GERAUS. 269 
15. Gerzus undatus, sp. n. 
Subrhomboidal, rather convex, nigro-piceous or piceous, the rostrum, antenne, prosternal spines, tibie, and 
tarsi ferruginous; somewhat thickly clothed with small, narrow, ochraceous or yellowish-white scales, 
those on the prothorax long, hair-like, and transversely arranged, and those on the elytra almost wholly 
condensed into a transverse sub-basal fascia (extending forward on to the scutellum), a common angu- 
lated fascia beyond the middle, and a subquadrate apical patch, the rest of the elytral surface with 
scattered, minute, fuscous scales ; the vestiture of the under surface close, yellowish-white. Head closely 
punctate, shallowly foveate between the eyes; rostrum strongly arcuate, considerably longer than the 
head and prothorax, rather slender, almost smooth, except at the sides towards the base, the antenne 
inserted at about the middle, the antennal club ovate. Prothorax short, rounded at the sides from near 
the base, constricted and narrow in front; densely, finely punctate. Elytra triangular, much wider than 
the prothorax ; narrowly punctate-striate, the interstices flat and roughly punctulate. Beneath densely 
punctate. Prosternum armed with two long or moderately long slender spines, and also very deeply 
excavate down the middle anteriorly. Anterior coxe separated by fully their own width. Legs rather 
long and slender. 
Length 23-24, breadth 14-13 millim. (<¢.) 
Hab, GuateMaLa, Senahu in Vera Paz, Cerro Zunil (Champion). 
Two males—one, in fresh condition, taken as the type, from Senahu, the other worn, 
with much longer prosternal spines, from Cerro Zunil. A small, short form near 
G. tenuispinis, with two transverse pallid fasciz on the elytra—one basal, the other 
angulate, beyond the middle. ‘The humeri are more prominent than in many of the 
allied species. 
16. Gereeus scabrosus, sp.n. (Tab. XIV. figg. 32, 32a, ¢.) 
Subrhomboidal, black, the tarsi and prosternal spines obscure ferruginous ; sparsely clothed with short, decum- 
bent, intermixed pallid and blackish, setiform scales ; the prothorax with a patch at each hind angle, the 
elytra with one or two spots at the base on each side of the scutellum, and the mesothoracic epimera 
densely clothed with narrow ochreous scales; the vestiture of the under surface and legs very sparse, fine, 
and whitish. Head closely punctate, transversely grooved between the eyes; rostrum (¢) strongly 
arcuate, long, much thickened towards the base, flattened at the tip, coarsely striate-punctate, ( 9 ) longer, 
slender, and almost smooth, sparsely punctured and thickened at the extreme base and flattened thence to 
the tip, the antenne inserted considerably behind the middle in the ¢ and at the basal third in the 9. 
Prothorax transverse, rounded at the sides anteriorly, constricted and much narrowed in front; densely, 
confluently punctate. Elytra subtriangular, narrowly punctate-striate, the interstices flat and rugosely 
punctate. Beneath closely, rather coarsely punctate. Prosternum with a transverse impression in front 
limited on each side by a short ridge. 
g. Prosternum armed with two very long, porrect spines, which are curved downward towards the tip, and 
with a deep circular excavation behind the transverse impression. First ventral segment broadly 
depressed and sparsely punctate in the middle. 
Length 51-51, breadth 24-24 millim. (¢ 2.) 
Hab. Panama, Bugaba (Champion). 
One pair. A roughly-sculptured form, with short, scattered, somewhat bristly 
vestiture, and dense patches of ochreous scales at the hind angles of the prothorax, at 
the base of the elytra, and on the side-pieces of the mesosternum; the rostrum very 
differently shaped in the two sexes; the prosternum armed with long, downwardly- 
curved spines in the male. ‘The following is the Guatemalan representative of the 
same species *. 
* I have seen a somewhat similar undescribed Mexican form belonging to the U.S. Nat. Mus., but it has a 
short stout rostrum. 
