68 MEMOIRS NATIONAL ACADEMY OF SCIENCES. vol. xn, 



MICRAGONE HERHXA (Westwood). 



Plates XXXIII, fig. 8; CXI, figs, h, i. 



[Satvnia herilla Westwood, Proc. Zool. Soc. Loud., 1849, p. 57, pi. 11, fig. 3.] 

 Cyrtogone herilla Walker, Cat. Lep. Het. Br. Mus., VI, p. 1344, 1855. 

 [Cyrtogone herilla Kirby, Syn. Cat. Lep. Het., I, p. 856.] 



Imago. — One e? , one $. Palpi stout, reaching to front. Antennae with 16 joints, each 

 bearing two sets of pectinations, which are thick, densely ciliated, the distal ones nearly as long 

 as those of the basal pair; the tip long filiform, consisting of about 15 joints, and slightly 

 ciliated, with no vestigial pectinations. 



Fore wings somewhat like those of Smerinthus, long and narrow, the costa straight on the 

 basal two-thirds, then suddenly bent backwards to the square, scalloped apex; outer edge 

 deeply excavated, and with about seven scallops; the inner edge long, remarkably straight. 

 Hind wings with the costa convex, the apex rounded and scalloped behind; outer edge moder- 

 ately convex, with about eight scallops, the two in the middle largest, and the inner angle 

 produced into the longest point of all. The hind wings reach nearly to the tip of the abdomen. 



Body and wings of a rich velvety lilac-brown, or color of a dead dry leaf, with no definite 

 lines or spots, but many (about 12) irregular subparallel rich brown lines, which are more or 

 less broken, and are most marked on the costal and inner edges of the wing. No discal spot. 

 Around the sinus of the outer edge of fore wing is dark brown like a dark withered leaf. Hind 

 wings pink at base, with many very irregular faint lines; the outer edge dark, as in the fore 

 wings. The marks on the inner edge are distinct. 



Under side of the fore wings of a deep rich pink along the inner margin of the wing, other- 

 wise both wings are much as above, though the lines and their broken fragments are more 

 marked and heavier. There is no large conspicuous pale yellowish spot on the fore wings as 

 in the 9 . 



One 9 . Head and body uniformly reddish fawn or chestnut brown, or brown pink of 

 artists, and the wings are of the same color, often becoming Vandyke brown mottled with 

 sienna brown and pale ochre yellow. They are crossed by irregular strigae and variously 

 dotted and spotted. Fore wings with a dark diffuse basal line, which is irregular, curved out- 

 ward on the costa; beyond it the wing is lighter. The outer hah of the wing is uniformly fawn- 

 brown, and between veins III and III 3 is an oval dark brown spot ; the edge of the wing from 

 the apex to just before the inner edge dark chestnut or Vandyke brown. Edge of wings of 

 both pairs ragged, irregularly scalloped or toothed. Hind wings with a large pale yellowish 

 patch at the base, where there is a little pink, extending to the middle of the wing, but not 

 toward the costa beyond, the inner edge is strigated. 



Under side of the wings as above, but with more ochreous scales, and the base of the fore 

 wings except the costa is pinkish. There are traces of a much curved extradiscal dark line 

 toward the apical region. 



Expanse of the fore wings, <? 95 mm.; 9 110 mm. 

 Length of a fore wing, <? 43 mm.; 9 55 mm. 

 Breadth of a fore wing, o* 20 mm. ; 9 30 mm. 

 Length of hind wing, o" 25 mm. ; 9 38 mm. 

 Breadth of hind wing, c? 18 mm.; 9 30 mm. 



This is a most remarkable moth, its sere and brown colors, and ragged edges would make 

 it when at rest be mistaken for a dead, frayed, worn and tattered leaf. 



As the venation somewhat alhes it with that of the Bunaeidae, we may at present regard 

 it as an offshoot from that group or from its ancestors, which has undergone a remarkable 

 degree of specialization. The presence of a feebly developed tongue is of some significance. 



Larva. — Fully grown, length 50 mm. Head large, full, rounded, nearly as wide as the 

 pro thoracic collar; with scattered groups on surface of fine raised granulations, 3 to 5 in a 

 group, dark chestnut-brown. Prothoracic collar large, but little wider than the head, entirely 

 unarmed; the surface somewhat rugose. Directly in front of the prothoracic spiracle is a low 



