186 MEMOIKS OF THE NATIONAL ACADEMY OF SCIENCES. 



Stage III. — Length, 20 mm. The head is somewhat angular, spotted wiili whitish, and tlie 

 tuberch's are hirgcr tliaii before. The body has more of a lilac tint, and the tubercles, whicli were 

 3-e!low in tlie previous stage, are now still deei)er yellow, tinged with white, rendering them more 

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

 the edge of the suraual i)late. Theendof the body is raised higli \\\)x tiiere is nogreenon the body. 



StiKje IV. — Length. 25 mm. In the greater thickness and sliajx' 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, the tubercles snmller, and the dorsal tubercles on the three thoracic 

 segments, as well as those ou the second to seventh abdominal segments, are snmller than before, 

 •while those on the first and eighth abdominal scgUK'nts are now larger than before and very 

 prominent. The body is now of a deep delicate pea-green, 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 segment. Uehind the said tubercles abroad reddish brown 

 patch extends to the large tubercles on the eighth segment, the band being edged with whitish 

 yellow; from the rear of the tubercle a similar-colored band extends to the end of the suranal 

 plate. The underside of the body in front and the midiUe abdominal legs are brownish. 



Stage V. — Length, 3."» 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 

 reddish thread lines on a white field. Also a lateral infrastigumtal line is present along the end 

 of the body. In Miss Morton's figure, copied in my Forest Insects (PI. 111. figs. 0, G«) tlie larva has 

 the same style of coloration. 



1 have imt yet seen the fully fed larva, and we need a detailed description of it, as com])ared 

 with the final stage of Schizura and Janassa. (See, however. Appendix A.) 



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

 iSmith.) 



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

 of oak. It went into the ground and inclosed itself in a thin case of dirt July I."), ai)poaring on 

 the wing August 7. Sometimes this species also buries itself in autumn, and renmins till the 

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

 (Smith and Abbot.) 



Food jdants. — Different species of oak. 



Geographical distribution. — Kanges through the Appalachian and the Austroripaiian sub- 

 l)rovinces, and is rare in New England, but not unconmutn in the Southern States. 



Orono, Me. (Fernald); Cambridge, Mass. (Harris Coll.); Newburg, N. Y. (Miss Morton); 

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

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



Hyparpax perophoioides (Strecker). 



Coamia jiii-ophnroUhii Streck'T, Proi-. Acad. Nat. Sc. Pbil., p. l.")2, 187ti. 

 Bijparpas (iiiroslrinta (ii;icf, Kiitomologioa Amei-icana, iv, ]). .oS, Jnui-, 188S. 



Sinitli, I.c]>. Ijoi-. Aim-r.. ]). liO, 1S91. 



Kirby, .Syn. Cat. Lc]). Het.. i, p. "*">, isyi'. 



Neuiii. and Dyar, Traus. Anier. Eiit. Soc . xxi, ]). 187. 1894 : .loiirn. N. Y. Knt. Sue, ii, p. 

 114, .Sept.. 1894. 



Moth. — Eight 6,19. I have examined two males of this form, kindly i)resented by IMrs. 

 Slos.son, who captured them in Florida. I am not (juito sure as to their si)ecilic distinctness from 

 Jf. 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 exami)le the body and wings are uniformly pale ashen ocherous. The inner bent line 

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

 that species; the outer line, however, is not so wavy as in aurora. The middle region of the wing 

 is of the same shade as the ba.se and outer edge of the wing. 



The other example, apjiarently from the same locality and cajitured at the same date, is dull 

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



