British Homoptera-Cicadina. 35 
ii. Arnysanus, Burm. (PI. IIL., fig. 12). 
Burmeister, Gen. Ins., ii. (1838). 
Body robust, somewhat rounded at the sides. Head with the 
eyes somewhat wider than the pronotum, obtuse in front; crown 
obtusely produced, convex above, ocelli near the eyes; frons wide, 
somewhat convex; clypeus wide, its base distinctly wider than the 
base of the lora; cheeks wide, reaching to the apex of the clypeus. 
Pronotum short, transverse, its sides not or only faintly margined. 
Elytra subcoriaceous, not overlapping at the apex, sides slightly 
rounded; five subapical areas; appendix wanting or extremely 
narrow; generally somewhat or even much shorter than the abdo- 
men, with very short apical areas, but occasionally longer than the 
abdomen, with the apical areas fully developed, in which case the 
elytra overlap somewhat at the apex, owing to the development of 
the appendix ; wings frequently much abbreviated. 
TABLE OF SPECIES. 
1 (2). Upper side rust-red, with or nae dark 
dark markings aa 1, russeolus. 
2 (1). Upper side not as above. 
3 (10), Dark markings of the crown a transverse 
line or lines, or entirely wanting. 
4 (9). Interocular line level with the apex of the 
inner margin of the eye. 
5 (8). Front of crown angular. 
6 (7). Species smaller, angle of crown more pointed, 
pronotum at least three times as broad as 
long.. : 2. brevipennis. 
7 (6). Species larger, 2 ARIES of crown ea pointed 
pronotum about twice as broad as long . . sordidus. 
8 (5). Front of crown roundly produced .. -- 4, Sahlbergi. 
9 (4). Interocular line placed considerably behind 
the apex of the inner margin of the eye 5. grisescens. 
10 (3). Crown with several black spots, but no 
transverse line. 
11 (16). Elytra more or less closely speckled with 
black. 
12 (13). Transverse nerve and the apices of the ane 
and axillary nerves milk-white .. -» 6. communis. 
13 (12). No milk-white spots on the elytra. 
14 (15). Length, 3—33 mm. Outer fen of geni- 
oo 
tal plates straight .. -- 7%. obscurellus. 
15 (14). Length, 44—53 mm. Gutes margin of 
genital plates gently convex _ obsoletus (var. piceus) | 
16 (11). Elytra not or scarcely speckled with black. 
17 (18). Frons suddenly narrowed at the level of the 
antennez. Species large and wide -- 8. obsoletus. 
18 (17). Frons regularly narrowed throughout. Spe- 
cies small and narrow ae ae -. 9. melanopsis. 
D2 
