AETHALION. 171 
Aithalion, Amyot et Serville, Hist. Nat. des Ins. Hémipt. p. 556 (1851); Signoret, Ann. Soc. Ent. 
Fr. sér. 2, ix. p. 670; Stal, Ofv. Kongl. Vet.-Ak. Forh. 1869, p. 296. 
This genus contains upwards of twenty species, all from Tropical South America ; 
some of these, however, are very closely related and are apparently synonymous. They 
are of oblong form, with prominent eyes, which project plainly beyond the sides of the 
metopidium, and with a convex and transversely hexagonal pronotum, which is rounded 
at the base; the elytra are more or less strongly reticulate, with the veins strong and 
raised; and the legs are usually banded with black or fuscous. 
“ 1, Mthalion reticulatum. (Tab. X. figg. 18, 18a.) 
Cicada reticulata, Linn. Syst. Nat. 12th ed. i. 2, p. 707 (1767) *. 
Tettigonia reticulata, Fabr. Syst. Rhyng. p. 41%. 
Lystra reticulata, Fabr. loc. cit. p. 60°. 
Aithalia reticulata, Germ. Mag. der Ent. iv. p. 95 *. 
Aithalion reticulatum, Am. et Serv. Hist. Nat. Ins. Hémipt. p. 557°; Walk. List of Homopt. Ins. 
iii. p. 646°. 
Tettigonia minuta, Fabr. Ent. Syst. iv. p. 267. 
Aithalion bivittatum, Walk. List of Homopt. Ins. iii. p. 649°. 
Aithalion parallelum, Sign. Ann. Soc. Ent. Fr. sér. 2, ix. p. 677 (1857) ’. 
La Cigale du citronnier, Stoll, Cig. p. 59, t. 14. fig. 74°. 
Hab. Costa Rica (Van Patten); Panama, Volcan de Chiriqui 2000 to 3000 feet 
(Champion); CentraL America (Mus. Vind. Ces.).—Sourn America?; CoLomsia °8 ; 
VENEZUELA 8, Caracas 4+; Gurana, Surinam 3410; Amazons 9, Para; Braziu 45°, 
A specimen from the Volcan de Chiriqui is figured. 
~ Var. vitticolle. (Tab. X. figg. 19, 19a.) 
Zthalion vitticollis, Stal, Ofv. Kongl. Vet.-Ak. Férh, 1869, p. 2977. 
Hab. Panama, Bugaba (Champion).—Cotompia, Bogota; VENEZUELA. 
The specimens of this variety in the Vienna Museum collection are smaller and 
lighter, and more strongly marked with black bands; intermediate examples occur 
between the type and the variety, with the stripes partly obsolete or two in number 
instead of four on the pronotum as in the type. A specimen from Bugaba is 
figured. 
> Var. albo-nervosum. 
Asthalion albo-nervosum, Blanch. in d’Orbigny’s Voyage dans l’Amér. mérid. vi. 2, p. 221, t. 31. 
fig. 6°; Sign. Ann. Soc. Ent. Fr. sér. 2, ix. p. 675%. 
Asthalion simile, Sign. loc. cit. p. 674. 
Aithalion vicinum, Sign. loc. cit. p. 674°. 
¥922 
