GENUS CASTNIA AND SOME ALLIED GROUPS. 199 



obsoletaj alisque anticis apice acuminatis e Castniis facile distinguitur. Caput magnum ; oculi maximi, 

 lateraleSj antice approximatij spatio angusto inter se separati; palpi tenuissimi, breves^ erecti, ad 

 medium frontis vix attingentes, articulo penultimo longOj ultimo minuto acuto. Vestigium nullum 

 linguse spiralis detesi. Antennce circiter SO-articiilatsej clavatse, articulis primis 32 filiformibus ; apice 

 acuto, parum incurvato, fasciculo parvo setarum terminato. Thorax robustus. Abdomen mediocre. 

 Tibi(B anticse breves, in medio calcari armatse. Tarsi antici elongati, pulvillo mediocri, unguibus 

 acutis, curvatis, simplicibus, setisque duabus elongatis apicalibus instructi. AlcB sat magnse, anticse 

 trigonae, margine apicali fere recto, apice acuminato producto ; posticte ovali-trigonae, tenaculo (seta 

 crassa curvata prope basin costae) anticis ligatse : anticse vena postcostali paulio ante medium alte 

 bifurcata, ramo antico ramulos tres emittente, quorum tertius {b 3) apicem alse attingit, ramo 

 postico etiam tres emittente ; vena mediana ramulos quatuor emittente, quorum superior (seu disco- 

 cellularis, c 3*) cum inferiore {b 5*) vense postcostalis venula nulla transversa conjungitur : alse 

 posticse vena postcostali bifida, ramulis liberis et cum venulis medianis haud conjunctis, venamediana 

 e basi bipartita, singula parte etiam bifida, inde rami4 mediani; vena anali et subanali simplicibus. 



Tascina orientalis. (Plate XXXIII. fig. 5.) Alis anticis saturate fuscis, fascia fere 

 recta obHqua pone meclium costse fere ad angulum internum extensa albicla, alis 

 posticis obscure aurantiaco-rufis, limLo lato fusco ; corpore nigricante, abclominis 

 apice rufescente. Long. corp. unc. Ij. Expans. alar. unc. 3i. 

 E.ab. Singapore (PFa/^«ce). In Mus. Hopeiano Oxonise. 



Genus V. Hecatesia. (Plate XXXIII. figs. 1—4.) 



Hecatesia, Boisduval, Monogr. Zygsen. p. 11 ; Wallier, List Lep. Het. B. M. i. p. 54. 



Corpus sat crassum, abdomine in maribus barbato. Caput parvum, ocellis duobus instructum. Antenna 

 elongatse, cylindricae, pone medium in maribus fusiformes vel subfusiformes, in fceminis minus 

 incrassatse. Palpi ultra medium faciei assiu'gentes, dense hirsuti, articulis tribus, primo crassiore 

 curvato, tertio dimidium secuudi paullo superante. Lingua elongata spiralis. Thorax valde hirtus. 

 Al(B, insecto quiescente, tectiformes, breves ; anticse in maribus spatio magno reniformi vitreo 

 transverse striolato, prope costam, instructse, hac in medio in tuberculum corneum elongatum dila- 

 tata, ramos vense postcostalis dislocante, scil. ramo primo curvato marginem posticum arefe vitrese 

 formante, ramis 2, 3 et 4 subapicalibus ad basin inter se aeque distantibus, vena quinta prope basin 

 arese vitrese emissa, vena cellulam discoidalem claudente fere indistincta at curvata; vena mediana 

 4-ramosa, ramis tribus ultimis ad basin valde approsimatis : alte anticae in fcemina area vitrea 

 carentes; cellula magna discoidali, apice fere recta transversa, cellulaque parva angusta subcostali 

 distincta, ad apicem ejus ramos tres emittente, medio bifido : alse posticse cellula discoidali ad 

 trientem alse extensa, ibique transverse et indistincte desinens, vena 3 c * e medio ejus emissa. Pedes 

 satis graciles, tibiis barbatis ; tibia^ antica^ calcari forti medio instructse. 



This curious Australian genus was first described by Boisduval, and placed by bim in 

 the family Zygasnidse, but removed to the Agaristides in his recent memoir on that tribe 

 published in the ' Hevue de Zoologie,' 1874, in which position, between Eusemla and ^-Ego- 

 cera, it was placed by Walker. It appears to me, however, to be more nearly aUied to 

 Castnia by means of the genus Synemon, agreeing with Castnla in the possession of the 

 small narrow subcostal cell formed by the branches of the postcostal vein, the foui-th 

 of which arises from the third at some distance beyond the extremity of this smaU ceU, 

 in the normaUy formed wing of the female. Untilj however, we become acq^uainted with 



