186 MEMOIRS OF THE NATI0:N^AL ACADEMY OF SCIENCES, 



Staye III. — Lengtli, 2(1 mm. Tlie he;\(l is somewliat angular, spotted with wbitisli, and the 

 tubercles are larger tliau before. The body lias more of a lilac tint, and the tuberele.s, which were 

 yellow in the previous stage, are now still deeper yellow, tinged with white, rendering them more 

 conspicuous; a distinct lateral stigmatal line extends along eighth and ninth segments and along 

 the edge of the suraual plate. The end of the body is raised high up ; there is no green on the body. 



/Stage IV. — Length, lio mm. In the greater thickness and shape of the body, as well as the 

 bright green color, the larva of this stage closely resembles the caterpillar in its final stage. The 

 head is now smoother, tlie tubercles siualler, and the dorsal tubercles on the three thoracic 

 segments, as well as those on the second to seventh abdominal segments, are smaller than before, 

 while those on the first and eighth abdominal segments are now larger thau before and very 

 promineut. The body is now of a deep delicate i)ea-gTeen, with a large reddish brown triangular 

 patch extending from the prothoracic segment next to the head and ending at the anterior base 

 of the tubercles on the first abdominal segnient. IJehind the said tubercles a broad reddish brown 

 l>atch extends to the large tubercles on the eighth segment, the band being edged with whitish 

 yellow; from the I'ear of the tubercle a similar-colored l»and extends to the end of the suranal 

 plate. The underside of the bodj' in front and the middle abdominal legs are brownish. 



Stage V. — Length, 3o mm. In shape and coloration just as in Stage IV, but the head is a little 

 darker, and the back of the larva between the two great abdominal tubercles, and also behind the 

 last tubercles on eighth segment, is green, not reddish brown, and this area is edged with irregular 

 reddisli thread lines on a white field. Also a lateral infrastigmatal line is present along the end 

 of the body. In Miss Morton's figure, copied in my Forest Insects (PL III, figs. 0, Gt/) the larva has 

 the same style of coloration. 



I have not yet seen the fully fed larva, and we need a detailed description of it, as compared 

 witli the final stage of Schizura aud Janassa. (See. however, Appendix A.) 



Cocoon. — Tlie larva enters the ground, forming a subteiraneaii thin case of dirt. (Abbot and 

 Smith.) 



Habits. — "The caterpillar was taken on the timber white oak, but feeds also on otlier species 

 of oak. It went into the ground and inclosed itself in a thin case of dirt July 15, appearing on 

 the wing August 7. Sometimes this species also buries itself iu autumn, and remains till the 

 spring, at which season the moth may now and then be observed sitting on the oak branches." 

 (Smith and Abbot.) 



Food phintn. — Different species of oak. 



Geographical distribution. — Eauges through the Appalachian and the Austroriparian sub- 

 X)rovinces, and is rare in New England, but not uncommon in the Southern States. 



Orono, Me. (Fernald); Cambridge, Mass. (Harris Coll.); Newburg. X. Y. (:\Iiss Morton); 

 Massachusetts, New York (French); Plattsburg, N. Y. (Hudson); North Carolina (Morrison); 

 Georgia (Abbot and Smith). Its western limits are unknown. 



Hyparpax perophoroides (Streekei). 



Cosmia pn-ophnrohlie Strecker, Proc. Acad. Nat. Sc. Phil., p. 152, 187G. 

 Hiipar2>ax aurostriata Graef, Entomologica Americaua, iv, p. 58, June, 1888. 



.Smith, Lep. Bor. Amer.. p. 30, 1891. 



Kirby, Syu. Cat. Lep. Het., i, p. 585, 1892. 



Neum. auil Dyar, Trans. Aiiier. Eut. Soc .xxi, p. 187. 1894; .Totirii. N. Y. Eiit. Sue. ii.p. 

 114, Sept., 1894. 



Moth. — Eight £,19. I have examined two males of this form, kindly presented by Mrs. 

 Slossou, who captured them in Florida. I am not quite sure as to their specific distinctness from 

 H. aurora, which is a somewhat variable moth. Whether this form is a local variety or a distinct 

 southern species remains to be proved. 



In one example the bodj' and wings are uniformly pale ashen ocherous. Tlie iuuer bent line 

 on the fore wings are exactly as in typical aurora, and the oblique long linear discal mark is as in 

 that sjiecies; the outer line, however, is not so wavy as iu aurora. The middle region <>f tlie wing 

 is of the same shade as the base and outer edge of the wing. 



The other examjile, apiiareutly from the same locality and cajituieil at the same date, is dull 

 roseate all over the fore wings, and thus approaches the normal form. 



