24 LONGICORNIA. 
1. Romaleum atomarium. 
Cerambyx atomarius, Drury, Il. i. p. 93, pl. 41. f. 6, et ii. index. 
Cerambyx pulverulentus, De Geer, Ins. v. p. 118, pl. 14, f. 12. _ 
Stenocorus marylandicus, Fabr. Syst. Ent. p. 179. 
Callidium marylandicum, Oliv. Ent. iv. no. 70, p. 6, pl. 1. £. 5. 
Enaphalodes simplicicollis, Haldem. Proc. Ac, Phil. iii. p. 151 (var.). 
Hab. Norra America, Southern United States—Mexico, Paso del Macho (Hége). 
One specimen only has been sent home by Hége. It presents all the characters of 
Texan examples, except being much more slender and showing a feebler development 
of the antenniferous tubercles (the angles of which are not pointed) and of the antennal 
spines. It is impossible from a single example to decide whether these are only indi- 
vidual peculiarities or characters of a distinct local form or species. | 
ELAPHIDION. 
Elaphidion, Serv. Ann. Soc. Ent. Fr. 1834, p. 66; Lacord. Gen. Col. viii. p. 300. 
Lacordaire restricted the old genus Elaphidion to the limited number of species in 
which the pro- and mesosterna have their opposing faces vertical or nearly so, and the 
posterior femora spined, instituting a genus Hypermalius for the remainder. The 
separation has not proved satisfactory; and Dr. Leconte, in his important work on the 
North-American Longicornia (Smithson. Miscell. Coll. part ii. 1873), has recombined 
Hypermallus with the more typical forms. We here retain the genera as characterized 
by the author of the ‘Genera.’ laphidion in its restricted sense contains four or five 
species, peculiar to the West Indies and North and Central America. 
1, Elaphidion bidens.’ 
Stenocorus bidens, Fab. Mant. Ins. i. p. 1438. 
Elaphidion bidens, White, Cat. Col. Long. B. M. i. p. 1007. 
Hab. West Inpirs.—Honpuvuras!. 
2. Elaphidion irroratum. 
Cerambyz irroratus, Linn. Syst. Nat. ed. 12, i. 2, p. 633; Oliv. Entom. iv. no. 67, p. 45, t. 12. f. 163. 
Hab. Norta America.— Mexico ; Nicaragua, Chontales (Belt, Janson).—West Inp1zs. 
8. Elaphidion coronatum. (Tab. III. fig. 12.) 
Elaphidion coronatum, White, Cat. Col. Long. B. M. i. p. 1001. 
Hab. GuateMata, Honpuras!; Nicaragua, Chontales (Belt, Janson). 
Differs from the typical species in wanting the long apical spine to the four posterior 
femora. The femora also are more clavate. 
