GELASTOCORIS. 349 
4. Gelastocoris flavus. 
Galgulus flavus, Guér. Icon. Régne Anim., Ins. p. 351, t. 57. figg. 4, 4a-c'. 
- Hab. Costa Rica, Talamanca (Pittier, in coll. Montandon); Panama (Boucard), David, 
Tolé (Champion), Colon.—Souta America to Brazil1, Peru, and Bolivia. 
We possess three specimens of this species from within our limits, and two others 
from Costa Rica belonging to M. Montandon have been seen. It has the pronotum 
narrower than the elytra, with the sides bisinuate, the lateral angles subtruncate and 
strongly oblique on their anterior edge. Guérin’s figure, it may be noted, represents 
the base of the pronotum as nearly straight, whereas in our insect it is strongly 
trisinuate. 
5. Gelastocoris vicinus. 
Gelastocoris vicinus, Mont. in litt. 
Hab. Nortu America, Southern and Western United States.—Mexico (Sallé, in Mus. 
Paris.); Nicaracua, Chontales (Janson); Costa Rica, San José (Pittier), La Calera 
de San Ramon, Alajuela (Orozco), El Coronel (Biolley); Panama, Bugaba, Volcan de 
Chiriqui, Tolé (Champion).—Sovutn America to Brazil. 
M. Montandon has sent us for examination numerous specimens of this insect from 
Costa Rica, and also one from Mexico, and we have many others from Nicaragua and 
Chiriqui agreeing with them. It is very like G. variegatus, but has the foliaceous 
lateral angles of the pronotum more oblique in front (instead of subtransverse) and less 
coarsely crenate. The pronotum is strongly constricted at the sides behind the anterior 
angles, the margins being subparallel in front. The general coloration is usually more 
obscure than in G. variegatus. G. vicinus is the only species of the genus found by 
myself at elevations above 2500 feet on the slope of the Volcan de Chiriqui. 
6. Gelastocoris variegatus. (Tab. XX. figg. 19, 9; 20, 3.) 
Galgulus variegatus, Guér. Icon. Régne Anim., Ins. p. 852°; Uhler, Bull. U.S. Geol. & Geogr. 
Surv. i. p. 336°; Proc. Calif. Acad. Sci. (2) iv. p. 290°. 
Galgulus nebulosus, Stal, Enum. Hemipt. v. p. 187 (nec Guér.) *. 
Hab. Nort America, Southern and South-western United States 2, Lower California 3. 
—Me_xico (Sallé), Orizaba and San Marcos (Bilimek, in Mus. Vind. Ces.), Atoyac in 
Vera Cruz (Schumann), Teapa in Tabasco (H. H. Smith), Campeche (Perbosc 1); 
GuaTEMALA, Escuintla (Mus. Vind. Ces.), Guatemala city (Champion); Costa Rica, 
Boca Culebra (2. Montandon); Panama, Tolé, San Feliz (Champion).—Amazons; 
ARGENTINA; ANTILLES, Cuba 2. 
This is the handsomest species of the genus, the spots on the elytra being well- 
