MEMOIRS OF THE NATIONAL ACx\.DEMY OP SCIENCES. 137 



Ichthyura brucei H. Edwards, 

 (PI. Ill, ii<;s. 23-25.) 



Idilhijitra hrueei, II. Kdw., Ent. Amur., i, p. 17. April, 188.5. 



Dyar, Eut. News, iii, p. (i, Jau., 1892. 



Kirby, Syn. Cut. Lep. Het., i, j). Gil, 1892. 



Pack.. Eiit. News, iv, p. 79, ilaruli, 1892. 



Dyar. Eut. News, iv. p. 170. May. 1893; fan. Eiit., xxiv. p. ISO. May, 1892. 

 Ichlki/iira multnoma, Dyar, Can. Eut., xxiv. p. 179. .July, 1892. 

 Aleldloplia hriicei, Neura. aud Dyar, Cau. Eut., xxv, p. 123, May, 1893; Traus. Auier. Eut. Soc, xxi. j>. 191, 



1894; Journ. N. Y. Eut. Soc, ii, p. 115, 1894, 

 MelitJopliu (ilcthc'Scnm. and Dyar, Cau. Eut., xxv, p. 122. May, 1893. 



Larva. 

 Dinii: Psyche, vi. p. 403. Feb.. 1893. 



Moth. — I will lirst copy Mr. Edwards's descri])ti()n nf tliis fonii, and then add some oliserva- 

 tious of my own : 



Ground color of ]iriuiarie9 sordid wbitc. witb the lines aud marks ricb browu. A basal aud snbbasal line, the 

 former whitish, edged with browu. aud dentate iu the middle, the latter almost straight. Behind the middle is a 

 broad brown shade through which from costa to iuteru.al angle runs a clear white line, which ou costa is broadly 

 produced into the distinct white mark usual iu the genus. Hetweeu this aud the margin a row of seven browu spots, 

 iu the middle of which is a brownish cloud resting ou posterior margiu. wliicli with the fringe is browuish. 

 Secondaries wholly mouse-color; thorax sordid white at the sides, the center broadly browu. .\bdomcn dull sordid 

 white; antenuie and palpi brown, the shaft of the former whitish. Underside mouse-color, with darker bent 

 median band common to both wings, and the white costal mark on primaries indicated by a pale dash. 



/. brucei differs from T. aplcaJis (run) iu the V being abont one half as wide, the base of the 

 inner arm of the V ending just about the middle of the wiug, heute tlie four liues are much more 

 parallel to each other than iu 7. apicaUs or /. incliim. In I. bnicci the oblique costal white mark 

 is less sinuous and in var. muJtnoma less bent behind the costa than iu hrua i. 



(IciHirophiad (listributioii. — Frauconia, N. II. (Mrs. Slosson); Brunswick, Me. (Packard, Mus. 

 Comp. Zool.): Kittery, Me. (E. Thaxter); Plattsburg, N. Y. (Hudson); Colorado (Briice, tide 

 Edwards, French). 



Var. midtnoma Dyar (PI. Ill, lig. 20). I regard this as a dark Aariety of I. brucei. The 

 markings of ji male kiudly loaned me by Mr. Dyar are identical iu position with those of a specimen 

 of I. brucei from Frauconia, N. H. ; it only differs iu the much darker colors. The basal line i& 

 widely dislocated iu the same way. In my I. brucei the fourth or outermost line is situated a little 

 nearer the outer edge of the wiug, and the iucomplete V mark is a little narrower than iu multnoma, 

 but this is a comiuoii variation. In size, iu the marginal dark spots, and the subapical reddish 

 orange i^atch the two forms are ideutical. 



First larral stage. — Head round, shining black, with a few hairs; width, 0.5 mm. Body somewhat flattened, 

 with long pale aud black hairs rising singly from large concolorous tubercles; color sordid grayish, tinged with dark 

 vinous on joints 2, 5, 7, 8, 11, and 12 over the dorsum. Feet normal, the thoracic dark, the abdominal concolorous with 

 the body. As tjie stage advances the whitish spaces on the back become nearly white and the piliferous tubercles 

 come out black and distinct iu three rows ou each side. At the end of this, and of each following stage, the larva 

 spins a house of thread aud leaves iu which it molts, aud in which it remains during the succeeding stage, when uof; 

 eating. The larv;e are solitary. 



Second stage. — Head as before; width, 0.9 mm. Body flattened, with deep segmental incisures; piliferous 

 tubercles large, concolorous at first, but later black; seta- short, black. Color blackish vinous, except the dorsum 

 of joints 3, 4, 6, 9, 10. and 13. which is greeni.sh white, contaiuiug tubercle 1 and a very narrow dark dorsal line. The 

 anal plate (i. e., joiut 14 or the tenth abdomiual segment) is vinous. Lateral and subveutral tubercles pale. Thoracic 

 feet black. 



Third stage. — Head rounded, median suture deep, shiny black, hairy; width, 1.8 nun. Warts rather large, each 

 with a hair, aud other somewhat shorter hairs* arise from the body. Color vinous black with pale yellow dorsal 

 patches ou joints 3, 4, 6, 9, 10, and 13 anteriorly, inclosing warts i and ii. A dark dorsal line, each side of which 

 are a few^ yellow mottliugs on the dark segments; subveutral warts largely yellow, the others concolorous with 

 the markings, exceiit row i, which is dark ou the yellow segments. Set;e all blackish. Later, joints 5 and 12 are 

 Been to be .a little eulargeil dorsally ; a narrow, broken, waved line appears along warts i iu the yellow markings; 

 the yellow ])atch ou joints 9 and 10 extends faintly ou joint 11; there is a broken, irregular, yellow, superstigmatal 

 line, distinct only ou the yellow-marked segmeuts, and some rather more continuous yellow mottliugs along the 

 Substigmatal ridge. 



