534 CUCUJID. 
4, Rhinophleus nasutus, sp.n. (Tab. XVII. fig. 5.) 
Piceus, anterius dilutior, elytris flavo-bimaculatis ; antennis pedibusque sordide testaceis, illis basi late testacea ; 
capite longius rostrato, ante antennas fere longiore quam lato. 
Long. 2 millim. 
Hab. Mexico, Teapa (Sallé); Guatemata, Zapote, Pantaleon (Champion). 
Although extremely similar to R. salpingoides, this species is readily distinguished 
by the much produced head and the more slender basal joint of the antenne. Of the 
three examples from Guatemala one is a male, and has the antenne a little longer, but 
there is no difference in the form of the head. There is very little punctuation or 
striation visible in this species: the intra-humeral stria on the elytra can be easily seen, 
and the sutural stria is distinct at the tip, but there are only the faintest traces of any 
other strie. The only example from Mexico was labelled in the Sallé collection 
“D. salpingoides,” and also “type,” but I doubt whether Mr. Grouvelle ever saw this 
specimen ; at any rate it was not labelled by him. 
RHINOMALUS. 
Homalirhinus, Chevrolat, Ann. Soc. Ent. Fr. ii. p. 60 (1833) (nec Ménétries, 1832). 
Rhinomalus, Gemminger & Harold, Col. Hefte, vi. p. 124 (1870) ; Cat. Col. vii. p. 2062. 
Xenorhinus, Leconte & Horn, Class. Col. N. Am. ed. 2, p. 184 (1883). 
This genus is remarkable because of the elongate head, having the form of a flat 
beak. On this account Chevrolat placed the genus in Curculionidae. The name 
Homalirhinus being preoccupied, Gemminger and Harold changed it to Rhinomalus, 
but referred the genus to the Heteromerous series near Rhinosimus. Leconte and Horn, 
not being aware of these facts, proposed Xenorhinus as a new genus of Cucujide. 
I place at present in this genus species having the front coxal cavities closed and 
others having them open. This I am compelled to do, as I cannot say to which 
category the type-species of the genus belongs, never having seen a specimen of 
R. rujirostris, Chevrolat. I anticipate, however, that it will prove to have the coxal 
cavities closed, like R. signatus; in that case the name Rhinomalus will be applicable 
to the forms with anterior acetabula closed, and the name Xenorhinus can be used for 
R. anthracinus and R. chiriquensis, in both of which, as I have ascertained, the cavities 
are open. 
§1. Anterior coxal cavities closed ; antenne with joints 6-11 similar in thickness. 
(RHINOMALUS. ) 
1. Rhinomalus vicinus. 
Rhinomalus vicinus, Grouv. Ann. Soc, Ent. Fr. 1896, p. 197°. 
Hab. Mexico 1, Cordova (Saldé). 
We have received only one example. It is a small, pale Rhinomalus, with unusually 
short, pale antenne. 
