( 15 ) 



♦ 



a pair in excliangc— from Jaliiifc, IMarscliall Islands, which differ markedly from 

 all our coni:olmli. The specimens arc; small and very pale, paler on body and 

 forewing than the individuals from other localities, at least in the S sex, and 

 have a yellowish grey tint, which is very distinct in the i. . We think it advisable 

 to await further evidence of the constancy of the characters which distinguish the 

 Jalnit sjiecimens before naming the form. 



II. MEGACORMA gen. nov.— Typns : obUqm. 



M„rro>,;ia Walker, List. Lep. Ilet. B M. viii. p. 108 (185(5) (partiin). 

 Sphiiir, Boisduval, Sj,rc. Geii. Lfp. llil. i. p. 09 (1875) (partim). 



Dihifli'i, Butler (non Grote & Robins., 1805), Tr. Znnl. S,,,;. Lnad. p. 612 (1877) (partim). 

 ilegiinoUm, Kirby {nun Boisduval, 1875), Cat. Lfii. Ilet. i. p. 082 (1892) (partim). 

 Psciidosphiiu:, HampwQ (non Burmeister, 1850) in Blanf., Fauna Brit. Ind., Mnlh< i. p. 101 (1892) 

 (partim). 



S ? • Tongue much longer than the body. Second segment of palpus narrower 

 at base, triangular, very much shorter than first segment ; apex of the latter 

 with a regular and large cavity ; on the inner surface the first segment flat, 

 not obviously concave as in Hrrse, scaliug at apical margin very regular 

 (PI. LX. f. 2), this scaling visible from the outer side (PI. LX. f. 3) ; 

 inner surface of second segment all scaled, cavity less deep than in Herse and 

 Aclierontia, the roof of scales over the cavity not quite so distinctly separate from 

 the other scaling of the segment tlian in the allied genera. Antennae thickest not 

 far from base, gradually thinning towards end. Thorax very long, extending far 

 beyond the base of the forewing. Tarsi long, slender, spines short ; middle and 

 hinder tarsi with conspicnons comb of prolonged spines ; hinder tibia as long as 

 first tarsal segment ; pnlvillus present, paronychium with two lobes on each side. 



S . Tenth abdominal sternite with a broad rounded mesial lobe, convex below. 

 Harpe armed with long teeth. Clasper with a large patch of very broad, multi- 

 dentate scales, and eighth tergite with elongate, tawny, friction-scales at the apex : 

 these scales turned inside, but not forming a ribbon as iu Anihiilicinae. Anterior 

 coxae with scent-organ ; the tufts of hairs generally visible without removal of 

 the coxae. 



?. Eighth tergite shallowly and broadly sinuate, the angles strongly rounded. 

 Vaginal ■ plate mcmbranaccHjus proximally, much folded; anterior margin of the 

 vaginal orifice pi-oilucoil into a truncate, feebly siiuiate, lip, the angles prominent ; 

 post-vaginal part of plate more strongly chitinised, smooth, short (I'l. XXII. f. 3). 

 Early stages not known. 



The peculiar structure of the palpi has been overlooked ; the conspicuous 

 cavity fornicd by the scaling at the end of the first segment of the palpi is similar 

 to that found in 'I'/iciu'lni and :i,llios. 

 lluh. Oriental llegion. 

 One species. 



f). Megacorma obliqua. 



*Macrntiln nhlirjua Wiilker, l.r. p. 208. n. 15 (1850) (Ceylon ;— Mu.s. Brit.). 

 *Hphitu- ttPHlnr Boisduval, I.e. p. 113. n. 51 (1875) (Himalaya, ? ;— coll. Charles Oberthiir). 

 IJitwlia iMiipia, Bullur, Ic. p. 014. n. 10 (1877) (Ceylon) ; Moore, Lrp. Cnjlmi ii. p. 4. t. 74. f. 2. (1882). 

 Mi-'jurmloH rMi,iua, Kirby, l.r. n. 2 (1892) (Ceylon). 



