REPORT OF THE ENTOMOLOGIST. • 225 



begun to transform by the middle of September, others not until a month 

 later. As a preparation for transformation a silken lining was simply spun 

 between the leaves already webbed to:::ether, and in that the last larval 

 skin was shed, the chrysalis falling to the ground with the falling leaves. 

 In the warm room in which the breeding cages were kept the moths 

 began to issue about the middle of December, and were continually 

 issuing from that time until spring. Under ordinary circumstances 

 they probably do not emerge until spring. 



We have not observed the eggs and newly-hatched larvae of this 

 insect, but the former are probably deposited upon the under surfoco ot 

 the leaf and the latter probably live at first in a slight web on the under 

 surface of the same leaf, only attaching it to another leaf as it increases 

 in size. 



It will be an easy matter to destroy these insects, should they become 

 so abundant as to necessitate some remedy, by simply burning the fallen 

 leaves in late autumn. 



We append to Mr. Chambers's characterization of the species, which 

 follows, a short description of larva and pupa : 



Gklechia robixiaepoliella (n. sp.). 



At first glance I incliued to think that the singie fenuvlo SMi'ciuien frou) wbi<;h I de- 

 scribe this species was either G. ohliqdisirigdla Cham, ov Cf. (SUigp) fiiscointlJkJtHa 

 Cham., to each oi" which it bears some resiiiiibiance, being, however, nearer the latter. 

 I think, on further examination, that it is distinct. If, however, it should prove to bo 

 fuscopalUdeUa or a variety of it, th.en I wisli to change the specific name of the latter 

 to that .ibove given, because, in conformity with the rule among the Tinehia, it should 

 receive its name from its food plant, and rohiniaefoliella is, for other reasons, preferable. 

 Though the larva feeds on the locust, the motli cannot be mistaken for Anaaimimn 

 roblniae Fitch, a species known only by Dr. Fitcli's description, which is evidently mad«5 

 ^lp from tlie larva, mine, and moth of two, if not three, very diffin-eut genera and 

 species, the mine described by Dr. Fi'hcli being that of LUhocolletis jvbimclla, the larva 

 that of i. omaiella, and the moth either Gracillaria robinieUaoT some utterly unknown 

 epecies. 



In this species the palpi are slender and ratlier Jong and the Mnd iviiigs are emarginate 

 heneath the apex. The palpi are white, with two dark brown annulations on the tliird 

 joint and two brown spots on the outer surface of the second joint ; face Avhite, faintly 

 irrorate with liiscus. Antennae brown ; thorax and fore wings grayish fuscus, darker 

 towards the apex of the wings ; base of the dorsal margin of the fore wings fuscus 

 with an oblique brcwn streak of slightly raised scales at about the basal fourth, points 

 ing obliquely backwards towards a small brownish spot about the middle of the dorsal 

 margin; the extreme base of the costal mnrgin is brown, t\nd before Ihe cilia there is 

 an oblique brown costal spot or streak. Hind wings and the cilia of both pair paio 

 fuscus. Abdomieu gra^yish fuscus; anal tuft straw yellow. Leg3 dark-gray brown, 

 annulate with sordid white. Al. ex. i inch. 



Larva. — Length, when full grown, 8'"''> (.31 inch); slender, subcylindrical, tapering 

 slightly at eacli end; 14 well-developed feet. Color, when young, a very light g'reen; 

 when full grown, considerably darker: when ready to pupate, with a pinkish tinge; 

 head, pale brown ; thoracic plate, faintly yeilowirfh with brown edges. Ou each side 

 ventral to the thoracic shield is a large, black, jiiliferous spot. On the dorsal surface 

 of segments 2 and 3 is a slightly recurved transverse row of six piliferous spots, the 

 dorsal pair being sm.allest and the subdorsal pair largest, each of the latter bearing 

 two hairs. The abdominal segments have each four dorsal piliferous spots at tho 

 corners of a square and o^lso the usual subdorsal and lateral spots. The anal plate ia 

 of the same color as tho rest of tho bodj--, with a brownish posterior margin. 



Pxtpa. — Length 4°"» (.15 inch), broad across shoulders and tapering acutely to 

 anus; the anterior end being rounded. The general color is reddish brown. The 

 whole dorsal surface ia covered with numerous lino and regular punctures. Tho 

 seventh abdominal segment has its posterior dorsal margin toothed and its ventral 

 margin fringed with bristlos. The anal joint has many luiante .slender hooked j^'o- 

 jectibns. Tho members are closely soldered together ; the wing cases, an I ennal sheaths, 

 find i)osterior tarsal sheaths all ending together at the ijosterior ventral lujugiu of tho 

 fifth alHioRiiual segment. 



lo AG 



