20 HEMIPTERA-HETEROPTERA. 
therefore probable that Wolff, in confounding the two species, likewise copied the name 
of the habitat from Fabricius. | 
2. Homemus eenifrons. 
Scutellera enifrons, Say in Long. Exp. ii. p. 299. 2; Compl. Writ. i. p. 199. 2. 
Pachycoris exilis, H.-S. Wanz. Ins. iv. p. 5. f. 8346; Germ. Zeitschr. i. p. 98. 35. 
Homemus exilis, Dall. List Hem. i. p. 36. 1, pl. 1.f. 5. 
Homemus enifrons, Stal, En. Hem. i. p. 15; Uhler, Bull. U.S. Geol. & Geog. Surv. il. p. 272, iii. 
p- 865 ; Proc. Bost. Soc. Nat. Hist. xix. p. 368. 
Hab. Norra Amertca.—Mextco (Mus. Berol.); Guatamata, Capetillo (Champion). 
Specimens from Central America appear to be much smaller than more northern 
forms. Of these Uhler states that in general western mountain specimens are not so 
dull-coloured nor so broad as those which occur on the eastern side of the continent ; 
and in Maryland the species seems to affect the colder parts of the State, where the 
vegetation is from a week to ten days later in developing than in the lowlands of the 
warm areas. , 
3. Homzmus proteus, (Tab. II. figg. 3 & 4.) 
Homemus proteus, Stal, Stett. ent. Zeit. xxiii. p. 82. 117. 
Hab. Mexico .—Cotomsia (Mus. Holm.). 
The following are the described varieties of this form :—_ 
Var. a. 
Obscure punctatus, supra unicolor, pallido conspersus. 
Var. O. 
Ut var. a, sed scutello utrimque ante medium macula mediocri ornato. 
Var. ¢. 
Thorace utrimque vittis vel fasciis duabus valde obliquis, fuscis, angustis; scutello basi interrupte infuscato, 
posterius maculis duabus subconnexis majusculis fuscis. 
Var. d. 
Ut var. c, sed pictura thoracis distinctiore, scutello utrimque vittis duabus fuscis obliquis ornato. 
The forms figured are the type vars. a@ and c, in the collection of Dr. Signoret, who 
has in the most liberal and scientific spirit placed the whole of Stal’s types in my hands 
for examination and illustration. 
SPHYROCORIS. 
Sphyrocoris, Mayr, Verh. zool.-bot. Ges. Wien. xiv. p. 904 (1864); Reise der Freg. Novara, Hem. 
p. 16 (1866). 
The three species of this genus at present known are found in Central America, one 
e 
