484 FTJLGOKID^. 



2091. Liburnia frontalis, Melich. Horn. Fmm. Ceyhv, p. 100 (1903). 



Very like L. albicoUis, Motscli.,in form and pattevn of markings 

 and only to be easily distinguished from that species by the outer 

 margin of the narrow black front being broadly yellowish-white, 

 vvliereas the medial keel, which is very distinct, appears to be 

 black ; the basal joint of the antennae is piceouy, the second joint 

 I'usty-yellow ; pronctum white ; mesonotum black, the apex 

 broadly yellowish-white ; tegmina hyaline with delicate yellow 

 lightly punctm^ed veins, and a long brown streak on the terminal 

 margin; abdomen blaci?, the segments narrowly bordered with 

 j'^ellowish-XAhite ; legs yello\\ish. 



cJ . Genital segment black with a narrow excavate yello\v margin 

 above, the angles obtuse ; anal tube yellow, bearing on the lower 

 margin two spine-like processes, adjacent to one anotlier, erect 

 and directed downwards ; claspers short, yellow, with the apex 

 narrowed, placed one with the other in shape of pincers, so that 

 they border an oval-shaped space. 



" $ . Vaginal cushion and ovipositor black ; anal tube yellow ; 

 anal petiole black." {Melichar.) 



" c? ? • Length 2h millini." 



Hah. Ceylon; Henaratgoda (j^(Zc J/f7jc7;rtr). 



2092. Liburnia psylloides, Letk. (Delphax) Lul Mm. Notes, iii, 



p. lOo (1896), fig. ; Melich. (Liburnia) Horn. Faun. Ceylon, 

 p. 101, t. ii, f. 22 (1903). 



"Vertex longer than the breadth between the eyes and extend- 

 ing somewhat bej'ond the eyes, yellowish-white ; face elongate, 

 narrow, contracted a little between the eyes, black in the c5" , 

 yellowish-brown in the $ , with white earinse, the median carina 

 distinctly stouter than the marginal carinas and forming between 

 the face and the vertex an elongate narrow triangle, which is 

 yellowish- white, whilst the black depression in the face is extended 

 up to the vertex : the frontal triangle is bordered on the vertex 

 by an angular, broken, ti-ansverse lamella, which, although no 

 elongate carina extends to the neck, is connected by short 

 transverse ridges with the lateral cariniB on the vertex ; in the $ 

 the facial depression is dark only between the eyes, towards tlie 

 lower portion yello\vish-brown ; clypeus in both sexes witli a 

 yellowish-white carina ; eyes brown ; cheeks black, with a white 

 carina on the margin ; antennae pale yellow (Lethierry says of 

 the antennae, 'first joint yellow, apex black; second yellow, base 

 black ; apical joint black'; but in the very many specimens that 1 

 have examined I have found the antenna? uniformly pale yellow) ; 

 prouotum and vertex black, the carinae as well as the parts lying 

 between thera, the pronotum and mesonotum to the tip white ; 

 tegmina hyaline, transparent, with yellowish veins that are studded 

 with delicate yellowish granules, from which spring short brown 

 hairs, the transverse veins of the inner half of the tegmina 



