98 MEMOIKS OF TIIK NATIONAL ACADEMY OF SCIENCES. 



it as tin- type of a now yeiius, allied to, but distinct from, tihipliisia, owiny to the notable difter- 

 ences in the venation, as well as the presence of a dorsal tutt and other characters given below. 

 After sendinjr my description for iJiiblication Mr. Dyar wrote me that he had seen the specimen 

 with my name on it in Mrs. Slosson's collection and that it seemed to him to be a dark 9 of 

 (iliipliixifi (u'iiiiaiHhi Hudson, addiiij; that Mr. Xeumogcn's ^•Mclia ddiihyi" is referable to the same 

 genus, but his name -'Melia" is preoccupied. Since then 1 have reexamined Edwards's typo of 

 G. Hi rem, ami iiave received from Mr. Dyar a specimen of G. Untneri. ]\Ir. Dyar also wrote me as 

 his opinion that the species of Ceruridia cu' Melia (Kumelia) are not geuericaHy ditt'erent from 

 Glnphisia, as he has collected G. xerera in the Yosemite Valley, Cal. 



As the result of my studies, especially of the venation, I am inclined to divide the genus 

 Glui)liisia into two sections and to believe that in the forms mentioned below we have a number 

 of climatic or temperature varieties of a species allied to G. Uiitiieri (originally referred t» 

 Dasychira by Grote), and whicli is common to both the Atlantic and Pacific coasts. 



Of all these forms the variety sJosxoiria' is the most remarkable, from its very dark markings, 

 and deserves to rc^ceivo a distinct name. That these forms may be the result of climatic causes, 

 acting on the insect in its pupal state, seems pretty well established from the remarkable results 

 obtained not only by Weisniann and W. H. Edwards, but also the more detailed experiments 

 made by Mr. F. Merrilield and jjulilished with elaborate plates in the Transactions of the 

 Entomological Society of Ijondon for 181)1 (p. 155) and 1S92 (j). 3;}) (xxxvi). 



In comparing G. slo.snonia' with Hudson's description of avimacula, it seems most probable 

 that it is a melanotic form, due to the colder and damper situation of Franconia, N. H., which is 

 about 1,4(MI teet above the sea. In s/o.v.so«/rt' the thorax is ligliter. the pale ocherous basal and 

 discal spots of (irimacula are whitish gray in slos.sonia; and the basal and middle lines of the 

 median band arc swamped by the broad black-brown band of sl<»isiiiii(v; the hind wings of 

 slonsoiiid' agree with Hudson's description of <(cimaciil(i. 



The following account of its transformations is copied from l>yar (Psyche, vi, p. 5<»3, Aug.,. 

 1893) : 



Eiig (.'). — Mciiiisiilieru-al, tin; base flat; smootli, slightly sliiiiy wliitisli uret'ii, the miiroiiyle round, sin:ill, black.. 

 Under a hall'-hich objective, it is seen to be covered with irregular llatteued reticulations, not raised above the 

 surface of the egg, much as ni (Jerura, but more irregular, ranging in shape from quadrilateral to hexagonal. 

 Diameter, 1.1 mm. Founil on a i)oplar leaf, deposited singly. I am not sure that this egg belongs to this species, as 

 it failed to hatch, but it was found with the larvie and probably belongs here. 



first Ittiral stage. — Not observed. 



Second stage.— Head slightly bilobed, not sliiuy, pale green; mouth wliitisli; (icilli black: width, O.il nini. liody 

 smooth, slender, without hiiuijisor tiibcrclcs, luiiforiu jiale green, not shiny, with a faint yellow subdorsal line. N'o. 

 other markings 



Third Htar/e. — f)nly the cast head-case was observe<l, the width of which was 1.45 mm. 



Fiiiirth s/ayc— -Width of head, 2.3 mm. Much as in the first part of the last stage. There is a moderately 

 distinct, pale yellow, subdorsal line! without other markings, or else traces of lateral and stigmatal yellowish lines, 

 the former bioken, the latter continiuuis, but faiut. .Spiracles small, faintly ocherous. As tln^ stage advances the 

 stigmatal line becomes the most distinct, the others becoming faint. 



/''////( stage. — Head very slightly bilobed, somewhat flattened in front, uniform pale, sublnstrous green, miuith 

 parts paler, jaws black; width, 3.5 nnu. Feet normal, all nsecl in walking, concolorous with the body, the claspers. 

 wliitisb. Body long and slender, noctuiform in appearance, without humps or tubercles; jiiliferous dots absent, the 

 haire being reduced to mere riuliments. Color uniformly uoulustrons pale green, semitrausparent, showing plainly 

 the pulsations of the dorsal vessels. An obscure, pale yellow, sligmatal line. Spiracles dull oeher. The l.irva 

 rests on a slight web on the back of the leaf, the head held out flat. 



.\8 the stage adv.ances the markings become much more pronounced. The head is mottled with white, especiaU.v 

 on each side of the clypeus; elypeus white centrally ; a yellow line appears on the side of the head fnnu the base of 

 till- ('utenua' behind the ocelli, in line with the stigmatal bjind when the insect is in its normal position of rest. 

 Stigmatal line distiuct, jiale yellow, bordered above, very narrowly, with crimson ou the thoracic segments, and 

 reaching nearly to the end of the anal plate. Uorsal region whitish green, becoming almost wliiti^; siibveutral 

 region clear green, with yellow dots; spiracles orange, feet faintly tipped with vinous. There are faint traces of a 

 yellowish subdorsal line and one on each side of the dorsal vessel, Ijiit they become white and are seen as somewhat 

 more distinct parts of the general whitish dorsal shading. Still later the rudimentary iiiliferoiis dots become 

 surrounded with yellow, ThiTe are seven ou each side above the stigm.ital line, seven in the sul)ventral space 

 (where they appear more distinctly on accouitt of the absence of white shading), .mil others on the venter ot tlie- 

 legless segiueuts. 



