188 HEMIPTERA-HETEROPTERA. 
margins and apical claval margins narrowly luteous. Membrane black (its apex mutilated). Underside 
of body and legs fuscous; buccule, anterior margin to prosternum, acetabula, posterior margins to pro-, 
meso-, and metasternum, coxe, bases of femora, and lateral-margin of abdomen luteous. Lateral margins 
of sternum yellow, much the broadest at base of prosternum. Rostrum and antenne fuscous, the former 
reaching posterior coxe. 
Long. 43 millim. 
Hab. Mexico, Cuernavaca (Bilimek, Mus. Vind. Ces.). 
This species is apparently (the apex of the membrane being mutilated) somewhat 
allied to L. vittiscutis, Stal. | 
35. Lygeus variegatus. (Tab. XVIII. fig. 9.) 
Cimex variegatus, De Geer, Mém. ii. p. 342, t. 34. f. 23. 
Cimex erythrochlorus, Gmel. Syst. Nat. i. 4, p. 2180. 453. 
Lygeus pulcher, Fabr. Syst. Rhynch. p. 225. 104. 
Lygeus variegatus, Dall. List Hem. ii. p. 589. 21°. 
L. (Lygeus) variegatus, Stal, Hem. Fabr. i. p. 71. 4. 
M. (Melanocoryphus) variegatus, Stal, En. Hem. iv. p. 112. 5’. 
Hab. Panama, Buguba, Chiriqui (Champion).—Norru Braziu?, Para’. 
Body and legs ochraceous. 
36. Lygeus aureus, n. sp. (Tab. XVIII. fig. 13.) 
Body above dull ochraceous; corium and lateral angles to pronotum bright ochraceous. Membrane black. 
Underside of body and legs dull ochraceous. Abdomen (excluding apex), lateral angles of prosternum, 
and lateral margins of meso- and metasternum bright ochraceous. Rostrum and antenne dull ochraceous, 
the former reaching posterior coxa. 
Long. 6 millim. 
Hab. Mexico, Orizaba (Bilimek, Mus. Vind. Cas.). 
I place this peculiarly and distinctly marked species at the end of the Central- 
American species of the genus Lygeus. 
ACROLEUCUS. 
Acroleucus, Stal, En. Hem. iv. pp. 99 & 114 (1874). 
This genus differs primarily from Lyg@us in having the membrane black or fuscous, 
with a broad pale apical margin, or a triangular apical spot of the same colour. Other 
characters relied upon by St&l are—‘ Femoribus inermibus” and ‘“Capite interdum 
pone oculos tumescente.” 
Acroleucus appears to be confined to the Neotropical Region, but is more numerously 
represented south of Central America. 
1. Acroleucus subniger, n. sp. (Tab. XVIII. fig. 10.) 
Head, pronotum, scutellum, and body beneath red. Apex of central lobe to head, eyes, a transverse fascia at 
base of pronotum, corium (excepting base), legs, and antenne black. Base of corium and base of first 
