PHTHIA.—AMBLYOMIA. . 129 
Hab. Norra America, Texas 8, Lower California §—CEnTRAL AMERICA’; Mexico3?7 
(coll. Sallé), Yaqui river®; Guaremata, San Gerdénimo, Duefias, Zapote, San Juan 
(Champion); Honpuras*; Costa Rica, Irazu (Rogers)—Weust Inpies 48, Cuba®78, 
Antigua !; Cotompia®’, Bogota’; Gutana, Cayenne®; Brazin?78, Para’, Madeira, 
river Amazons (coll. Dist.), Rio Janeiro’; ARGENTINE REPUBLIC ®. 
This species, as the extent of the synonymy would indicate, is very variable in its 
colour and markings. Prof. Uhler, who has had opportunity of examining fresh or 
living specimens of the insect, remarks, “In the fresh full-coloured varieties the bright 
orange bands of the pronotum contrast richly with the vivid steel-blue of the ground- 
colour.” This variable character existing in the northern forms of the species is also 
recorded from its extreme southern area. Berg examined thirty-three Argentine 
specimens, and remarks upon their variability of coloration, especially on the pronotum 
and abdomen. 
| AMBLYOMIA. 
Amblyomia, Stal, En. Hem. i. p. 171 (1870). 
I have not seen an example of this genus. ‘The differences which separate Ambly- 
omia from Phthia are, as described by Stal, the rounded and non-prominent lateral 
angles of the pronotum, and “ pedibus posticis crassioribus, brevioribus, tibiis posticis 
femoribus brevioribus, tarsisque crassioribus et brevioribus divergens.” Only one species 
is enumerated, which is here included. 
1. Amblyomia bifasciata. 
Amblyomia bifasciata, Stal, En. Hem. i. p. 172. 1°. 
Hab. Mexico 1. 
This species is to me quite unknown; and I have been unable to see or obtain a 
drawing of the type, as Dr. Aurivillius has written to me:—“ Amblyomia bifasciata 
is not to be found in our Museum. The words ‘(Mus. Holm.)’ in the ‘ Enumeratio’ 
may be incorrect, or the type may be lost.” 
Division SPARTOCERARIA. 
Spartocerida, Dall. List Hem. ii. p. 369 (1852). 
Spartocerida, Stal, Ofv. Vet.-Ak. Férh. 1867, p. 545. 
Spartocerina, Stal, En. Hem. i. p. 172 (1870). 
Spartoceraria, Berg, Hem. Argent. p. 75 (1879). 
This division at present comprises five Neotropical genera, the area of a very few 
species being extended into the Southern Nearctic Region. The femora are slender 
and rarely spined; the head is quadrate and emarginate in front, with the antenniferous 
BIOL. CENT.-AMER., Rhynch., June 1881. | 17 
