226 ; RHYNCHOPHORA. 
have reached us from Central America; but the following species is almost certainly 
a native of that region. 
1. Cryphalus jalape. 
Bostrichus jalappe, Letzn. Abh. schles. Jahrb, 18447*; Arb. schles. Ges. 1848, p. 99°. 
Cryphalus (Ernoporus) jalape, Ferr. Borkenk. pp. 12,14, 16 (nota) ’. 
Cryphalus jalappe, Hichhoff, Rat. Tom. p. 134%. 
Hab. % Mexico 1 234, 
This insect was originally found in Europe, boring into roots of Jalap (Jpomma 
jalapa and J. purga) exported from Mexico. I am, however, not aware that it has 
ever been actually taken in that country. There is no sufficient reason for regarding 
Ernoporus, Thoms., as a genus distinct from Cryphalus; the distinctions between them 
tend to break down with the study of exotic forms. 
HYPOTHENEMUS. 
Hypothenemus, Westwood, Trans. Ent. Soc. Lond. i. p. 84 (1836); Leconte, Rhynch. N. Am. 
p. 355. 
Stephanoderes, Eichhoff, Berl. ent. Zeitschr. 1871, p. 182; Rat. Tom. p. 142. 
Homeocryphalus, Lindemann, Bull. Mosc. 1876, 2, p. 168 (pro parte). 
Hypothenemus is closely allied to Cryphalus, of which it is regarded by certain 
writers as merely a subgenus. Beyond general appearance, I know of no constant 
character to distinguish them. Normally, the funiculus is 5-jointed in Hypothenemus, 
4-jointed in Cryphalus. But the joints are four in number in the species on which 
Lindemann founded his genus Homeocryphalus, and according to Leconte they vary 
from three to five in the American species. Westwood gives three as the number in 
H. eruditus, and I cannot make out more in one of his typical examples examined 
without special preparation. Ina specimen from Nevis I have found four, but to 
resolve them required the mounting of the antenna in balsam, and an amplification far 
beyond any that is usually employed by micro-coleopterists. Clearly the number of 
joints is not in this case a good generic character. As referred to in the introduction 
(antea, p. 81), Lovendal has shown that in Dryocetes (Lymantor) coryli the fifth joint 
of the funiculus is more or less fused with the club, and he has informed me that there 
may be more or less coalescence of the two funicular joints in Crypturgus. Something 
of the same sort is to be found in various Corthyli; and the phenomenon is therefore 
not unprecedented. 
Kichhoff (Proc. U. 8. Nat. Mus. xviii. p. 608) insists that Westwood’s name is 
untenable because the genus is founded on one non-existent character, and that 
Stephanoderes must take its place. There is no reason whatever for disbelieving 
Westwood’s statement that the funiculus is three-jointed—as far as the example he 
