328 PROCEEDINGS OF THE ACADEMY 01 



forehead or vertex rather acutely rounded above or ridge-like. Ocelli none. 

 The eyes scarcely visible in front, partially concealed by scales. Antennae 

 wimple, nearly or quite as long as the anterior wings, the basal joint squamose 

 and but little larger than the stalk. Maxillary palpi none. Labial palpi 

 very slender and drooping. Tongue naked, as long as anterior coxae. 



The fore wings are almost caudate at the tip ; the posterior lanceolate. The 

 liscoidal cell of the fore wings is acute, behind, with two veins emitted at its 

 point, one to the costa before the tip the other to the inner margin. The sub- 

 costal nervure sends three short veins to the costa and the median two ap- 

 proximated veins to the inner margin. In the hind wings the subcostal and 

 median are both simple, and the latter extended to the tip. 



The head of the larva is very thin and flat, with projecting mandibles in 

 ii'ont. The body is much flattened, tapering anteriorly and posteriorly, the 

 rings separated by rather deep incisions and their ends on the sides mammil- 

 iated, the rings themselves being rather elongated ellipsoids. The thoracic feet 

 are three and mere mammillae ; the abdominal three, but their appearance not 

 very distinct, and a terminal pair. The larva approaches that of the second 

 group of Lithocolletis very closely. 



The mine is a conspicuous white blotch on the upper surface, generally oc- 

 cupying the greater portion of the leaf, aud sometimes when two are present, 

 in the same leaf, the whole of it. A day or two previously to undergoing their 

 last molting, the larva cease to eat, and at the end of that time leaving its 

 cast" within the mine abandons it to construct a white silken cocoon. 

 which is woven on some substance on the surface of the ground. 



The perfect insect holds the antennas extended at the sides when at rest. 

 and moves them with a rotatory motion during progression. 



L. amphicarpeaefoliell a. Head golden, with fuliginous hairs above. 

 Antennae golden brown, with the tips silvery white. Thorax golden, fuligi- 

 nous in front, and abdomen golden brown. Fore wings deep orange yellow, 

 with the apical portion dark golden brown and a fuliginous or deep brown 

 patch occupying the basal part of the wing, bordered broadly behind by a cir- 

 cular golden streak, extending from the costa to the inner border at the basal 

 angle. A very oblique somewhat curved golden streak, dark-margined on both 

 hides, extends from the basal third of the wing near the costa, to the middle 

 of the costa. A large golden patch, dark-margined above, extends from the 

 inner angle to the middle of the wing, with the inner margin between it and 

 the circular basal streak dark golden brown. At the beginning of the costal 

 cilia is a golden dorsal streak ; cilia dark brown, in certain lights golden brown. 

 Hind wing dark gray, cilia the same. 



The larva makes a conspicuous white blotch mine on the upper surface of 

 the leaf of Amphicarpcea monoicu (hog pea-nut) from August to October. The 

 head is pale brown ; the body pale green, with brownish maculae along the 

 dorsum, aud round dark brown spots on the ventral surface ; the ends of the 

 first ring on the sides are yellowish. After the last molting the body is uni- 

 form dark green, the "cast " with dorsal maculae being left within the mine. 

 The .imago appears about the middle of May. This insect is one of the most 

 beautiful I have met with. 



Note. The reader is requested to make the following corrections in the paper 

 contained in the September number of the Proceedings. : 

 Page 257, line 9 from the top, after "(wo," insert or three. 

 Page 260, instead of A. effrentella read A. effrenatella, and also in the expia- 

 tion of the plate p. 262. 



[Nov. 



