352 Annals of the South African Museum. 



Phthorim^a operculella Z. 

 Cape Colony, Kalk Bay and King William's Town. An imported 

 pest, very destructive to the potato. 



ENCOLPOTIS, n. g. 



Head with appressed scales ; ocelli present ; tongue developed. 

 Antennae f , in ^ simple, basal joint moderately elongate, without 

 pecten. Labial palpi long, recurved, thickened with appressed scales, 

 terminal joint as long as second, acute. Maxillary palpi very short, 

 drooping, filiform. Posterior tibiae clothed with long hairs above. 

 Forewings with vein Ih furcate, 2 from towards angle, 7 to termen, 

 8 and 9 out of 7, 11 from middle. Hindwings 1, trapezoidal, apex 

 produced, termen sinuate, cilia 1 ; 3 and 4 connate or short-stalked, 

 5 rather approximated, 6 and 7 stalked. 



Allied to Brachmia, but differing in the neuration of forewings. 



Encolpotis xanthoria, n. sp. 



(J 5 . 15-18 mm. Head and thorax light brownish, face suffused 

 with white. Palpi brown, second joint suffused with white above 

 and internally. Antennae fuscous. Abdomen pale whitish-ochreous. 

 Forewings elongate, rather narrow, costa moderately arched, apex 

 pointed, termen sinuate-concave, rather strongly oblique ; ferruginous- 

 brown, with a prismatic-bluish gloss, darkest towards costa ; stigmata 

 represented by spots of dark fuscous suffusion, discal rather approxi- 

 mated, plical before first discal ; a streak of dark fuscous suffusion 

 along termen : cilia orange-yellow, beneath tornus light brownish. 

 Hindwings and cilia pale whitish-ochreous. 



Cape Colony, Capetown, in August ; five specimens bred from 

 larvae feeding on Icerya, a genus of Coccidce (scale-insects). Further 

 particulars of this interesting habit should be obtained. 



DIOCOSMA, n. g. 



Head smooth ; ocelli present ; tongue developed. Antennae f , in 

 <J simple, basal joint very elongate, rather swollen, with a small 

 basal hairpencil beneath. Labial palpi long, recurved, second joint 

 with rough projecting scales towards apex above, terminal joint as 

 long as second, slender, acute. Maxillary palpi very short, filiform, 

 appressed. Posterior tibiae clothed with long hairs above. Fore- 

 wings with vein Ih very long-furcate (for more than half its length), 

 2 from |, 7 and 8 stalked, 7 to costa, 11 from before middle, secondary 



