582 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 



have always found it in those that spring from the trunk. Its mine is 

 extremely long and very narrow, being only a track beneath the young 

 and delicate cuticle of the branches suiiiciently wide to accommodate 

 the body of the miner. At first it is diflficult to detect the same, but 

 after some months it is easily traced by the elevated line of reddish- 

 brown matter that marks the course of it. Thus it is easily found in 

 early spring before the buds have expanded, and the larva may be 

 sought in April, and is easily reared. In the spring the larva is of a 

 dark lemon-yellow color without markings, and at this time the larva 

 can be seen through the cuticle of the branch. About the middle of 

 May, or rather about the 10th of the month, the larva will be found 

 banded alternately with red and yellow, with two black dorsal dashes 

 on the second segment. (I regard the head as the first.) This is the 

 indication that it has reached its maturity, and in a day or two it cuts 

 the cuticle and leaves the mine to weave its cocoon, sometimes in the 

 angle of a bud on the branch of which it has been feeding, and some- 

 times on adjacent substances. 



In rearing this insect it is simply necessary to thrust the branches of 

 the willow into wet sand contained in some convenient vessel and to 

 l)rotect them so that the larvse can not wander after leaving their 

 mines. 



The perfect insect appears after a pupation of about a month, or, as 

 is the case of one specimen specially observed, in twenty-six days. It 

 may be found as an imago, therefore, about the middle of June. 



Moth. — Forewings dark fuscous, witli a silvery white band at the basal third of 

 the wing, and a slightly oblique one of the same hue in the middle, inclined towards 

 the inner angle. Near the tip of the wing are dorsal and costal silvery white spots 

 opposite each other. Behind the dorsal spot is a narrow, somewhat curved white 

 streak, extending from the apical cilia to the middle of the wing. Cilia silvery 

 grayish at the tips. Hind wings grayish fuscous. Antenute grayish fuscous. Head 

 silvery white. Labial palpi silvery, the hairs of the secoud joint touched with fus- 

 cous. Maxillary palpi dark fuscous. (From Clemens's Tineina.) 



60. Batrachedra salicipomonella Clem. 



The following account is copied from Clemens : 



This is a very interesting "micro," not only in consequence of the 

 specific resemblance it bears to the European Batrachedra prceangusta, 

 but of the discovery of its larva by one of our most gifted and promis- 

 ing entomologists, Mr. Benjamin D. Walsh, of Rock Island, 111. 



In the note which accompanied the perfect insects, Mr. Walsh writes: 



I inclose herewith several specimens of a moth bred from the Tenthredinidous gall, 

 salieis-pomum Walsh manuscript, and a single one from the Cecidomyidous gall, S. 



and the next is delivered to the tip of the wing, and receives an oblique discal vein 

 from the last branch of the subcostal, which closes the disk. The submedian vein 

 is simple. Head smooth, with appressed scales. Ocelli, ? AntenntB one- 

 third less long than the forewings. Labial palpi slender, ascending, not higher than 

 the vertex; the secoud joint is scaly, the third smooth. Beneath the labial palpi 

 are small, ascending maxillary palpi. Tongue naked, as long as the fore coxaj and 

 femora. 



