952 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxviii. 



ACANTHOCAMPA EXCAVATA, new species. 

 TOGE-SHAKUTORI-MUSHl. 



Food plant: Ifofi/,-; a/ha. 



Head white with vertical tuft Ijrown, thorax grsiy brown. Wings 

 graj^ish white overspread with fuscous on the margins and on base of 

 inner margin of fore wings to outer line, with scattered })rown irrora- 

 tions. Lines l)road, l)lack and brown, l)oth bent in oii median vein. 

 A subterminal shade joins the fuscous margin to costa l)efore apex. 

 Hind wing with a broad central band. The fuscous shading is some- 

 what more extensive and continuous in the male; otherwise the sexes 

 are alike in coloration. Expanse: male, 45 mm., female 55 mm. 



This is probably Zamacni alhofaseluria Leech,*^* but I have been 

 unal)le to consult the original description. The new genus seems jus- 

 titied in any case, as this species diti'ers from Zatnacra in having four 

 spurs on the hind tibiw, equall}' developed. I prefer, therefore, to 

 found it on a definite species, even if it prove to be a synonym. 



The peculiar larva has long prominences like thorns, as indicated in 

 the Japanese name. In the position of repelling attack, in which one 

 larva is mounted, the head is curved beneath the body and the dorsal 

 thorns project prominentl3^ Body robust, feet normal. Head rather 

 small, dark brown. A small dorsal elevation, carrying tubercles i on 

 joint 5; on joints 0, 7, and 8 a high thorn-shaped papilla. Two slender 

 papillae (tubercle ii) on joint 12. A series of small-pointed subventral 

 papillae on joints 5 to 9. Green, a broad brown dorsal area on joints 

 2-4 and 0-13, broken, except for slight mottlings, on joints 5 to 8 in 

 the region of the dorsal thorns, edged with white, which becomes 

 white streaks on the bases of the thorns. Traces of a subdorsal pale 

 line; spiracles white, ])lack ringed; thorns dark tipped. 



Pupa in an earthen cell. 



Type.— C2it. No. 8396, IT.S.N.M. 



Family COCHLIDHD.E. 



CNIDOCAMPA'' FLAVESCENS Walker. 



IRA-MU8HI. 



Food plant: Dlospyroa kak!. 



The larva has the general structure of Miresa^ long subdorsal hori..'^. 

 at the extremities, covered with stinging spines and a bright colora- 



«Anii. Mag. Nat. Hist., (6) XIX, 1897, p. 322. 



''A new name for Monema Walker (1855), not Greville (1829). Staudinger 

 pointed out that this name was preoccupied (Rom. Mem., VI, 1892, p. 301), but did 

 not propose a substitute, as he thought the species referable to Miresa. It is, no 

 doubt, derived from Miresa, but the pectinations of the male antennae have entirely 

 disappeared and I regard it as a distinct generic type. 



