174 . HETEROMERA. 
PALORUS. 
Palorus, Mulsant, Col. de France, Latigénes, p. 250. 
This genus contains a single cosmopolitan species, now introduced into many distant — 
parts of the world. 
1. Palorus melinus. 
Hypophieus melinus, Herbst, in Fuessly’s Archiv, v. p. 37, t. 21. figg. B. 0. 
Hypophleus depressus, Fabr. in Schneider’s Neu Mag. Ent. i. 1, p. 25. 
Ips unicolor, Oliv. Ent. ii. 18, p. 12, t. 2. f. 8. . 
Hypophleus (Palorus) depressus, Muls. loc. cit. p. 250; Jacq. Duval, Gen. Col. d’Europe, i. p. 181, 
t. 75. £. 874, 
Hab. Nortu America, Texas.—Mexico, Minas Viejas (Dr. Palmer).—Evrops, &c. 
An introduced species. 
DIAPERIS. 
Diaperis, Geoffroy, Ins. d’environs de Paris, i. p. 337 (1762); Laporte & Brullé, Ann. des Sciences 
Naturelles, xxiii. p. 833; Mulsant, Col. de France, Latigénes, p. 205; Lacordaire, Gen. Col. 
v. p. 801, Horn, Rev. Ten. of America north of Mexico, p. 879. 
Representatives of this well-known genus are found in Europe, Algeria, Japan, Ceylon, 
the United States, and the northern part of Central America. 
The different species are found in boleti, and also under bark, often in the oréatest 
profusion. 
1. Diaperis maculata. 
Diaperis maculata, Oliv. Ency. Méthod. vi. p. 273°; Ent. i. 55, p. 5, t. 1. fige. 2a, 6. 
Diaperis hydni, Fabr. Syst. Eleuth. iu. p. 585°; Lap. & Brullé, Ann. Sciences Nat. xxiii. p. 335‘; 
Horn, Rev. Ten. of Am. north of Mexico, p. 379°. 
Diaperis hydactina, Fabr. Ent. Syst. Suppl. p. 178°. 
Diaperis suturalis, Chevr. Petites Nouv. Ent. il. p. 170%. 
Hab. Norra America 12346, United States °.—Mexico? (coll. F. ates), Orizaba 
(Sallé); Guatemaua, San Joaquin (Champion). 
Central-American specimens agree perfectly with those from the United States. 
This is one of the numerous species described by Chevrolat, without the slightest 
reference to previous writers; it is abundant, according to Dr. Horn, in the middle and 
Eastern States. 
An allied species, D. rufipes, Horn, is found under cotton-wood bark in Arizona, not 
far from our northern boundary. 
