MORDELLISTEN A. 313 
for the rest reddish ; legs testaceous or reddish testaceous, the dorsal edge of the hind tibi and tarsi piceous ; 
hind tibize and tarsi with the ridges as in MV, equinoctialis ; the middle tibie with a single long fine spur. 
Length to end of the elytra 5, to tip of the pygidium 6, millim.; breadth 12 millim. (9.) 
Hab. Panama, Bugaba (Champion). 
‘Two female examples. Very close to M. wquinoctialis, from the corresponding sex 
of which it differs as follows :—The antenne are longer, more slender, and less tapering 
(resembling those of the male of that species), and have their joints 5-10 all consider- 
ably longer than broad ; the last joint of the maxillary palpi is wider and more angular ; 
the thorax is luteous ; the elytra have an interrupted antemedian fascia, as well as more 
than the apical third, golden-brown-pubescent ; the pygidium is longer (as long as in the 
male of MZ. equinoctialis); and the body is stouter, broader, and more cuneiform. 
5. Mordellistena castaneicolor. (‘lab. XIV. figg. 1, @; 1a, maxillary 
palpus. ) 
Elongate, robust, cuneiform, castaneous, clothed with golden-brown-pubescence, the eyes and the tips of the 
mandibles black. Head regularly convex, the eyes very large; maxillary palpi ( 2 ) testaceous, the apical 
joint castaneous, the latter elongate, rather stout, scalene-triangular ; antenne ( 2 ) testaceous, compara- 
tively slender, joints 3 and 4 narrow, longer than broad, subequal, 5-10 moderately widened, subserrate, 
about equal in length but slightly decreasing in width, all considerably longer than broad, 5 very much 
longer than 4, 5 and 6 almost equal, 11 longer than 10; prothorax transverse; elytra long and convex, 
gradually narrowing from the base; beneath castaneous, the breast slightly darker; pygidium conical, 
moderately long, twice the length of the hypopygium; legs testaceous, the dorsal edge of the hind pair 
piceous ; the hind tibie with two long oblique ridges and a shorter subapical one, anda long fine sub- 
dorsal ridge towards the base; the first joint of the hind tarsi with three, the second and third joints 
each with two, long oblique ridges ; the middle tibia with a single long fine spur. 
‘Length to end of the elytra 53, to tip of the pygidium 6, millim.; breadth 12 millim. ( 9.) 
Hab. Panama, David in Chiriqui (Champion). 
One female example. Allied to WM. equinoctialis and WM. valens, but with the 
antenne much more slender, and the apical joint of the maxillary palpi stouter than 
in the females of these species; the antennal joints 5-10 are subserrate, and the fifth 
and sixth are almost equal (the fifth scarcely stouter than the sixth); the pygidium is 
shorter than in the females of WM. valens. The apical joint of the maxillary palpi is 
almost as stout as in M/. lineatocollis ( ¢ ), but it is more elongate. The pubescence is 
uniformly golden-brown. ‘The eyes are very large. 
6. Mordellistena verzpacis. | 
Elongate, robust, cuneiform, castaneous, clothed with golden-brown-pubescence, the eyes and the tips of the 
mandibles black. Head regularly convex ; maxillary palpi ( Q ) obscure testaceous, the apical joint piceous, 
the latter short and stout, broadly triangular, its apical and inner sides about equal in length, both much 
shorter than the outer side; antenne (@) piceous with the two basal joints testaceous, moderately stout, 
short, joints 3 and 4 short, 3 narrow, 4 as broad as long, 5 very much wider than and nearly twice as long 
as 4, 5-10 slightly decreasing in width, all about as broad as long, 11 longer than 10; prothorax, elytra, 
pygidium, and legs as in M. castaneicolor ; beneath castaneous, the posterior coxee and metasternum piceous. 
Length to end of the elytra 4, to tip of the pygidium 5, millim.; breadth 13 millim. (@.) 
BIOL. CENTR.-AMER., Coleopt.. Vol. IV. Pt. 2, October 1891. 9SS 
