308 RHYNCHOPHORA. 
a” space along the sides (the latter sometimes enclosing a small spot), and those on the 
elytra into two oblique or transverse fascie on the outer part of the disc and various 
asymmetrically distributed small scattered spots. The eight examples from Salina 
Cruz (fig. 15), all of comparatively small size, are in beautifully fresh condition and 
have the whitish markings very sharply defined. In two specimens (one from Tocoy 
and one from San Andres Tuxtla) the cinereous vestiture predominates, and in one of 
those from Juquila it is reduced, on the contrary, to a few small spots. An example 
from Tehuantepec (nab, in U.S. Nat. Mus.) with the scales greenish-cinereous may 
belong here. In many of them, including those from Salina Cruz, the posterior margin 
of the buccal cavity is produced into a tooth-like projection at the middle in front, 
just behind the mentum. The males have the prothorax more rounded at the sides 
than the females. 
5. Coleocerus marmoratus. (Tab. XIV. fig. 16.) 
Coleocerus marmvuraius, Horn, Proc. Am. Phil. Soc. xv. p. 109°; Pierce, Proc. U.S. Nat. Mus. 
XXXvil. p. 3647, : 
Hab. Norta America, Texas 1 ?.—MEeExico, Monterey in Nuevo Leon, Victoria in 
Tamaulipas (Schwarz, in U.S. Nat. Mus.). 
I have seen six specimens of this species from within our limits agreeing with others 
before me from San Diego and Brownsville, Texas. The markings are variable, the 
cinereous scales sometimes predominating, but the blackish scales are never condensed 
into two uninterrupted broad vitte on the disc of the prothorax as is often the case in 
C. variegatus, the latter also having the prothorax less distinctly narrowed at the base 
than in C. marmoratus, at least in the female. 
6. Coleocerus crassipes, sp. n. 
Subovate, convex, black; variegated with a dense clothing of rather large, imbricate, pale brown, fuscous, 
and whitish scales, the last-named condensed on the prothorax into a faint median line and a curved 
submarginal stripe, and those on the elytra into two transverse patches or fascie on the outer part of 
the disc and various irregular partly confluent smaller spots; the surface also set with minute, scattered, 
curled, decumbent sete. Rostrum broad, depressed down the middle, and with a small bare fovea 
behind the nasal plate. Prothorax transverse, much broader at the base than at the apex, the 
hind angles subrectangular as seen from above and immarginate externally, the base bisinuate, the 
surface densely punctate. Scutellum small, transverse. Elytra oblong, not or very little wider 
than the prothorax; punctate-striate, the interstices feebly convex. Mesosternal protuberance small, 
conical. Legs stout. 
Length 3,%,-5, breadth 2-21 millim. 
Hab. Mexico, Acapulco (Hége ; Knab, in U.S. Nat. Mus.). 
Six specimens. Extremely like C. rotundicollis, and only differing from it in the 
much less rounded sides of the prothorax and the more oblong elytra. It is possible 
they are the sexual complements of the same species, but this is not likely to be the 
case. ‘The less excavate, non-sulcate rostrum and the feebly protuberant mesosternum 
separate C. crassipes from all the varieties of C. variegatus and C. setosus. 
