314 ; HETEROMERA. 
Hab. Guatemata, Teleman (Champion). 
One female example from the Polochic valley. Exceedingly like the same sex of 
M. castaneicolor, and only separable therefrom by the very different form of the palpi 
and antenne. In the shape of the antenne the present insect approaches JM. wqui- 
noctialis (2 ), from which it may be at once distinguished by the much shorter and 
broadly triangular shape of the apical joint of the maxillary palpi. The fifth antennal 
joint, as in I. wquinoctialis, &c., is distinctly stouter than the sixth ; in M. verwpacis 
joints 5-10 are much shorter and stouter than they are in MV. castanetcolor(2). A 
single specimen from San Juan, Vera Paz, is perhaps a small male of the same species ; 
it has the pygidium much longer, and each elytron marked with an arcuate indistinct 
dark brown fascia about the middle; the antenne are unfortunately broken off. 
7. Mordellistena vafer. 
Elongate, robust, cuneiform ; the head piceous in front, obscure castaneous behind, the labrum testaceous, the 
prothorax castaneous, with the disc largely suffused with piceous, the elytra blackish-brown, with the 
shoulders indeterminately castaneous, the pygidium piceous, reddish at the base and tip ; the sides of the 
prothorax and of the elytra and the suture with a little golden-brown pubescence, the pubescence on the 
rest of the surface partaking of the ground-colour. Head regularly convex; palpi ( 2 ) testaceous, the 
last joint of the maxillary pair infuscate, the latter rather stout, elongate-triangular, with the angles 
rounded ; antenne (@ ) pitchy-brown with the two basal joints testaceous, moderately stout, subfiliform, 
joints 3 and 4 small, equal in length, longer than broad, 4 wider than 3, 5 nearly twice as long as and much 
broader than 4, 5-10 subequal, longer than broad, 6 not quite so stout as 5, 11 a little longer than 10; 
prothorax transverse ; elytra elongate, gradually narrowing from the base ; beneath castaneous, the breast 
piceous ; pygidium moderately long and comparatively stout, twice the length of the hypopygium, blunt 
at the tip; legs testaceous, the hind pair reddish with the dorsal edge black; the hind tibie with two 
long very oblique ridges and a shorter subapical one, and a faint subdorsal ridge towards the base; the 
first joint of the hind tarsi with three, the second and third joints each with two, long, oblique ridges. 
Length to end of the elytra 4, to tip of the pygidium 43, millim.; breadth 13 millim. ( 2.) 
Hab. Panama, Tolé (Champion). 
One female example. Very similar to IZ. equinoctialis (2); but with the last joint 
of the maxillary palpi stouter, the antenne more slender and subfiliform, the pygidium 
stouter and less pointed at the tip, and the suture narrowly golden-brown-pubescent. 
The last joint of the maxillary palpi is more ovate in shape than in the same sex of 
M. valens, M. castaneicolor, or M. verepacis; the antennz are almost as slender as in 
M. castaneicolor ( 2 ), but joints 5-11 are not so elongate. In the form of the antenne 
the insect is most closely allied to MW. valens. 
8. Mordellistena bicarinata. 
Moderately elongate, cuneiform, ferruginous or flavo-ferruginous, the elytra a little darker, the pubescence 
uniform and partaking of the ground-colour. Palpi testaceous or fusco-testaceous, the last joint of the 
maxillary pair elongate, scalene-triangular ; antenne testaceous, or fusco-testaceous with the basal four 
joints paler, filiform, slender, moderately long, joint 3 thin, 4 longer and stouter than 3, 5-10 elongate, 
about equal in length, 5 a little longer and stouter than 4; prothorax transverse; elytra gradually 
narrowing from the base; beneath coloured as above; pygidium very long and slender, two and a half 
