ARVELIUS.—PHALCCUS. 83 
Acanthosoma gladiator, Burm. Handb. ii. p. 359. 17; Blanch. Hist. iii. p. 146. 1°; H.-S. Wanz. 
Ins. vii. p. 5. 
Acanthosoma luteicornis, Hope, Cat. i. p. 30°. 
Arvelius gladiator, Spin. Ess. Hém. p. 346 ; H.-S. Wanz. Ins. v. p. 104, f. 557, 558°. 
Arvelius albo-punctatus, A. & S. Hist. des Hém. p. 150.1; Dall. List Hem. i. p. 302.1°; Stal, 
Stett. ent. Zeit. xxiii. p. 108.917; En. Hem. ii. p. 47.1°; Berg, Hem. Argent. p. 59. 73°; 
Uhler, Bull. U.S. Geol. & Geogr. Surv. ii. p. 290°; Town. Glover, Ill. Ins. Ord. Hem. 
p- 25, t. viii. f. 29. 
Pentatoma (Arvelius) albopunctata, Guér. in Sagra’s Hist. Cuba, Ins. p. 374". 
Stoll, Pun. f. 12. 
Hab. Nortn America, Texas !°, California 1°, Arizona 1°, Florida }°.—Mexico 57 & 10 
(Mus. Berol.); GuateMaa, Capetillo, San Gerénimo, Tamahu, Cubilquitz, San Juan, 
and La Tinta (Champion); Costa Rica, Caché (fogers); Panama (coll. Dist.).— 
ANTILLES, Cuba®”"™, St. Domingo, Jamaica®, St. Vincent*, Trinidad (col/. Dist.) ; 
CotomBia®8; Guiana, Demerara? (coll. Dist.); Braziu?°°8, Rio Janeiro’; ARGENTINE 
REPUBLIC ®. . | 
This is an extremely variable form. Stal remarks, “ Variat antennis pictura nigra de- 
stitutis.” It also varies in size, colour, and in the amount and nature of its punctuation. 
In colour it is usually luteous, sometimes varying more or less to bright pale green; and 
as regards the punctuation, Prof. Uhler states, as the result of an examination of his 
own series, “ Punctures and ruge are coarser or finer according to the size of the speci- 
men.” This peculiarity I have not found to obtain in my own specimens or in those 
examined by me. 
PHALCECUS. 
Phalecus, Stal, Stett. ent. Zeit. xxiii. p. 98, nota (1862) ; En. Hem. ii. p. 47 (1872). 
The elevated meso- and metasternum, with the depressed body and triangular head, 
of which the lateral lobes are the longest, are characters which at once denote this well- 
marked genus. It is Neotropical in its habitat, but one species having hitherto been 
recorded, the P. pustulatus, De Geer. A second species is now added. 
1. Phalecus decoratus, n. sp. (Tab. VII. fig. 9.) 
Head piceous, with lateral margins and base of central lobe luteous, margins reflexed; antenne luteous, spotted 
with fuscous; first and third joints shortest, the last longer than the first; second, fourth, and fifth 
subequal in length. Pronotum piceous, with the following luteous markings—one on each lateral margin, 
two on anterior margin, a fainter waved broken transverse fascia across disk between lateral angles, 
between which and anterior margin are five irregular spots ; lateral angles slightly prominent. Scutellum 
and corium black with cupreous reflections, the first with five bright luteous spots, one in each basal angle, one 
about the centre of each lateral margin, and one at the apex, central two the smallest. Corium with the basal 
margin narrowly luteous, and three submarginal bright luteous spots arranged longitudinally. Membrane 
fuscous. Abdomen above piceous, connexivum luteous, apical segmental margins black. Underside of body 
and legs luteous ; sternum and abdomen with a broad marginal piceous band, which contains a marginal 
row of luteous spots; rostrum luteous, with the tip narrowly black, about reaching the intermediate coxe. 
Long. 8-10 millim. 
11* 
