Ee ED 
LIBURNIA.—RHOTALA. . 137 
Male with the pygofer and the anal tube rather small, and the styles long and stout, almost encircling the 
anal tube, clavate and dilated a little from their base, and narrow at the extreme apex; behind their base 
on each side is a white callose spot. 
Long. 23 millim.; lat. 1 millim. (¢: brachypterous form only.) 
Hab. Mexico, Vera Cruz (H. H. Smith). 
8. Liburnia paludata, sp.n. (Tab. XIII. figg. 18, 184, d, 3.) 
Nigra, antice plus minusve testacea, vertice angusto latitudine vix longiori; fronte latitudine fere triplo 
longiori, carinis albido-testaceis ; pronoto longo, carinis tribus validis basim distincte attingentibus ; 
scutello pronoto vix longiori, tricarinato ; tegminibus brevibus, nigris, apicibus albidis ; venis elevatis ; 
abdomine levi, nitido ; pedibus testaceis ; femoribus piceis. 
Mas pygofero subtriangulari, tub& anali permagné, stylo anali parvo; stylis sat latis fere in eodem plano 
jacentibus, ad apicem obtuse curvatis, nitidis. 
Femina ovipositore modico. 
Black, more or less testaceous in front, with the vertex narrow ; forehead about three times as long as broad, 
with the central and side-keels whitish-testaceous ; pronotum long, with three strong keels, all reaching 
the basal margin; scutellum scarcely longer than the pronotum, tricarinate ; tegmina short, black, 
with the apex narrowly white, and with strong elevated veins; abdomen smooth and shining; legs 
testaceous, femora piceous. 
Male with the pygofer cubtriangular, if viewed from behind, with the anal tube very large and the anal 
style small; styles rather broad, lying almost in the same plane and forming nearly a straight line, 
obtusely curved minutely at the apex. 
Female with a comparatively short ovipositor. 
Long. 3 millim.; lat. ad hum. 14 millim. (¢ 9: brachypterous form only.) 
Hab. Mexico, Chilpancingo (H. H. Smith); Guaramana, San Isidro (Champion). 
In general appearance this insect closely resembles L. sagata, but differs in the 
shape of the head, and especially in the male characters. 
The following two genera are of uncertain position: Walker places Lhotala, 
apparently, with the Delphacide, near Bidis and Copicerus (= Jerala), but altbough 
there are two or three large spurs at the apex of the posterior tibie, the characteristic 
large serrulate movable spur of the Delphacide is wanting, and the antenne are not 
strongly developed as in that family: in some respects this genus is closely allied to 
Helicoptera, but it differs in the very much longer and larger pronotum and in the 
formation of the male and female organs. Most probably, however, Rhotala must be 
classed with the Cixiide. | 
The second genus, Syntames, seems to be allied to the Ricaniine, but it is without 
the characteristic transverse crenation of the costa, and must perhaps be referred to 
the Cixiide: the male organs, however, are not like those of the latter family. 
RHOTALA. 
Rhotala, Walker, Journ. Linn. Soc., Zool. 1. p. 152 (1857). 
In this genus the first joint of the antenne is very short, about as broad as long, and the second is almost as 
stout and twice the length of the first, the terminal seta being much longer than the two preceding 
joints; the head is small, very much narrower than the pronotum, which is very large and almost 
as long as the scutellum; the pronotum is strongly tricarinate; the tegmina overlap, as in Heltcoptera, 
