12 



Omiodes dcmamtalis {\\a\V.) (Plate II, fig. 8).. 



" J' 9 21-24 nnri. Antennal ciliations one-fourth. Abdomen light 

 ochreous, segmental margins white. Fore wings yellowish-ochreous, 

 roore or less tinged with reddish or brownish ; costa suffused with rather 

 dark fuscous from base to three-fourths; a dark fuscous dot in disc at 

 two-fifths, and a small transverse-linear dark fuscous mark beyond 

 middle; an almost straight white line from beneath costa at three-fourths 

 to inner margin at two-thirds, anteriorly margined with dark fuscous ; a 

 hind-marginal row of blackish dots ; cilia grey-whitish, with a grey line. 

 Hind wings whitish-fuscous, towards hind margin becoming pale ochre- 

 ous ; a dark grey transverse discal mark at one-third : a strong white line 

 from beneath costa beyond middle to anal angle, margined anteriorly 

 with dark fuscous ; an interrupted blackish hind-marginal line ; cilia 

 white, with a grey line." [Meyrick, Trans. Ent. Soc. London, p. 216, 

 1888] . 



'I'liis iiKitli lias i)een recordi'd froiii Oaliii, Kaimi, and Hawaii. 

 It i.s less coninion than the other grass-feechng species of Omiodes, 

 lait I liave sometimes seen them quite abundant loealiy. The 

 enterpillars prol)al)ly feed on several species of grass. I liave 

 found them on Paniciim prurie^is and Paspahim coujii^qaijaii 

 (Hilo grass). Thcj^ feed similarly to O. acccpta. 



Full-grown caterpillar. — (Plate III, fig 4). Length j!2-2o mm.; 

 grass-green where the contents of alimentary canal show thrti, 

 otlnrwise p;d(' yellowisli; Jiead testaceous, a hlack spot including 

 ocelli, a round hlack spot in middle of each half of face in front, 

 a tiny hlackish dot on postero-ventral margin of head, some pale 

 luownish mottling on up])er part of head; mandiltlcs hrown, 

 ai>ical half l)lack. Cervical shield with a strong l)lack posterior 

 and lateral margin, interrupted in mciHan line Ik hind; a few 

 tiny dots near dorsal anterior margin, also a few faint one s near 

 posterior margin ; a large black spot, with a smaller one behind 

 it in each lateral lobe of cervical shield; tubercles iv. t v. and 

 vi. are partially brown-marginccl. Tubercles i, ii and iii of seg- 

 ment .'), and i and ii of segment 4 have black margins, nt)t always 

 complete, heaviest on anterior margin; tubercles i, ii and iii of 

 segments 11, 12 and lo are mostly marked with black in some 

 part of tlu' margin, sometimes some of them entirely suri'ounded; 

 often some faint markings on some of the tubercles of the other 

 segments, sometimes forming two rows of faint marks a little 

 above the line of spi racks. 



I'ui)a. — 12 nun. long, very dark brown; spiracles slightly 



