186 
MEMOIliS OF THE l^ATIO^'AL ACADEMY OF SCIENCES. 
Stage III. — Length, 20 min. The head is somewhat angular, spotted with whitish, and the 
tubercles are larger than before. The body has more of a lilac tint, and the tubercles, which were 
yellow in the previous stage, are now still deeper yellow, tinged with white, rendering them more 
conspicuous; a distinct lateral stigmata! line extends along eighth and ninth segments and along 
the edge of the suranal plate. The end of the body is raised high up; there is no green on the body. 
Stage IV. — Length, 25 mm. In the greater thickness and shape of the body, as Avell 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 smaller, 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 than before and very 
prominent. The body is now of a deep delicate i)ea-greeu, with a large reddish brown triangular 
patch extending from tlie prothoracic segment next to the head and ending at the anterior base 
of the tubercles on the first abdominal segment, Lehind the said tubercles a broad 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 baud extends to the end of the suraiial 
plate. The underside of the body in front and the middle abdominal legs are brownish. 
Stage V. — Length, 35 mm. In shape and coloration just as in Stage lY, but the head is a little 
darker, and the back of the larva between the two great abdominal tubercles, and atso behind the 
last tubercles ou eightli segment, is green, uot reddish brown, and this area is edged with irregular 
reddish thread liues ou a white field. Also a lateral iufrastiginatal line is i)resent along the end 
of the body. In Miss Morton’s figure, copied iu my Forest Insects (PL III, figs. G, Ga) the larva has 
the same style of coloration. 
I have not yet seen tlie fully fed larva, and we need a detailed description of it, as compared 
with the final stage of Schi/ura aud Janassa. (See, liowever, Appendix A.) 
Cocoon , — Tlie larva enters the ground, forming asubtemiuean thin case of dirt. (Abbot aud 
Smith.) 
Habits . — ‘‘The caterpillar was taken on the timber white oak, but feeds also on other species 
of oak. It went into the gTound and inclosed itself iu a thiu case of dirt July 15, appearing ou 
the wing August 7. Sometimes this species also buries itself in autumn, and remains till the 
spring, at which season the moth may now aud then be observed sitting ou the oak branches.’’ 
(Smith and Abbot.) 
Food xylants . — Different species of oak. 
Geographical distribution . — Kanges through the Appalachian and the Austroripariau sub- 
l)rovinces, and is rare in llew England, but uot uucommou iu the Southern States. 
Orono, Me. (Feruald); Cambridge, Mass, (Harris Coll.); Xewburg, Y. Y. (Miss Morton); 
Massachusetts, Yew York (Freuch); Plattsburg, Y. Y. (Hudson.); Yorth Carolina (Morrison); 
<Teorgia (Abbot and Smith). Its western limits are unknown. 
Hyparpax perophoroides (Strecker). ^ 
Cosmia jyerophoroides Strecker, Proc. Acad. Nat. Sc. Phil., i>. 152, 1870. 
Hyparpax auroBirlata Graef, Entomologica Americana, iv, p. 58, June, 1888. 
Smith, Lep. Bor. Amer., p. 80, 1891. 
Kirhy, Syu. Cat. Lep, Het., i, p. 585, 1892. 
Neiim. aud Dyar, Traus. Amer. Eiit. Soc , xxi, p. 187. 1894 ; Jonrn. N. Y. Ent. Soc., ii, p. 
114, Sept., 1894. 
Moth . — Eight ^,19. I have examined two males of this form, kindly lu’csented by Mrs. 
Slosson, who captured them iu Florida. I am uot quite sure as to their siiecific distinctness from 
JI. aurora., which is a somewhat variable moth. Y’‘hether this form is a local variety or a distiuct 
southern species remaius to be pi'oved. 
Ill one example the body aud wings are nniforuily pale ashen ocherous. Tlie inner bent line 
on the fore wings are exactly as in typical aurora^ and the oblique long linear diseal mark is as in 
that species; the outer line, however, is not so wavy as in axirora. The middle region of the wing 
is of the same shade as the base and outer edge of the wing. 
The other exanqde, apparently from the same locality and captured at the same date, is dull 
roseate all over the fore wings, and thus approaches the normal form. 
