242 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxiii. 



spot, triangular and .smaller on the second and thii'd thoracic segments, 

 rectangular on the others; hairs white. When fully grown, it is about 

 9 mm. long, casts its skin in the mine and assumes its last larval form, 

 in which it does not eat and which is strangely di fife rent from the for- 

 mer stage. Now the color of the head is shining black and the 

 thoracic shield creamy yellowish white. Body very dark purplish red, 

 each segment with a conspicuous laterual spot concolorous with the 

 thoracic shield. But, stranger still, now both the thoracic and the 

 abdominal feet are normal, well developed. The larva cuts a slit 

 in the epidermis and comes out. moving freely about in a looping man- 

 ner like a geometrid, for which it might easily be mistaken if the ninn- 

 ber of feet is not observed. It pupates in a fold at the edge of a leaf 

 or in any suitable corner in a roomy glistening white cocoon. 



COPTODISCA Walsingham=ASPIDISCA Clemens. 

 COPTODISCA CONDALIiE, new species. 



Antennae fuscous, i of forewing. Palpi, face, head, thorax, and 

 basal part of fore wing silvery white, in some lights, with golden reflec- 

 tions, especialh^ on vertex. Apical half of forewing golden yellow, 

 with a costal and a dorsal silvery white streak at the beginning of the 

 cilia, nearly uniting so as to form a fascia, lilack margined on ])oth sides. 

 Just behind is another costal white spot, also black margined behind, 

 and at apex is a large velvety black triangular spot. Outer dorsal edge 

 of wing black. Cilia silvery white, with a single black pencil of hairs 

 at apex continued from the apical ))lack spot. Hindwing dark grey 

 with silvery reflections; cilia paler with golden reflections. Abdomen 

 black above; underside of bod}^ silvery white; legs silvery. 



Alar expanse, 'dA to 3.7 mm. 



Tyjpe.—^o. 4952, U.S.N.M. 



Described from nine specimens, bred February 12-24 from upper 

 mines in leaves of Condalia feiTea, collected ])v Dr. Dyar at Palm 

 Beach, Florida. 



Egg is laid on underside of leaf at the midril). The mine begins as a 

 short, gradually broadening upper serpentine one, filled with black 

 frass, and ends in a transparent nearlj" circular blotch, the sides of 

 which the larva cuts out and uses as a case, which is fastened by one 

 short silken band to a leaf or twig. Case is oval, 3 by 1.5 mm. Several 

 mines often found in one leaf. Larva is cylindrical, first and second 

 thoracic segments broad and flattened, bodv tapering backward. 

 Head is light brown, small, retractile into the first thoracic segment; 

 thoracic shield and anal plate dark brown; body greenish white with a 

 large dorsal and ventral dirt}^ g'l'ay spot on each segment. Feet 

 obsolete. This species is yqvj near C. spletidoi'^fereUa Clemens, but* 

 has the black in forewing less pronounced both in extent and shade. 



i 



