DISCOCEPHALA.—DINOCORIS. 45 
A. Lateral margins of the head distinctly sinuated. 
1. Discocephala humilis. (Tab. IV. fig. 22.) 
Discocephala humilis, Herrich-Schaffer, Wanz. Ins. vii. p. 39, f. 7161; Fieb. Rynch. p. 30. 3; Stal, 
Hem. Fabr. i. p. 18. 6. 
Discocephala (Platycarenus) humilis, Stal, En. Hem. ii. p. 6. 5’. 
Hab. Guatemata, Capetillo and San Juan, Vera Paz (Champion); Panama (coll. 
Dist.).—Cotomsia! 2. 
2. Discocephala notulata. (Tab. V. fig. 1.) 
Discocephala notulata, Stal, Stett. ent. Zeit. xxiii. p. 96. 50'; Hem. Fabr. i. p. 18. 7. 
Discocephala (Platycarenus) notulata, Stal, En. Hem. u. p. 6. 4’. 
Hab. Mexico}? (coll. Sign.). 
This species is closely allied to the preceding, D. humilis, H.-S., but differs in the 
absence of the strongly marked transverse impression to the pronotum, and in not having 
the anterior marginal angle of the pronotum rounded as in that species. 
B. Lateral margins of the head slightly and indistinctly sinuated. 
3. Discocephala clypeata. (Tab. VI. fig. 1.). 
Discocephala clypeata, Stal, Stett. ent. Zeit. xxiii. p. 96. 51; Hem. Fabr. i. p. 18. 8. 
Discocephala inobtrusa, Walk. Cat. Het. i. p. 183. 3°. 
Discocephala (Platycarenus) clypeata, Stal, En. Hem. ii. p. 6. 6°. 
Hab. Mexico1 (coll. Sign.), Oaxaca, Orizaba, Vera Cruz?; British Honpuras, Rio 
Hondo (Blancaneaux); Panama, Matachin (Dr. Thieme, coll. Oberthiir). 
4. Discocephala marginella. (Tab. V. fig. 2.) 
Discocephala (Platycarenus) marginella, Stal, En. Hem. i. p. 6. 7). 
Hab. Mexico!; Guaremaza, Capetillo and San Juan, Vera Paz (Champion). 
This species is very closely allied to the preceding; but, from an examination of 
a typical specimen forwarded to me from the Stockholm Museum with one of 
D. clypeata, kindly lent me by Dr. Signoret, I find the differences are well pointed 
out by Stal; the principal and guiding one, however, is the impunctate margin of the 
pronotum and the base of the corium. 
DINOCORIS. 
Dinocoris, Burm. Handb. ii. 1, p. 363 (1835), partim; H.-S. Wanz. Ins. iii. p. 65 (1836) ; Stal, 
En. Hem. ii. p. 7 (1872). | 
Empicoris, Spin. Ess. Hém. p. 282 (1837), partim. 
Cataulax, A. et S. Hist. des Hém. p. 111 (1843), nec Spin. 
Mecistorhinus, Dall. List Hem. i. pp. 152, 162 (1851) ; Stal, Ofv. Vet.-Ak. Férh. 1867, p. 501. 
Antiteuchus, Dall. List Hem. i. pp. 152, 168 (1851) ; Stal, Ofv. Vet.-Ak. Forh. 1867, p. 501. 
