172 MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 



the ;ii)pearance of the European A', (h-omcihiriiis. as each abdominal segment from tlic fust to the 

 niiitli bears a hirge, tk>shy, two tootlied huni]). the tliree hii-gest on sejj'ments 3 to '>. Thus the 

 outHne of the back is serrate, and perhaps mimics tlie serrate edge of the leaf of tlie elm on which 

 it feeds. The body is greenish, with the upper half of the sides washed with white, with crimson 

 spots ami bands, tiie tip of the dorsal protuberances being also crimson. 



Mr. Marlatt does not state wliether the dorsal tubercles are movable, or whether the caterpillar 

 is jirotected by mimicking the outlines or the colors of the leaves of its food plants. Further 

 observations are needed on this ])oint. 



Cocoon. — ''The cocoon is formed on the surface of the earth, and consists of loose, yielding 

 silk and earth." (Riley.) Marlatt states that the caterpillars spin "cocoons of stout, brownish 

 silk in folded leaves or under some slight protection at the surface of the soil, coiu'.ealed by 

 particles of earth. 



Pu2)a. — The body is rather thick, the cremaster very blunt, with a long, slender, acute point 

 bearing very short curled set:x>, and divided at the end into two minute forks. Surface of the 

 body with shallow sparse pits; on the sutures of the abdomen very finely shagreened. Length, 

 lG-18 mm. "The pupa was very active, rolling a foot or more at a time." (Soule.) 



I am indebted to Miss Caroline G. Soule for the excellent colored figure of the larva on PI. XIX. 



JlnhUn. — Mr. Marlatt has published in the Transactions of the Twentiefli and Twenty-first 

 Annual greetings of the Kansas Academy of Science (1S87-8S) an account of the habits and 

 transformations, with the accompanying figures, of this singular Notodoutian. It appears to be 

 double brooded, as the moths appeared in Kansas from May to June, and the females deposited 

 their eggs at that time, a second brood of moths probably appearing about the 1st of August, 

 as the caterjjillars became fully grown September 14 to 21. They spin cocoons of stout, brownish 

 silk within folded leaves (fig. GM) or under some slight ])rotection at the surface of the soil, 

 concealed by particles of earth. 



I once found the larva on the elm at Providence fully grown September 3, but lailed to 

 describe it; it pupated September <i, and the moth appeared in May of the following year. 



We are indebted for the following notes on (he larva to Professor Eiley: 



Found September IG, 1869, .it Bellville, on the comiiiou elm. .a most singular caterpillar. September 26, 18GS), 

 they all descended to the ground and formed their cocoons in the same corner of the breeding cage. It issued the 

 following May 4. 1870. From a larva found feeding on the elm August 26 the moth issued September 21. (Fifth 

 Rep. v. S. Ent. Comm. p. 267. ) 



^[r. Dyar writes that he has found the larva in its second stage early in the sunnncr (June) 

 in its "])erch.'' at Keene Valle.y, Essex (county, N. Y. 



Food plant. — It has not yet been found on any other plant than the elm. 



Geographical (Ihtrihutlon .—T\w genus ranges through the A))palachiau into the eastern 

 portions of the Campestrian subprovince, not having yet been observed west of the great plains. 



Franconia, N. H. (Slosson); Brookline, Mass. (INIiss Soule); Amherst, Ma.ss. (Mrs. Fernald); 

 Trenton Falls, N. Y'. (D(mbleday); Providence, R. T. (Packard); New York (<irote); Missouri 

 (Itiley and Miss Murtfeldt); Eastern Kansas (Marlatt); Topeka, Kaus. (Popenoe); Canada, 

 Maine, Massachusetts, New Hampshire, "Wi.sconsin, Ohio, Carbondale, 111. (French); Plattsburg, 

 N. Y. (Iludson); New Jersey, Pennsylvania (Palm); Chicago, 111. (Westeott). 



Dasylophia Packard. 

 (I'l. XLII, ligs. .5, 5(1, 6, venation.) 



riiiildiiu Abbot and Smith, Xat. Hist. l.ep. Ins. Georgia, p. I(i7, Tab. LXXXIV, 1797. 

 Siitixlonlii Harris, Cat. Ins. Mass., p. 73, 183."). 

 Dalniia^ Walker, Cat. Lcp. Br. Mus., v, p. 1062, 18.->.5. 

 Datami? Morris, .Synopsis l.ep. N. .\mer., ]) 247, 1886. 

 Iiasiilophia Pa<-k., Proc. Knt. Soc. Phil., iii, p. .362, 1864. 



(Jrote, Now Chock List X. Amer. Mollis, p. 19, 1882. 



Smith, List Lep. lior. Anu^r.. p. 30. 1891. 

 Ualima Kirby, Syn. {'at. Lep. Het., i, p. 569, 1892. 



Dasylophia Ncum. and Dyar, Trans. Amer. Knt. Soc, xxi, p. 200, June, 1894,' .lonrn. N. V. Knt. Soc, ii, p. 116, 

 Sept., 1894. 



Moth. — Head large and rather prominent, vertex with two high pointed erect tufts, the tips of 

 which meet over the vertex, reaching to the level of the thorax in 9, a little shorter in S. 

 Antennie with long slender pectinations on the basal two-thirds, while the remaining third is 



