538 CUCUJID. 
9. Silvanophleus gundlachi. 
Lemophleus gundlachi, Grouv. Ann. Soc. Ent. Fr. 1876, p. 499, t. 9. fig. 19°. 
Hab. Mexico, Atoyac (H. H. Smith), Motzorongo (Flohr), Cordova, Campeche (Sallé), 
Teapa (Sallé, H. H. Smith); Britisn Honpuras, Belize (Blancaneaux) ; GUATEMALA, 
Zapote, San Juan, Balheu (Champion); Panama, Volcan de Chiriqui (Champion) ; 
CENTRAL AMERICA I. 
This species is a very puzzling one, owing to the peculiar sexual characters. In one 
sex the terminal segment of the abdomen is more or less prolonged: as these specimens 
are usually larger and possess longer antenne I conclude they are males. ‘This abdominal 
character is not, however, constant; not only are the females destitute of it, but also 
some other examples that, from their long antenne, I consider to be males. It appears 
to me, therefore, that this is a secondary male character, variable in the extent to which 
it may be developed. 
L. politus, Woll., from the Cape Verde Islands, appears to be closely allied to this 
species. (Cf. also my remarks, antea p. 531, on Lwmophleus pallentipennis.) 
3. Silvanophleus infimus, sp.n. (Tab. XVII. fig. 9.) 
Perdepreseus, sat angustus, politus, piceus; elytris stramineis, obsolete striatis ; capite prothoraceque parce 
punctatis. 
Long. 2 millim. 
Hab. GuatEMALa, Zapote (Champion). 
Although easily distinguished from S. gundlachi by the nearly black colour of 
the under surface, and of the head and thorax, I can find no other good distinctive 
characters. We have received only three specimens. ‘There are no intermediates 
amonest our rather large series of S. gundlachi. 
4, Silvanophleus atomarius, sp. n. 
Angustus, rufus, capite thoraceque supra nigricantibus, antennis extrorsum fuscis; politus, elytris stramineis, 
obsolete striatis. 
Long. 1-1} millim. 
Hab. Panama, Bugaba (Champion). 
This is the smallest Cucujid of our region. It bears a superficial resemblance to 
Lemophleus immersus and to S. infimus, but appears to be thoroughly distinct from 
either. The short head has no epistomal suture. The antenne are twice as long in 
the male as they are in the female; in this latter sex the terminal three joints form a 
distinct club; the second joint is thicker but not longer than the third. Thorax not 
transverse, a little sinuate and narrowed at the sides behind, polished and impunctate ; 
the fine intra-lateral carina quite distinct. Elytra narrow, not deplanate, very obsoletely 
striate, without intra-lateral carina. All the legs widely separated. ‘Ten specimens. 
The male is twice as large as the female. 
