MONONYX. 351 
2. Mononyx fuscipes. (Tab. XX. figg. 21, 21 a,b, 9; 22,22a,6,¢; 23, nymph.) 
Mononyzx fuscipes, Guér. Rev. Zool. 1848, p. 114’; Stal, Berl. ent. Zeitschr. vii. p. 406°; Enum. 
Hemipt. v. p. 188°; Mont. Bull. Soc. Bucarest, viii. pp. 395, 4004. 
Mononyx badius, Herr.-Schaff. Wanz. Ins. ix. p. 27, t. 291. figg. 894, @°; Stal, Stett. ent. Zeit. 
1862, p. 459°; Uhler, Bull. U.S. Geol. & Geogr. Surv. i. p. 3377. 
Mononyx obscurus, Stal, Ofv. Vet.-Ak. Férh. 1854, p. 239°. 
Mononyz raptorius, Walk. Cat. Hemipt. Heteropt. viii. p. 171°; Uhler, P. Z. S. 1894, p. 223 
(nymph) (nec Fabr.) *’. 
Hab. Nortu America, California 7—Mexico 3-8 (Sadlé), Presidio de Mazatlan (Forrer) , 
Tepic (Schumann), Amula, Chilpancingo, Cuernavaca, Teapa (H. H. Smith), Orizaba 
(Sallé®, H. H. Smith, F. D. Godman), Cuesta de Misantla (M. Trujillo), Jalapa (Hige, 
FP. D. Godman), Oaxaca (Mus. Brit.®), Valladolid and Temax in Yucatan (Gaumer) ; 
GuaTemaLa®, San Gerdénimo, Purula, Panzos, Teleman, and Chacoj in Vera Paz, 
Guatemala city, El Reposo (Champion); Nicaracua, Mosquito coast®; Costa Rica 
(Biolley *, Pittier 4, Montandon*), Caché (Rogers); Panama’, Bugaba, Volcan de 
Chiriqui, David, Caldera, Tolé (Champion).—CotomBia!?4; AntILLEs, Grenada 1°. 
A common insect within our limits. Differs chiefly from M. nepeformis in the genital 
structure: in the male the last segment is small and placed considerably to the left of 
the longitudinal axis of the body, and the preceding ventral segment is foveate on the 
right side near the margin; in the female (fig. 21 a) the two triangular pieces forming 
the last segment are broader than long, and the sixth segment is not very deeply 
emarginate. Four females, from Presidio and Amula, differ from the rest in having 
the genital segment (fig. 210) very short; three of them were sent with males and 
females of MV. fuscipes from Presidio. We figure a clean female specimen from 
Guatemala, also some of the details of structure. 
The nymph (fig. 23) has been found at Bugaba and Caché, with the imaginal form. 
It has (as noted above) two long claws to the anterior tarsi; the joints of the inter- 
mediate and hind tarsi are fused into one; the third and fourth antennal joints are 
connate; and the ocelli are absent. 
3. Mononyx nepeformis. (Tab. XX. figg. 24, 3, 25, 2, genital segments.) 
Naucoris nepeformis, Fabr. Syst. Ent. p. 693 (1775) *; Syst. Rhyng. p. 111°. 
Mononyx nepeformis, Stal, Hemipt. Fabr. i. p. 184°; Enum. Hemipt. v. p. 188°; Mont. Bull. Soc. 
Bucarest, viii. pp. 395, 401°. 
Mononyz raptorius, Burm. Handb. der Ent. 11. 1, p. 201 (1835) °; Amyot et Serv. Hist. Nat. Ins. 
Hémipt. p. 426, t. 8. fig. 47; Herr.-Schaff. Wanz. Ins. ix. p. 27, t. 291. fig. 895 ° (nec Fabr.). 
Mononyzx bipunctatus, Stal, Ofv. Vet.-Ak. Férh. 1854, p. 239°; Berl. ent. Zeitschr. 1863, p. 405 *°. 
Hab. GuatTeMALa, Purula, Guatemala city (Champion) ; Costa Rica®, Alajuela (Orozco, 
in coll. Montandon).—CotomBia‘; Guianat®; Brazin3—!0; ARGENTINA®; ANTILLES ? 3, 
Antigua }. , 
