182 | | HEMIPTERA-HETEROPTERA. 
13. Lygeus pyrrhopterus. (Tab. XVII. fig. 6.) 
L. (Ochrostomus) pyrrhopterus, Stal, En. Hem. iv. p. 110. 40°. 
Ochrostomus pyrrhopterus, Uhler, Bull. U.S. Geol. & Geog. Surv. ii. p. 303. 1”. 
Hab. Norra America, Texas Mexico ! 2, Tacubaya (Bilimek, Mus. Vind. Cos.). 
The figure is from a Mexican typical specimen in the Stockholm Museum. As Stal 
remarks, this species is very likely to be confounded with L. bistriangularis; but, in 
addition to the subgeneric characters, it is smaller (5 to 6 millim. in length), and the 
rufous colour is much more obscure. The black vitte near the lateral margins of the 
abdomen beneath, as described by Stal, are very inconstant, and only exist in one 
specimen of the series now before me. 
14. Lygeus dispar. (Tab. XVIII. fig. 5.) 
Lygeus (Ochrostomus) dispar, Stal, En. Hem. iv. p. 110. 42°. 
Hab. Panama, Caldera, David (Champion).—Co.omBIA, Bogota '. 
This is a very variable form, though I have felt little hesitation in identifying the 
Central-American specimens as belonging to Stal’s species. All the specimens now 
before me have the pale veins to the corium—a variable character mentioned by Stal. 
The Panama specimen figured agrees with the description in having only the apical 
margin of the scutellum luteous; in the remainder of the series some have an additional 
pale central carinate line, and others the entire scutellar margin luteous. | 
15. Lygeus thoracicus. (Tab. XVI. fig. 16.) 
Lygeus thoracicus, Stal, Stett. ent. Zeit. xxiii. p. 309. 201". 
L. (Ochrostomus) thoracicus, Stal, En. Hem. iv. p. 110. 45. 
Hab. Mexico!; Guatemata, San Gerdénimo (Champion). 
The specimen figured is from Guatemala, and measures in length 8} millim. The 
type, in the collection of Dr. Signoret, and which I have had the privilege to examine, 
has only a length of 7 millim. The species therefore varies considerably in size. 
16. Lygeus plagiatus. (Tab. XVIII. fig. 11.) 
Head black; pronotum red, with two black spots on disk and two slightly waved, short transverse streaks at 
base. Scutellum black. Corium dark fuscous, lateral margins (broadest at base), apical, and claval inner 
and apical margins narrowly red. Membrane black. Body beneath and legs black; lateral margins to 
prosternum widely and angularly red; a narrow obscure central longitudinal red line to abdomen; 
segmental incisures and lateral margins very narrowly and obscurely ochraceous. Rostrum black, 
and reaching posterior cox. Antenne black. 
Long. 10 millim. 
Hab. Mexico, Orizaba (Bilimek, Mus. Vind. Ces.). 
This species has the pronotum marked above as in L. nigriguttulus, Stal; but in 
shape and general coloration it is more closely allied to LZ. thoracicus, Stal. 
