102 



INSECTS OF SAMOA. 



Philocoristis, n. g. 



Head smooth, shining; ocelli posterior; tongue developed. Antennae 1, 

 somewhat thick and slightly flattened, only tapering just at apex, scape short, 

 stout, with small scale-projection at anterior angle. Labial palpi moderate, 

 porrected, slender, smooth, filiform, second joint very short, terminal joint 

 twice second, pointed. Maxillary palpi obsolete. Posterior tibiae smooth. 

 Forewings 2 from angle, 3 and 4 stalked, 5 absent, 7 to termen, 8 and 9 approxi- 

 mated at base, 11 from middle. Hindwings under 1, elongate-trapezoidal, 

 apex rounded, cilia \ ; 2 remote, 3 and 4 connate, 5-7 almost connate, widely 

 diverging. 



A singular form, possibly allied to Piestoceros. 



90. Philocoristis catachalca, n. sp. 



$ 10 mm. Head shining bronze. Palpi ochreous-whitish. Antennae 

 dark bronzy-fuscous. Thorax shining iridescent-bronze. Forewings elongate, 

 posteriorly dilated, costa gently arched, apex rounded-obtuse, termen very 

 obliquely rounded, apical portion of wing beyond cell deflexed ; shining iridescent 

 greenish-bronze ; undefined patches of dull coppery suffusion on costa towards 

 base and in middle ; apical area suffused dull coppery : cilia grey, a darker 

 suffused shade. Hindwings dark fuscous ; cilia grey. 



Upolu, Malololelei, 2,000 feet, June ; 1 ex. 



91. Imma chelacma, n. sp. 



c£$ 18-20 mm. Head pale ochreous-yellowish, crown infuscated except 

 on sides. Antennae $ with fascicles of long cilia (3). Palpi pale ochreous- 

 yellowish, $ second joint much elongated, with fuscous lateral stripe, terminal 

 joint modified into a fine hair-like curved dark fuscous spine, $ second joint 

 rather short, suffused fuscous anteriorly towards apex, terminal joint normal, 

 cylindrical, obtuse, apical half dark fuscous. Thorax fuscous, an ochreous- 

 yellow stripe on tegulae, these in with apex elongated with scales, a slight 

 yellowish stripe in on each side of back anteriorly. Forewings subtriangular, 

 dorsum <$ more strongly convex, termen rather obliquely rounded ; 7 and 8 

 stalked, 8 to costa ; rather dark fuscous ; markings light ochreous-yellowish ; 

 a line along fold from base to \, a shorter line above this, a transverse mark from 

 base of costa joining these, a small spot on costa at and an oblique suffused 

 mark towards dorsum at \ ; a median band of more or less developed suffusion 



