PELOCORIS. 361 
(Champion); Panama, David, Volcan de Chiriqui, Panama city (Champicn), Matachin 
(coll. Distant), Darien (Geay*)—VENEZUELA®; Uruauay®; Antinimst58, Cuba 37, 
Grenada, Guadaloupe‘, &c. 
A common species within our limits, and varying from 9-113 millim. in length. It 
is quite unrecognizable from Palisot de Beauvois’s figure. There are specimens of it 
from North America in the British Museum, and also others from the Island of 
Grenada determined by Prof. Uhler. Most of the Central-American examples belong 
to the var. d7impressus, which has a darker scutellum and a dark streak on the 
embolium ; the two forms were found in company at Paso Antonio. The male has the 
fifth and following abdominal segments freely movable, the fifth being attached to the 
fourth in the centre only; the fifth and sixth ventral segments are each separated 
into three pieces, the convex central portion being divided from the lateral pieces by a 
suture on each side. The long genital segment is divided into two in this sex only. 
The fourth and fifth connexival segments are more acutely produced at the posterior 
angles in the male than in the female. An antenna is figured on our Plate (fig. 17 d). 
2. Pelocoris nitidus. 
Pelocoris nitidus, Mont. Bull. Soc. Bucarest, vii. p. 286 (1898) °. 
Hab. Panama, Laguna de Pita, Isthmus of Darien (Dr. Festa!).— VENEZUELA, 
Llanos!; Brazit, Minas Geraes!. 
Differs from P. femoratus in having the narrow basal portion of the pronotum 
smdoth. M. Montandon has lent me one of the types for examination. 
3. Pelocoris binotulatus. 
Naucoris binotulatus, Stal, Rio Jan. Hemipt. 1. p. 83°. 
Pelocoris binotulatus, Stal, Enum. Hemipt. v. p. 1447; Mont. Bull. Soc. Bucarest, vit. p. 286 
(1898) *. 
Hab. Panama, Laguna de Pita, Isthmus of Darien (Dr. Festa*).—Brazit, Rio 
Janeiro !—3; ARGENTINA °. 
Differs from P. femoratus, according to Montandon , in having the surface of the 
head and pronotum more densely punctured with brown, the anterior femora also 
marked with brown. 
Fam, BELOSTOMIDA. 
This family includes the largest known forms of Heteroptera, and it is well repre- 
sented in America, both in the tropical and temperate regions. The Belostomide, as 
a whole, were not dealt with by Stal, but they have been monographed by Mayr 
BIOL. CENTR.-AMER., Rhynch., Vol. II., January 1901. 46 
