NATURAL SCIENCES OP PHILADELPHIA. 213 



above and beneath, submoniliform ; no dorsal papilliform points, but two 

 rows on the sides ; abdominal and terminal feet Very short, the latter placed 

 posteriorly. Head small, cordate, horizontal. The body is yellowish or pale 

 greenish, the head, 1st, 2d, and 3d segments black. 



It binds the leaves of oaks together, in August and September, and picks 

 out the parenchyma between the network of veins. In the latter part of Sep- 

 tember it weaves a slight cocoon between two leaves, (in nature it is probably 

 made elsewhere than between the leaves of its food plant), and becomes a ra- 

 ther short, thick pupa, with the antennae cases moniliform and longer than 

 the wing-cases, beyond the end of which they project as an obtuse spine. It 

 appears as an imago in March or April. 



Labial palpi very long and recurved, the tips extending bach as far as prothorax, 

 but remote from the face and head. 



P. re flex el la. Head brownish, tinged with ferruginous. Labial palpi 

 dark ochreous, with a black line on the edge of second joint beneath, and 

 three black lines on the third, one in front and one on each side. Antennae 

 dark ochreous, annulated with dark fuscous ; basal joint with two black stripes 

 in front. Fore wings dull ochreous, profusely dusted with reddish fuscous ; 

 cilia short and dark colored. Hind wings fuscous. 



This species very closely resembles, physically, M. tentoriferella. The 

 labial palpi are longer, however, more recurved, and the second joint perfectly 

 smooth, whilst in tentoriferella it is roughened with scales. 



Both these genera likewise closely approach the European genus Phibolocera, 

 and it is not impossible that one of them may be really identical with it, not- 

 withstanding the longer antennae and shorter third joint of the labial palpi in 

 the European species. 



Menesta. 



Fore wings obtusely pointed above the middle, elongate-ovate. Disk closed 

 by a very faint nervure. The subcostal subdivides into five nervules, the first 

 of which is from the middle of the disk, the fourth being the apical, and the 

 fifth the post apical from the middle of the disk behind. The median is three- 

 branched, the medio-posterior being opposite the third subcostal vein. The 

 fold is thickened at its end and runs into the basal third of the median. The 

 submedian curved, and shortly furcate at the base. 



Hind wings somewhat trapezoidal, slightly emarginate on the hind margin 

 beneath the tip. The discoidal cell unclosed. The costal nervure is long 

 and extended nearly to the tip. The subcostal somewhat attenuated at its 

 base, distinct from the costal, and furcate at the apical third of the wing. The 

 median three-branched, the superior and central veins on a common stalk. 



Size small. Head and face smooth, minutely scaled. Forehead and face 

 rounded and very broad. Ocelli none. Eyes vertically placed, minute, oval, 

 salient. Labial palpi smooth, slender, curved and ascending equal to the 

 vertex ; second joint slightly thickened towards its end ; third very slender, 

 pointed, and not more than one-half as long as the second. Maxillary palpi 

 very short, distinct. Antennae much separated at their base, about one-half 

 as long as the fore wings, filiform and ciliated beneath microscopically, with 

 one hair to each article ; basal joint very short, scarcely thicker than the 

 stalk. Tongue scaled at the base, slender, and about as long as the anterior 

 coxae. 



M. tortriciformella . Labial palpi fuscous, towards the base whitish. 

 Head, antennae, and face dark luteo-fuscous, the latter whitish beneath. Fore 

 wings dark brownish with a purplish hue, with a small lunate white spot on 

 the end of the disk. Hind wings dark fuscous, cilia the same. Feet pale 

 yellowish, the ends of middle and posterior tibiae touched with fuscous ; the 

 middle tarsi fuscous externally, and the hind tarsi banded with fuscous at 

 the base. 



I860.] 



