PROARNA. 13 
Tegmina pale hyaline; veins ochraceous, darker towards apex ; base and apex of first apical area, and transverse 
veins at base of second and third apical areas, broadly fuscous ; base of first ulnar area thickened, opaque, 
and fuscous. Wings pale hyaline, veins ochraceous. 
The face is globose, strongly transversely striated, but not sulcated longitudinally ; and in width it equals its 
distance from outer margin of eyes. The opercula are broad, not passing base of first abdominal segment, 
somewhat narrowed and almost meeting interiorly. (In the specimen figured the opercula are pale and 
unicolorous ; in other specimens they are inwardly and broadly margined with black.) 
Long. 14 to 16 millim., exp. tegm. 45 to 52 millim. 
Hab. Mexico (Mus. Berol.) ; Guatemata, Purula, Teleman (Champion); Costa Rica 
(Van Patten). 
This species is somewhat intermediate between P. sallai, Stal, and P. signifera, Walk. 
In general appearance it much resembles Selymbria modesta, Dist. A Guatemalan 
specimen is figured. 
5. Proarna signifera. (Tab. II. figg. 21, 21a, 213.) 
Cicada signifera, Walk. List Hom. Suppl. p. 22°. 
Hab. Mexico, Orizaba 1, Valladolid in Yucatan (Gaumer); GuatemMaa, Torola(Cham- 
pion). 
A Guatemalan specimen is figured, in which the neuration of the right and left-hand 
tegmina is asymmetrical. This is also the case with the Mexican type in the British 
Museum, and with several other specimens of this species which I have examined. 
6. Proarna maura, n. sp. (Tab. II. figg. 5, 5a, 5 4.) 
Body and legs black; frontal margin of head, posterior margin of pronotum, lateral margins of face, apices of 
_ femora, and bases of tibia dull obscure ochraceous ; eyes luteous; lateral margins of sternum broadly 
margined with white pile. Tegmina pale hyaline, veins fuscous; basal area, costal membrane, and 
transverse veins at bases of second and third apical areas black. Wings hyaline, veins fuscous, basal area 
black. 
Body very broad and robust, with the segmental apices acute; head, including eyes, much narrower than base 
of pronotum. Face with the sides strongly striated, centre not sulcated, its width equal to its distance 
from outer margin of eyes. Rostrum reaching posterior coxe. Opercula large, oblong, black, straight 
outwardly, rounded posteriorly, slightly overlapping at inner margins near base. 
Long. 25 millim., exp. tegm. 70 millim. 
Hab. Mexico (coll. Dist.), Valladolid in Yucatan (Gaumer). 
This species represents a distinct section of the genus, having the apices of the 
segments acute and the body very broad. This division, in every respect, including 
the black colour, exactly corresponds with a like divergence in the genus Cicada, as 
represented by C. robusta, Dist. 
7. Proarna longirostris, n. sp. (Tab. II. figg. 4, 4a, 43.) 
Closely allied to P. maura, Dist., but differs by the greater amount of the ochraceous markings on the pro- and 
mesonotum, in having a large ochraceous spot on each lateral margin of the abdomen above, and a small 
spot of the same culour on each side of the anal appendage, in the much smaller black basal area to the 
tegmina, and the almost absence of the same to the wings. The body beneath, including the legs and 
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