AMERICAN LEPIDOPTERA. 199 



gate patches of black scales, one immediately before the middle of the wing, the 

 other halfway between this and the base. Fringes grey, with a slight yellowish 

 tinge. Hind wings pale greyish. Hind tibiae greyish white, outwardly fuscous ; 

 hind tarsi whitish, with a wide fuscous band followed by two fuscous spots on 

 their outer sides. Expanse II millim. 



This is a most interesting species, nearly allied to Balrachedra leder- 

 erieUa, Zell., which Monsieur Milliere has bred from larvae, feeding in 

 the webs of the gregarious larvae of Lipafis chrt/xbrrhcea, Lin. I have 

 also bred it from among old webs of other larvae and of spiders on 

 branches of different species of Mimosa and other shrubs, also from old 

 galls on Pistuihia terebinthus and a species id' Cornus (?) in the south 

 of France, these galls containing numerous webs of spiders. I have 

 found larvae of Batrachedra jveeangusfa among the cotton-like seeds of 

 sallow (Salix raprsea), and in one instance in a goldfinch's nest lined 

 with that substance. The habitat of the larva of this new species is 

 particularly interesting, confirming these observations as to the substances 

 chosen for food by the known species of this genus. It would be desir- 

 able to ascertain whether the larva of Batrachedra mh'nipomonella, 

 Clem., bred from galls on Salix cordata by the late Mr. B. I). Walsh 

 and Dr. Clemens, finds any similar source of nutriment in or among the 

 galls which it frequents. 



• ienus IDIOSTOMA. Wlsm. 

 445. IdioMtoiua amerioella, sp. nov. 



Antennae pale straw-color. Labial palpi straw-white, widely diverg- 

 ing, the apical joint as long as the very slightly stouter second joint. 

 Maxillary palpi clothed with long, straight, straw-white hairs, projecting 

 downwards. In the Proc. Ent. Soc. London, 1881, p, 27o, pi. xiii. f. 

 42. I described this genus, from a single .South-African specimen, under 

 the name of ldioglossa, as having tufts of hair-like scales at the base of 

 the tongue ; but I was then in some doubt a,s to the true position of these 

 tufts. There is no doubt as to the present species being congeneric with 

 the African one; but the tufts belong undoubtedly to the maxillary 

 palpi, the joints of which they conceal. Having only a single specimen, 

 I am again precluded from dissecting it ; but the original generic descrip- 

 tion must be amended in this particular, and the name, which is mis- 

 leading, must be changed. The specimen in the collection of the 

 American Ent. Soc. Philadelphia is much worn ; but the genus is 

 completely distinct from all other known genera, and is easily recog- 

 nizable at a glance by the ornamentation of the hind wings. Since this 

 specimen has been sent back to America. I have received, through the 

 kindness id' Mons. E. Ragonot. a beautiful example, collected in Texas 



