«14 JOURNAL, BOMBAY NATURAL HISTORY SOCIETY, Vol. XVI. 



Tonza citrorrhoa n. sp. 



ft. 16. mm. Head white, loosely rough-haired on crown but not tufted, 

 face pale yellow. Palpi, antennae, thorax, and abdomen pale whitish-yellow. 

 Forewings elongate, narrow, terminally dilated, costa slightly sinuate, apex 

 round-pointed, termen concave, rather oblique, tornus prominent, round- 

 pointed ; white, with series of pale fuscous transverse strigulae between veins ; 

 costal half except towards termen, and veins on terminal area suffused with 

 pale brassy-yellow ; margins of cell, and tornal veins dotted with dark fuscous ; 

 minute blackish dots at apex and tornus : cilia whitish, becoming pale yellowish 

 posteriorly, with a dark brownish postmedian line. Hindwings whitish, towards 

 apex yellowish-tinged and with a few grey strigulae ; cilia white. 



Two specimens, Hantane, Ceylon, in March (Greenj. This is very closely 

 allied to the other known species, but shows slight structural as well as super- 

 ficial differences. The neuration is misinterpreted in my description of the 

 generic characters when dealing with the Australian T. purella, and should 

 be as follows :— Forewings with 2 and 3 stalked from angle and approximated 

 throughout, 4 absent, 5 connate or short-stalked with 2, 6 from middle of 

 transverse vein, 7 and 8 approximated at base or connate, 7 to termen, 9 absent, 

 10 absent, 11 from beyond middle of cell. Hindwings with 2 widely remote 

 from angle, 3 and 4 short -stalked from angle, 5 from middle of transverse 

 vein, 6 from angle of cell to beneath apex, 7 absent, 8 closely approximated to 

 cell and base of 6, then diverging. 



Struthisca n. g. 



Head loosely scaled ; ocelli absent ; tongue absent. Antenna? f, in ft bipec- 

 tinated or plumose to apex, basal joint short, thick. Labial palpi rather or very 

 short, slender, loosely scaled, pointed. Maxillary palpi obsolete. Posterior tibiae 

 smooth-scaled. Forewings with 16 furcate, 7 and 8 stalked or approximated, 7 

 to apex or costa, 9 absent, 11 widely remote, from middle of cell, secondary cell 

 and parting- veins defined. Hindwings £, elongate-ovate, cilia I ; 5 absent, 6 and 

 7 short-stalked or approximated, 8 free. 



Type S. siderarcha. This genus is a development of Melasma, and shows 

 analogous variability of structure, but is easily separable by the absence of a vein 

 in both forewings and hindwings. 



Struthisca holoscia n. sp. 



ft. 13 — 15 mm. Head, palpi, antenna?, thorax and abdomen grey ; palpi very 

 short ; antennal pectinations extremely long, | of length of antennae. Forewings 

 moderately elongate, costa moderately arched, apex round-pointed, termen very 

 oblique, slightly rounded ; 7 and 8 stalked ; grey, obscurely mottled with rather 

 dark fuscous : cilia grey, mixed with rather dark fuscous. Hindwings and cilia grey. 



Three specimens, Maskeliya, Ceylon, in February (Pole). 



Struthisca mesocentra n. sp. 



ft 9. 13-18 mm. Head ochreous. Palpi very short dark fuscous. An- 

 tennae in ft fuscous, pectinations 4 in 9 pale ochreous. Thorax and abdomen 

 pale greyish-ochreous. Forewings elongate, costa gently arched, apex round- 



