Myrrs.—New Zealand Leaf-hoppers and Plant-hoppers. 415 
Hind tibiae armed externally with two rows of yellowish rather short 
spines with dark bases, about eight in one row and thirteen in the other. 
Internally a row of bristles. 
Frons shield-shaped, with cephalad portion somewhat pointed, passing 
caudad into a rounded swelling at each side, followed by slight constriction 
at 4, where the typical elliptical curvature is resumed. Pale-olivaceous 
slightly clouded with pale-brownish. Antennae-pits pale-brownish. 
Genitalia concolorous with rest of abdomen, except ovipositor, which 
is darker and projects slightly beyond ultimate ordinary tergite. 
L mm. 
One female. 
Karori, Wellington, February ; Mr. G. V. Hudson. 
Holotype in Myers collection, Biology Laboratory (No. 193). 
SuBraMity 2. CEPHALELINAE. 
Tribe DonvpiN1 Cogan, Ohio Journ. Sci., vol. 16, р. 184, 1916. 
Tribe CEPRHALELINI Kirkaldy, Bull. 3, H.S.P.A. Exp. Sta., p. 72, 1907. 
This interesting subfamily is closely related to the Jassinae, of which 
it is frequently ranked as a tribe. І follow Kirkaldy in elevating it to equal 
only on account of the elongate or foliaceous head—a characteristic of 
widely separated genera in other subfamilies—but also in the “ degradation 
of the flight-organs," the reduced venation, and the only feebly bristly 
tibiae. The hind tibiae of Paradorydium westwoodi F. B. White, however, 
bear, in addition to the bristles, a row of quite considerable spines. In 
connection with the reduced venation and alar degradation it is noteworthy 
that in Cephalelus hudsoni n. sp., although the tegmina are well developed 
and extend considerably beyond the abdomen, the wings are completely 
atrophied. | 
It is no exaggeration to say that the members of the two Cephaleline 
genera represented in New Zealand present as striking examples of Poulton 8 
“constant, special protective resemblance” as are to be found. With 
regard to the African Cephalelus infumatus Perch., the description of which 
would apply in essentials to our own species, Osborn noticed that “ the 
protective feature comes in from the fact that the aborted leaf-sheaths 
on the stem of the plant form sharp spines occurring at intervals along 
the length of the stem, and these are perfectly reproduced in the form and 
colour of the insect. So close is the resemblance that when a number of 
KEY ro GENERA OF NEW ZEALAND CEPHALELINAE. 
ns distinctly convex, often even strongly carinate 
Fro Paradorydium. 
Frons concave ; deeply excavated ephalelus. 
