70 HEMIPTERA-HETEROPTERA. 
which I have seen, and which is contained in the Berlin Museum, is somewhat darker 
in colour throughout. 
LOXA. 
Lowa, Amyot et Serville, Hist. des Hém. p. 187 (1848); Dall. List Hem. i. p. 193 (1851) ; 
Stal, Ofv. Vet.-Ak. Férh. 1867, p. 525; En. Hem. ii. p. 37, note (1872). 
This genus is closely allied to the last, and is really separated by the apexes of the 
femora being armed above with a distinct spine; the body is also more convex and less 
flattened than in Chlorocoris. Numerous other minor details have been given; but it is 
questionable how far these may prove to be constant. Lowa is confined to Tropical 
America ; but only about one third of the total species enumerated have as yet been 
received from Central America. The Amazonian and Colombian subregions appear to 
be the home of this genus. It is also found in the Antillean subregion. 
1. Loxa flavicollis. 
Cimex flavicollis, Drury, Ill. Nat. Hist. Ins. ii. p. 67, t. 36. £. 4. 
Cimex albicollis, Fabr. Spec. ii. p. 347.51; Mant. ii. p. 285.59; Gmel. Syst. Nat. 1. 4, p. 2138. 
202; Fabr. Ent. Syst. iv. p. 98. 75; Syst. Rhynch. p. 160. 26; H.-S. Wanz. Ins. vi. p. 68. 
f. 634. 
Pentatoma viridis, Pal. Beauv. Ins. p. 111, Hém. pl. 8. f. 1’. 
Loxa flavicollis, A. & 8. Hist. des Hém. p. 187.1, pl. 3. f. 3a’; Dall. List Hem. i. p. 198. 1°; 
Uhler, Bull. U.S. Geol. & Geog. Surv. ii. p. 290*; Stal, En. Hem. ii. p. 36. 1°. 
Loxa virescens, A. & S. Hist. des Hém. p. 187. 2, pl. 3. f. 3. 
Pentatoma albicolle, H.-S. Wanz. Ins. vii. p. 94. 
Stoll, Pun. f. 196, 198, et 200. 
Hab. Nortu America, Texas*, New Mexico 4.—Mexico*; GuaTeMALA, Cubulco, Vera 
Paz (Champion); Panama (Boucard).— ANTILLES *, Cuba®, St. Domingo ', Jamaica; 
Guiana, Surinam ®, Cayenne?; Braziu?°, Rio Janeiro (coll. Dist.). 
The colour of this species varies from green to ochreous, some species being uni- 
colorous and others combining both the green and ochreous markings. 
2. Loxa affinis. (Tab. VI. fig. 22.) 
Lowa affinis, Dall. List Hem. i. p. 198. 2*; Stal, En. Hem. ui. p. 36. 2. 
Hab. British Honpuras, river Sarstoon (Blancaneaux) ; Guatemata, Zapote (Cham- 
pion); Panama (Boucard).—Brazit, Para’. 
This species is closely allied to the preceding; but, besides the differential characters 
given by Dallas, viz. the greater length of the pronotum and the shorter lateral pro- 
notal angles, the length of the rostrum is also a distinctive mark. In L. affinis this 
