PLUTELLIDvE. 
357 
dark grey slightly pale-speckled, some blackish scales on veins; 
plical and first discal stigmata represented by small white dots, 
plical obliquely posterior, second discal by transverse-oval pale 
ochreous spot edged laterally white in middle and containing two 
minute blackish dots placed longitudinally; a white dot on costa 
before |; some minute white dots on apical part of costa and termen 
separated by blackish irroration: cilia grey. Hindwings grey; 
cilia light grey, base whitish. 
Rhodesia, Mazoe, January; 1 ex. (Coll. Janse). 
PLUTELLID/E. 
OSTHIOSTOLA, n. g. 
Head smooth; ocelli posterior; tongue absent. Antennae 1 (?), 
in simple, scape forming a large concave eyecap expanded with 
long projecting scales anteriorly. Labial palpi very long, recurved, 
slender, with appressed scales, terminal joint longer than second, 
slightly roughened anteriorly, pointed. Maxillary palpi rudimen¬ 
tary. Posterior tibiae above smooth-scaled, with projecting apical 
tuft of dense scales, beneath with strong projecting triangular tuft 
of dense scales beyond median spurs extending to near apex, spurs 
roughened ' with scales above. Forewings cell rectangular pos¬ 
teriorly, with strong parting-vein forming auxiliary cell, 2 and 3 
nearly approximated from almost prominent angle, very short, 4 
absent, 5 and 6 straight, parallel, 7 to costa, 8 parallel, upper angle 
of cell near costa, 9 and 10 short, from or near it, 11 from towards 
base. Hindwings |, narrowly elongate-ovate, cilia 1|; cell broad, 
a simple parting-vein well developed, 2 short, remote, 3 from angle, 
4 absent, 5 and 6 parallel, 7 diverging. 
Perhaps related to Tonza. 
Orthiostola iyroda, n. sp. 
cT. 17 mm. Head, palpi, thorax white. Forewings rather 
narrow, slightly dilated, costa arched posteriorly, apex rather 
pointed-prominent, termen sinuate, very oblique ; whitish-ochreous, 
costa suffused white on basal half; some light brownish-ochreous 
mottling on basal half of dorsum, sending three oblique strigse 
across disc before middle, an oblique fuscous mark on fold before 
middle preceded and followed by spots of white suffusion, second 
larger and reaching dorsum ; posterior half of wing marbled and 
partially suffused light brownish-ochreous; an irregular spot of 
white suffusion on tornus followed by a small suffused fuscous 
mark ; two small marks of dark fuscous scales beneath costal edge 
at f; a triangular light brassy-yellow blotch on apical part of costa 
(its apex anterior), crossed by three fine white lines on veins and 
marked with a black dot in middle of its base, edged anteriorly by 
a fuscous strigula from costa : cilia pale ochreous, a white median 
shade, on costa a white, basal line, towards tornus wholly white. 
Hindwings and cilia white. , 
Colombia, San Antonio, 6600 feet, February ; 1 ex. 
