LOGISIS.—MEGACRASPEDUS. 21 
necting forms is somewhat obscure, but, according to the scheme of neuration, 
relationship should be sought among the derivatives of Aristotelia Hb. 
1. Logisis achroea, sp.n. (Tab. I. fig. 19.) 
Antennae pale ochreous. Palpi very pale ochreous, the median joint shaded with fawn-brown. Head and 
Thorax shining, pale ochreous. Forewings shining, very pale ochreous, somewhat shaded along the cell, 
on the fold, and along the dorsum with fawn-brown; a brown spot below the costa near the base, and 
a narrow brown costal shade at the extreme base; cilia pale ochreous. Exp. al. 40 mm. Hindwings 
shining, straw-grey ; cilia very pale ochreous. Abdomen fawn-brown, mixed with pale ochreous, 
Legs (missing). 
Type Q (65878) Mus. Wlsm. (Godm-Salv. Coll.). 
Hab. Costa Rica: Volcan de Irazu, 6000-7000 ft. (H. Rogers). Unique. — 
The specimen is in poor condition, but representing a distinct and remarkable form 
has been thought worthy of description. 
MEGACRASPEDUS Z. 
=Avutonepa Busck (=§ Nzpa Chmb.). 
Type 1: Ypsolophus (Megacraspedus) dolosellus Z. (HS. 1853), 
Yersotoruus F.(C.) Mxeacrasrepus Z. Isis 382 189-90 sp. 15-16 (1839). Murcacraspepus HS. 
SB. Schm. Eur. 5 11, 43 no. 65 Pf. 12: 48-4 (1853), 157 sp. 392-6 (1854) ; Hnmn. Schm. 
Deutsch. Tin. 348-50 no. 451 sp. 580-4 (1874), Tbl. 1, 48 (1876) ; Stgr-Wk. Cat. Lp. Eur. 
303 no. 231 sp. 2165-73 (1871); Meyr. Tr. NZ. Inst. 18 162-3 (1886) ; Wlsm. Tr. Ent. Soc. 
Lond. 1891 109 Pf. 5°47 (1891): Ent. Rec. 9 140 (1897) ; Stgr-Rbl. Cat. Lp. Pal. 2 161 
no. 3841 sp. 3001-11 (1901) ; Wlsm. Ent. Mo. Mag. 39 266 (1903) ; Meyr. Pr. Lin. Soe. 
NSW, 29 257, 272-83 no. 4 sp. 26-46 (1904). 
Type 2: Neda plutella Chmb. (Chmb. 1874; Busck 1902). 
Avutonepa Busck.=§ Nepa Chmb. Can, Ent. 6 243-4 (1874) : Bull. US. GG. Surv. 4 157 (1878): 
Jr. Cin. Soc. NH. 2 198 tf. 203° 20 (1880). Avronepa Busck Bull. US. Nat. Mus. 52 496 
sp. 5553 (1902): Pr. US. Nat. Mus. 25 773, 782 Pf. 28-4 (1903). 
1. Megacraspedus exilis, sp.n. (Tab. I. fig. 20.) 
Antennae dark bronzy brown. Palpt white, the posterior two-thirds of the long triangular tuft on median 
joint dark bronzy brown; underside of basal joint dark brown at apex. Head and median portion of 
Thorax white, the sides and tegulae dark brown. Forewings white, profusely irrorated with dark 
bronzy brown scaling, through which runs a longitudinal blackish median streak from base to apex, 
which, except for a slight step upward about the end of the cell, is very nearly straight throughout ; 
the brown dusting is much condensed along its upper edge on the basal half, and there is a small 
detached blackish subcostal spot at one-third from the base; the costa is very narrowly, and the 
dorsum narrowly, pure white ; cilia white, with a broken line of blackish scales along their base, and 
another before their middle, the black median streak running through them at the extreme apex. 
Exp. al.12 mm. Hindwings shining, very pale bluish grey, cilia pale ochreous, Abdomen and Legs 
brownish grey, the hairs on the upper sides of the tibiae whitish. 
Type 2 (65759) Mus. Wlsm. (Godm-Salv, Coll.). 
Hab. Mexico: euerreRo: Amula, 6000 ft., VIII. (A. H. Smith). Unique. 
Exceedingly near plutella Chmb., but differing in its larger size, in the white 
thorax, and in the more pronounced detached costal spot. 
