Mr. W. L. Didtant on Ilomoptera. 79 



Walker had previously described a species of hsua from 

 Hong Kong as Issus biplaga (List Horn. ii. p. 367, 1851). 



Paratylana dimidiata. 



Jmus (limuliatns, Walk. Joum. Linn. Soc. Lon<l., Zool. x. p. 123 (18C8). 

 Tylann herbida, ^^. lull ii.:irt i Mon. Issiden (Homopt.), p. 200 (19(»6). 



Ilab. Mysol. 



Paratylana bifascia. 



Ifsus bifasna, Walk. Joum. Linn. Soc. Lond., Zool. x. p. 123 (1868). 

 Tylana herbida, Melich. (part.) Mon. Issiden (Homopt.), p. 206 (1906). 



Hab. New Guinea. 



Paratylana picea. 



lifus piceus, Walk. Joiirn. Linu. .>uc., Zool. x. p. 123 (1868). 

 Tylana picea, Melich. Mon. Issiden, p. 205 (190(5). 



Hab. Aru, New Guinea. 



Neotylana, gen. nov. 



Allied to Paratylana by the narrow face and vertex, but 

 with the face obliquely directed inwardly, and not outwardly 

 as in Paratylana. Vertex with the lateral margins strongly 

 ridged ; face nearly three tin^s as long as broad, at base 

 extended a little above the eyes, where it is very slightly 

 narrowed, lateral margins strongly ridged, two central longi- 

 tudinal ridges more or less meeting near base and ape.x ; 

 clypeus centrally ridged ; pronotum anteriorly eonically 

 produced between the eyes, the basal margin centrally 

 sinuate, the disk longitudinally depressed ; pronotum tri- 

 carinate ; tegmina short, broad, the costal margin convex, 

 the apical margin obliquely truncate, posterior margin of 

 cla\"us gibbously rounded near base. 



Type, N. maryinalis, Walk. 



Neotylana marginalis. 



Hysteropterum marginale, Walk. Ins. Saund., Horn. p. 46 (1858); 

 Meiicb. Mon. Issiden, p. 151 (1906). 



Hab. Africa ; '' Cape Coast." 



Genus Narayana. 



yaraynua, Dist. Faun. Brit. Ind., Rhynch. ill. p. 349 (lOOT) 

 Cnpehptennn, Meiicb, Mon. Iseiden, p. 210 (1906). 



