CURICTA.—RANATRA. 353 
Nepa scorpio, Ferrari, Ann. k.-k. Naturh. Hofmus. iii. p. 191°. | 
Nepoidea montandoni, Martin, Bull. Soc. Ent. Fr. 1898, pp. 67, 68, fig. 1‘. 
Hab. Mexico (Sallé +, in Mus. Holm.'-*); Guatumata, near the city (Champion). 
Four specimens of this species, including both sexes, were found by myself in 
Guatemala. Martin’s figure‘ agrees exactly with the type of C. scorpio, which has 
been communicated by Dr. Aurivillius. The Mexican insects were both collected by 
Sallé. Stal’s type is figured. 
2, Curicta volxemi. 
Nepoidea volxemi, Mont. Ann. Soc. Ent. Belg. 1895, pp. 476, 477, fig. 6°. 
Hab. Mexico, Santa Cruz * (Van Volxem, in Mus. Roy. Belg..). 
Differs from C. scorpio in the much less constricted pronotum and the relatively 
shorter anterior tibiz. 
RANATRA. 
Ranatra, Fabricius, Ent. Syst. iv. p. 64 (1794) ; Fieber, Gen. Hydroc. p. 23, t. 3B (1851). 
A very widely distributed genus. The two species recorded from Central America 
are also found in the United States. The anterior femora are unidentate in R. fusca, 
and bidentate in FR. guadridentata. 
1. Ranatra fusca. | 
Ranatra fusca, Palis. de Beauv. Ins. Afr. et Amér. p. 2385, Hémipt. t. 20. fig. 11; Walk. Cat. 
Hemipt. Heteropt. vii. p. 189°; Uhler, Bull. U.S. Geol. & Geogr. Surv. i. p. 338°; in 
Kingsley’s Stand. Nat. Hist. ii. p. 254, fig. 317*; Proc. Calif. Acad. Sci. (2) iv. p. 292°. 
Hab. Nortu America ?, ‘Texas, Southern States and Atlantic region 34, Lower Cali- 
fornia 5.—-Mexico, Orizaba, Oaxaca (Sallé, in Mus. Brit.*), Valladolid and Temax in 
N. Yucatan (Gaumer),'Tabiin Yucatan (Godman); GuateMata, near the city (Champion); 
Panama, Volcan de Chiriqui 4000 feet (Champion). 
Central-American specimens do not differ from others from Florida, &c., in the 
British Museum. 
This insect differs from the European &. linearis in having the pronotum more 
elongate, and the meso- and metasternum differently formed: the intercoxal portion 
of the mesosternum is much broader; the metasternum is convex along the middle, 
and produced posteriorly so as to nearly cover the intercoxal portion of the abdomen, and 
grooved on each side between them (in /. dinearis the metasternum is flattened in the 
middle and not produced between the coxe, the intercoxal process of the abdomen 
* There are upwards of thirty places of this name in Mexico, so it is quite uncertain which is meant. 
BIOL. CENTR.-AMER., Rhynch., Vol. II., January 1901. 45 
