274 HETEROMERA. 
the length of the inner side; antenna black, the basal four joints testaceous or fusco-testaceous, joints 
3 and 4 slender, 5-11 very broadly flattened, 5-10 strongly serrate, 5 more than twice the width of 4 and 
longer than 6, the penultimate joints strongly transverse; elytra moderately long; beneath and the legs 
eeruginous-pubescent; pygidium rather stout, moderately long, blunt at the tip, about twice the length 
of the hypopygium ; legs, including the tibial spurs, black. 
Length to end of the elytra 54-6, to tip of the pygidium 64-7, millim. ; breadth 23-23 millim. 
Hab. Mrxtico, Cordova (Sal/é). 
Two examples only of this remarkable species have been received; these agree 
precisely with each other in their external characters, though they are apparently male 
and female. The pubescence is dense, coarse, and scaly, and of a pale bluish- 
verdigris colour, but in certain lights it appears to be cinereous. No species of 
Mordella with similarly coloured pubescence is known to me. The antenne are 
broadly flattened and serrate from the fifth joint. 
7. Mordella dilaticornis. (Tab. XI. figg. 24; 24a, antenna.) 
Elongate, cuneiform, black; densely cinereo-pubescent, the pubescence on the prothorax yellowish in tint ; 
the prothorax with four small black spots placed transversely (two close together on the middle of the 
disc behind and two external to these a little more forward), the elytra with a small spot on either side 
of the suture near the base, a transverse fascia just beyond the middle, not reaching the suture and 
widening outwardly, and the apex, black; the pygidium cinereo-pubescent at the sides, black along the 
middle. Head grooved in the middle behind; antenne black with the basal four joints reddish, short 
and clavate, joint 5 triangular, very much wider than 4, 6-10 short, widened, broadly serrate, 7--10 about 
twice as broad as long; elytra moderately long, rapidly narrowing from the base, flattened on the disc, 
declivous laterally, the shoulders prominent, the sides straight; beneath cinereo-pubescent ; pygidium 
rather short, twice the length of the hypopygium, obtuse at the tip; legs black, the tibial spurs 
pitchy-red. 
Length to end of the elytra 6, to tip of the pygidium 7, millim.; breadth 23 millim. 
Hab. Panama, Volcan de Chiriqui (Champion). 
One example only of this very distinct species was obtained. In the short clavate 
antenne it approaches JZ. clavicornis and M. quadrisiqnata, this character separating 
it from all the other somewhat similarly marked Central-American species. The spots 
or markings of the thorax and elytra are comparatively small, so that by far the 
greater portion of the surface is covered by cinereous pubescence. The six outer 
joints of the antenne form a compact club. 
8. Mordella triangulifer. (Tab. XI. fig. 25.) 
Moderately elongate, rather broad, black ; the head, prothorax, and scutellum densely clothed with yellowish-. 
cinereous pubescence, the prothorax with a narrow blackish-pubescent stripe on either side of the middle 
of the disc (extending almost from the base to a little beyond the middle and widening anteriorly) and a 
similarly coloured spot on either side of these externally ; the elytra brownish-yellow or fulvous, with a 
very large, broad, triangular common basal patch and the suture narrowly from this to the apex black, in 
one example with a broad interrupted postmedian fascia and the apex pitchy-brown, the pubescence in 
great part yellowish-cinereous, the triangular basal patch (except along the base and suture) blackish- 
pubescent, the apex and the postmedian fascia brown-pubescent; the pygidium yellowish-cinereous- 
pubescent, the apical half blackish-brown. Palpi obscure testaceous, the apical joint of the maxillary 
