PACHYARCHES.—EUDIOPTIS. 229 
me do not show any variation. We have received numerous examples from Mexico, 
but from Guatemala I have seen one only. 
2. Pachyarches imitalis. 
Margarodes imitalis, Guen. Sp. géa. des Lép. viii. p. 306°. 
Margaronia imitalis, Walk. Cat. xviii. p. 520’. 
Pachyarches imitalis, Leder. Wien. ent. Monats. vii. p. 398 *. 
Hab. Muxico, Cordova (Riimeli), Jalapa (M. Trujillo), Paso de San Juan in Vera 
Cruz (Schaus); Costa Rica, Candelaria Mts. (Underwood); Panama, Chiriqui (Ribbe, 
in mus. Staudinger).—West Coast or America (Kellett & Wood”); CotomBia; VENE- 
ZUELA 2; Ecuapor; BraziL, Rio Janeiro?; ANTILLES, Haiti! , San Domingo ?. 
This species is allied to the preceding, but may be distinguished from it by its smaller 
size and paler colour. We have a fair series of specimens, which vary slightly, those 
from Ecuador in my own collection being rather darker than any I have seen from 
our region. 
EUDIOPTIS. 
Eudioptis, Hiibner, Verz. bek. Schmett. p. 359 (1816). 
Phakellura, Westwood, Introd. Mod. Class. Ins. ii. p. 401 (1840) ; Guenée, Sp. gén. des Lép. viii. 
p. 294. 
Phacellura, Lederer, Wien. ent. Monats. vii. p. 400 (1863). 
This genus is of considerable extent, and the species are very widely distributed over 
the globe. 
1. Eudioptis hyalinata. 
Phalena Geometra hyalinata, Linn. Syst. Nat. 12th edit. i. 2, p. 874 (1767) °. 
Pyralis hyalinata, Poey, Cent. Lép. Cuba, 2° Décade, fig. (1882) °. 
Phakellura hyalinatalis, Guen. Sp. gén. des Lép. viii. p. 296°; Walk. Cat. xvili. p. 510°. 
Phacellura hyalinatalis, Leder. Wien. ent. Monats. vii. p. 400°. 
Phakellura hyalinata, Snell. Tijdschr. voor Ent. xviii. p. 284°. 
Eudioptis hyalinata, Grote, Check-list of N. Am. Moths, p. 54”. 
Phalena Pyralis marginalis, Cram. Pap. Exot. iv. p. 160, t. 371. fig. D*®; Stoll, ibid., Suppl. v. 
p. 110, t. 22. figg. 9 (larva), 9 K (cocoon) *. 
Phacellura marginalis, Leder. Wien. ent. Monats. vii. p. 401”. 
Pyralis lucernalis, Hibn. Europ. Schmett. vi. Pyral. t. 17. fig. 108°. 
Eudioptis lucernalis, Hitbn. Verz. bek. Schmett. p. 359 ©. 
— Hab. Nortu America 37.—Mexico (Boucard, in mus. D.), Presidio, Durango (Lorrer), 
Paso de San Juan and Rinconada in Vera Cruz (Schaus), Cordova (imeli), Jalapa 
(M. Trujillo), Vera Cruz, Venta de Zopilote in Guerrero, Teapa in Tabasco (//. H. 
Smith), Temax in North Yucatan (Gaumer); British Honpvras, San Pedro (Whitely, 
in mus. D.); GuaremMaa, San Gerénimo and Tamahu in Vera Paz, San Isidro, El 
Reposo (Champion); Honpuras (Dyson*); Costa Rica, Volcan de Irazu 6000 to 
