MNEMOSYNE. 33 



wholly black, thus resembling 0. kiu-seongensis : the most salient 

 Uifferences in the three species are found in the venation of the 

 teginiiia ; in 0. luiwara' there are three discal transverse veins a 

 little beyond middle; in 0. simlce two, the lowermost faint; in 

 0. kwseoiigcnsis there are two, and in addition a perfectl}' straight 

 and continuous transverse vein on the disk of the apical area. 



Length exel. tegiii, 4; exp. tegm. 12 millim. 



Hah. Ceylon; Xuwara Eliya, Peradeniya {Green, Brit. Mus.). 



3179. Oliarus binghami, Disf. A. M. N. H. (8) viii, p. 738 (1911). 



Body above castaneous ; margins of vertex and pronotum, 

 posterior nuirgnis of mesonotum, and posterior abdominal seg- 

 mental margins oehraceous ; head beneath (including face), 

 sternum, and legs pale castaneous or brownish ochraceous ; 

 abdomen beneath of the colour and markings of the upper surface ; 

 tegmina greyish white, subopaque, the venation brownish, and 

 \\'ith the following fus(;ous-brown markings — three narrow spots 

 in costal membrane, three somewhat long curved linear spots 

 beneath costal membrane and a little beyond base, and some 

 larger maculate markings on apical area, consisting of a spot at 

 end of stigma, a transverse fascia before apex, apical margin and 

 a large internal fasciate spot beneath stigma, which is bifurcate 

 towards inner margin and there encloses a pale spot ; wings very 

 pale t'uliginous witii the veins darker ; vertex foveate, with a 

 central carinatiun, the margins strongly ridged ; margins of 

 pronotum strongly ridged ; mesonotum with live central cari- 

 natious; face centrally and medially strongly ridged. 



Length excl. tegin. 6 ; exp. tegm. 18 niillim. 



Hah. Rangoon (C'oL Bitujliam^ Brit. JSlus.). 



Allied to 0. sti'jma, Motscb. 



Genus MNEMOSYNE. 



Mnemosyne, Stdl, Hem. Afr. iv, p. 150 (1866); id. Hem.Fabr.W, 

 p. 91 (1869); Foiol. Biol. Coitr.-Amtr.^ lihynch.. Hem.-Hom. i, 

 p. 102 (1904). 



Type, M. j-)lanicej)s, Fabr., a Neotropical species. 



Distrihiition. Neotropical and Oriental Kegions. 



Fowler, who worked from the JN'eotropical type of this genus, 

 thus diagnoses it: — " Vertex very narrow; the three keels of the 

 scutellum (^mesonotum) more or less obsolete, the side ones being 

 sometimes very faint ; the frons (face) broad before the apex, and 

 like the clypeus keeled in the middle and at the sides ; no frontal 

 ocellus is present, but the round scar is sometimes very distinct ; 

 teginiua more or less pellucid, the clavus with the posterior vein 

 situated at some distance from the suture, and not continued to 

 the apex, forming a fork with the transverse vein at about the 

 middle, the radial vein of the corium foi'ked much before the 

 interior ulnar vein; posterior tibiic bispinose." 



TOL. VI. D 



