44 PERCY SLADEN TRUST EXPEDITION. 



56. Osaka hi/alina, s-p. n. (Plate 4. figs. 15, 15 «.) 



Body ochraceous brown, legs paler and more ochraceous ; ridges to vertex, pro- and 

 mesonota paler in hue ; face paler ochraceous brown, densely finely punctate, the 

 carinations ochraceous, the lateral carinae outwardly spotted with brown ; clypeus pale 

 ochraceous brown, densely finely punctate, the central and tnarginal ridges ochraceous ; 

 tegmina hyaline, the veins piceous, a somewhat large costal stigmata! spot, the claval 

 area behind claval vein brownish ochraceous ; wings hyaline, the veins piceous. 



Long. excl. tegm. 4J millim. ; exp. tegm. 13 millim. 



Locality. Mahe. 



57. Osaka relata, sp. n. 



Allied to 0. hyalina, but smaller ; body and legs ochraceous not olivaceous brown ; face 

 pale ochraceous, apically more oblique towards clypeus, the spots at outer margins of 

 lateral carinse smaller and paler in hue. 



Long. excl. tegm. 4 millim. ; exp. tegm. 11 millim. 



Locality. Cousin Islands, Seychelles. 



Subfamily Delpliacinas. 



Genus UGYOPS. 



Ugyops, Guer. Voy. Ind. -Orient. Belanger, Zool. p. 477 (1834). 

 Hygiops, Amy. & Serv. Hist. Hem. p. 511 (1843). 

 Bidis, Walk. List Horn. Suppl. p. 85 (1858). 

 Hygyops, Stal, Hem. Afr. iv. p. 175 (186G). 



I have retained the name Ugyops, Guer., for this genus for the following reasons : — 

 (1) It is the earliest and original name. (2) Although Amyot and Serville suljstituted 

 Hygiops for it, " Le nom avait ete fautivement ecrit Ugyops," Hygiops cannot be 

 accepted as final, for (3) StSl has again altered it to Hygyops. It is therefore, I think, 

 better to accejit the usual priority in this case, though the name is of faulty construction, 

 than to embark on this conflict in emendation. 



58. Ugyops senescens, sp. n. (Plate 4. figs. 16, 16 a.) 



Vertex, pronotum, and mesonotum very pale luteous; vertex with the apical and 

 lateral margins and a central longitudinal line black ; pronotum with a central castaneous 

 line not reaching apex, and two black spots on each lateral area ; mesonotum with 

 a central longitudinal castaneous line, on each side of which is a more obscure curved 

 line, and two black oblique lines on each lateral area, between which the colour is much 

 darker ; abdomen above pale luteous, a central line and the posterior segmental margins 

 castaneous, the lateral and apical areas broadly irregularly piceous ; face, clypeus, sternum, 

 and legs very pale luteous, face spotted with black, the spots arranged in four longitudinal 

 series, those on each side of the central sulcation most distinct, the marginal series more 

 obscure ; clypeus with two piceous spots near base and two near apex ; abdomen beneath 



