THE SUGAR-CANE LEAFHOPPER. 13 
Sugar Planters’ Experiment Station, mentions the doubtful origin 
and identity of the species.* Doctor Perkins again records the insect 
under the heading ‘‘The leaf-hopper of the cane” in December of 
the same year and says: “This small insect is highly injurious to 
cane and its destructiveness threatens to exceed that of the cane 
borer’ beetle.’”’? 
In response to repeated requests made to the department the 
writer was detailed earty in May, 1903, to make a report on the 
pest. On May 11, 1903, specimens were forwarded by the writer 
to Dr. L. O. Howard, Chief of the Bureau of Entomology, Wash- 
ington, D. C. Under date of June 1, 1903, Doctor Howard replied 
that the species was new to science and that there was in press a 
description of the insect under the name Perkinsiella saccharicida 
by Mr. G. W. Kirkaldy of the British Museum. 
DESCRIPTION OF THE LEAFHOPPER. 
The species was described by Mr. G. W. Kirkaldy in 1903 and rep- 
. resents a new genus which was named after Dr. R. C. L. Perkins. 
The description of the genus and species is taken from Mr. Kirkaldy’s 
article in The Entomologist, London, for July, 1903, pages 179-180, 
and is as follows: 
Perkinsiella, gen. nov. 
Closely allied to Arxopus Spinola, but distinguished by the first segment of the 
antenne being distinctly shorter than the second; distinguished from Dicranotropis 
Fieber, to which it bears some resemblance, by the form of the frons, and by the 
flattened apically dilated first segment of theantennz. Type, P. saccharicida Kirkaldy. 
Second segment of antennal peduncle about one-half longer than the first; flagel- 
lum about one-third longer than the entire peduncle, first peduncular segment much 
wider at apex than basally, flattened and explanate; second segment nearly as wide 
at base as the apex of the first segment [in Arxopus it is much narrower, while the first 
segment is more parallel-sided]. Exterior longitudinal nervure of corium forked near 
the base, and its exterior branch forked near its middle; interior longitudinal nervure 
forked near the apex. Membrane with six nervures, the fourth (commencing inwardly) 
forked; the first area has an incomplete nervure reaching only to the middle. Other 
characters as in Arxopus. 
P.. saccharicida, sp. nov. 
Long-winged form $ 9 .—Tegmina elongate, narrow, extending far beyond apex of 
abdomen, interior half of clavus and corium more or less faintly smoky, a long dark 
smoky stripe on middle of membrane, three or four of nervures of the latter smoky at 
apex. 
Short-winged form, 9 —Tegmina reaching only to base of fifth segment, costa more 
arched, apex more rounded, neuration similar but shortened. Tegmina hyaline, 
colourless; nervures pale testaceous brownish, with blackish brown non-piligerous 
dots (in both forms). 

a Ecxart, C. F.—Precautions to be observed with regard to cane importations. 
<Report to Hawaiian Sugar Planters’ Association, May 9, 1902, p. 5. 
b Perxrys, R. C. L.—Notes on the insects injurious to cane in the Hawaiian Islands. 
<Hawaiian Planters’ Monthly, vol. 21, no. 12, pp. 593-596, December, 1902. 
