TETTIGONIA. 253 
47, Tettigonia sirena. (Tab. XVI. fig. 18.) 
Tettigonia sirena, Stal, Stett. ent. Zeit. xxv. p. 76°. 
Hab. Mexico (Mus. Holm. & Mus. Vind. Ces.). 
This species is rather closely related to the preceding, and both are akin to TJ. stali; 
neither of them appears to be represented in our collection. : 
A specimen from the Vienna Museum is figured. 
48. Tettigonia albomaculata., (Tab. XVI. fig. 19.) 
Tettigonia albomaculata, Distant, Ent. Monthly Mag. xvi. p. 62°. 
Hab. Costa Rica, Rio Sucio and Volcan de Irazu 6000 to 7000 feet (Rogers '). 
In this species the head and pronotum are black, and the tegmina are red, with a 
number of distinct white spots; the head is only a little produced before the eyes, and 
is broadly and regularly rounded in front. | 
A specimen from Rio Sucio is figured. 
49. Tettigonia tripunctata. 
Tettigonia tripunctata, Fitch, Fourth Ann. Report State Cab. Nat. Hist. p. 55 (1851)*; Sign. Ann. 
Soc. Ent. Fr. 1854, p. 23, t. 2. fig. 12’. 
Tettigonia nigrifascia, Walk. List of Homopt. Ins. iii. p. 776°. 
Tettigonia pallida, Walk. loc. cit. p. 776°. Q 
Tettigonia albida, Walk. loc. cit. p. 777°. y) 
Hab. Norta America, New York !.—Mexico?-> (Mus. Vind. Ces.; Boucard, in 
Mus. Holm.), Omilteme in Guerrero, Cuernavaca in Morelos (H. H. Smith), Guana- 
juato (EZ. Dugés, in Mus. Roy. Belg.), Orizaba (Bilimek, H. H. Smith, & F. D. Godmai) ; 
GUATEMALA, Quezaltenango 7800 feet, Duefias (Champion). 
This species varies considerably in colour and to a certain extent in the markings. 
It may be known from its allies by the very short head, which is scarcely produced 
before the eyes and is rounded in a very obtuse angle; the ground-colour is either 
reddish, greyish-brown, or yellowish-white. There is an insect in our collection from 
Mexico city which appears to be a variety of this species, but it has the head and 
pronotum covered with large black spots and markings; I cannot, however, separate it 
structurally. 
50. Tettigonia uniguttata. 
Tettigonia uniguttata, Walk. List of Hompt. Ins. ii. p. 778°. 
Hab. Mexico}. 
This species differs from the preceding chiefly in having the head more conical, the 
vertex flatter, and the sculpture of the pronotum less evident; the head, pronotum, 
