 

 of the body, wavy in outline, uneven. Body covered with long white hairs, more 

 densely and in tufts from the subventral region. Anal legs conical, black. The ce- 

 phalic and caudal regions upheld constantly. Exudes a drop of brownish fluid when 

 disturbed. 



Fifth Stage. — Head large, black, slightly bilobed, almost as wide as the body, 

 tapering. Prothocacic shield black. Body covered with a fine whitish down or pile, 

 intermixed with a few longer hairs. The stripes are very faint in color, narrow, light 

 yellow, extending the whole length of the body, somewhat interrupted interseg- 

 mentally. Body slightly tapering posteriorly. 



Pupa. — Body long, thick towards the cephalic part, tapering gradually to the 

 anal extremity. Head slightly projecting, bilobed. Body dark brownish, covered 

 with many rather coarse punctures, a few only confluent. Spiracles large and con- 

 spicuous. Wing cases more coarsely punctured. 



The early stages of Datana robust a (Strecker) much resemble those of D. 

 pcrspicua (Grote and Robinson) as described by Packard in his " Monograph of the 

 Bombycine Moths," 1895. The adults are also very similar. 



