GERZAUS. 279 
prothorax conical, the scutellum minute, the prosternal prominence of the male small 
and almost hidden by the vestiture. One of the smallest of the Central-American 
Centrinids. 
37. Gerzeus lentiginosus. (Tab. XV. figg. 12, 124, ¢.) 
Centrinus lentiginosus, Boh. in Schénh. Gen. Cure. viii. 1, p. 2217. 
Elliptic, nigro-piceous or black, the antenna, legs, and apical half of the rostrum more or less ferruginous ; 
thickly clothed with narrow ochreous or cinereous scales, which are arranged in two or three close rows 
down each elytral interstice, the elytra usually with a common light or dark brown spot on the suture 
beyond the middle and a faint brownish spot on the disc in a line with it; the vestiture of the under 
surface closer, coarser, and whiter. Head closely punctate; rostrum strongly arcuate, nearly half the 
length of the body, moderately stout, squamose, thickly punctate, and subcarinate in its basal half and 
sparsely punctured thence to the tip, the apical half much smoother in the 9, the antennee inserted at 
about the middle, the antennal club ovate and rather small. Prothorax transverse, arcuately narrowing 
from the base, feebly constricted in front; densely, finely punctate. Scutellum squamose. Elytra finely 
striate, the interstices densely rugulose. Prosternum squamose, more or less suleate in the ¢ , usually 
armed in the ¢ with two short, downwardly-directed, conical tubercles, which in fully-developed examples 
are produced into moderately long, curved, slender spines. Anterior tibix in the ¢ strongly, in the 9 
feebly unguiculate, hollowed within in the ¢. 
Length 23-3, breadth 14-14 millim. (¢ 9.) 
Hab. Mexico (Mus. Brit.), Orizaba (coll. Chevrolut', H. H. Smith), Toxpam (Sailé), 
Atoyac (H. H. Smith), Cordova, Jalapa (Hoge), Cuernavaca (U.S. Nat. Mus.), Teapa 
(Hoge, H. H. Smith); Guatemata, Cerro Zunil, Zapote, Capetillo, Guatemala City, 
San Gerdnimo, Sabo (Champion), Trece Aguas (U.S. Nat. Mus.); Costa Rica (coll. 
Solari), San José, Caché (Liolley), San Carlos, Zent (U.S. Nat. Mus.). 
This is one of three species standing under the name Centrinus lentiginosus in the 
Sallé collection, and the one that agrees best with Boheman’s description, which must 
have been taken from an immaculate example, most of our specimens having a brown 
spot on the suture beyond the middle. ‘The prosternal spines, which are sometimes 
obsolete, are rather long and curved in several of the Costa Rican examples, and short 
and tuberculiform in most of those from Mexico, the median sulcus varying in depth 
according to the development of the spines. 
38. Gerzeus simulator, sp. n. 
Elliptic, rather narrow, nigro-piceous or piceous, the antennz and legs usually more or less rufescent ; some- 
what sparsely clothed with narrow ochreous or cinereous scales, the elytra with intermixed fuscous scales, 
which are often condensed into a common transverse patch at the middle of the suture, a small spot on 
each side of it, and another on the disc near the apex, the elytral vestiture usually arranged in double or 
treble lines down the interstices 2, 4, and 6, and in a single line on the others ; the under surface uniformly 
clothed with ochraceous or whitish scales. Rostrum a little longer than the head and prothorax, strongly 
arcuate, stout, closely punctate and subcarinate, scarcely smoother in the 9. Prothorax transverse, 
narrowing from the base, densely punctate. Elytra narrowly punctate-striate, the interstices rugulosely 
punctate. Prosternum deeply sulcate in the ¢, almost unimpressed behind the transverse subapical 
groove in the 9, armed in the ¢ with two spines or conical tubercles, the spines in well-developed 
examples stout and curved. Anterior tibiz sharply unguiculate in both sexes. 
Length 2-21, breadth 1-1; millim. (¢d 2.) 
