300 HETEROMERA. 
51. Mordella sticticoptera. (Tab. XIII. figg. 12; 12a, antenna.) 
Moderately elongate, black or pitchy-brown; the head with a broad band of dark brown pubescence along the 
middle, the sides with yellowish-cinereous pubescence; the prothorax with small yellowish-cinereous- 
pubescent spots scattered nearly all over the surface, these spots becoming more numerous at the sides 
and in front and partly coalescing there, for the rest clothed with brownish-black pubescence, an ill- 
defined large oblong patch on the middle of the disc behind and a narrow one in front almost free from 
spots ; the elytra with the following yellowish-cinereous-pubescent markings—a small spot at the base 
close to the shoulders, a larger spot near the suture a little below the base, one opposite to it on the 
lateral margin, an angulated fascia (sometimes divided into two spots, and not reaching the suture) at 
about one-third from the apex, and numerous more or less serially-arranged small punctiform spots (a row 
on either side of the suture the most distinct) which extend from the base to the apex,—the extreme apex 
also more or less distinctly bordered with yellowish-cinereous pubescence, the rest of the pubescence 
blackish-brown ; the pygidium yellowish-cinereous-pubescent at the sides, blackish-brown along the 
middle. Head with traces of a faint median groove; palpi piceous, the last joint of the maxillary pair 
oblong ovate, obliquely truncate at the apex; antennz with joints 1-4 (and sometimes the base of the 
fifth) testaceous, obscure testaceous, or piceous, 5-7 yellow, 8-11 black, 3 and 4 elongate, very slender, 
subequal, 5-11 broadly widened, 5-10 strongly serrate and gradually increasing in width, 6-10 transverse 
(9 and 10 nearly twice as broad as long), 11 longer than 10, short ovate ; elytra moderately long ; beneath 
black, the ventral segments a little lighter and, except at the sides behind, densely yellowish-cinereous- 
pubescent ; pygidium very short and stout, blunt at the tip, not twice the length of the hypopygium ; 
legs slender (the hind pair excepted), black, the two anterior pairs a little lighter, the tibial spurs testa- 
ceous, the penultimate joint of the anterior and middle tarsi filiform, the intermediate tibie and tarsi 
equal in length. 
Length to end of the elytra 34-44, to tip of the pygidium 4-5, millim.; breadth 14-2 millim. 
Hab. Mexico, Juquila, Tehuantepec (Sal/é); Guatemaua, Chacoj (Champion) ; 
Panama, Volcan de Chiriqui (Champion). 
One example only from each locality ; these evidently include the two sexes, one of 
the specimens being much narrower than the others. The elytral markings vary 
slightly, the serially-arranged spots being larger and showing a tendency to coalesce in 
one example. In the peculiar coloration of the antennal joints this species somewhat 
resembles M. varicornis, the latter, however, has the apical joint yellow; the elytral 
markings are also somewhat similar, but in MW. sticticoptera the fasciee and larger spots 
are much reduced in size or partly obsolete. 
52. Mordella varicornis. (Tab. XIII. figg. 13; 13a, antenna.) 
Elongate, pitchy-black, the elytra (when denuded of pubescence) blackish-castaneous; the head with a very 
broad band of dark brown pubescence along the middle, the sides golden-pubescent ; the prothorax with 
small oblong or transverse partly confluent patches of golden pubescence scattered all over the surface, 
the rest of the pubescence brownish-black ; the elytra with the following golden-pubescent markings— 
a large irregular patch near the suture below the base, a smaller patch lower down nearer the lateral 
margin, an angulated fascia at about one-third from the apex and a curved fascia just before the apex 
(both extending completely across), and numerous small scattered punctiform spots,—the suture also 
golden-pubescent, the rest of the pubescence brownish-black ; the pygidium golden-pubescent, with a 
blackish line along the middle. Palpi piceous, the last joint of the maxillary pair ovate; antenne long, 
joints 1-7 testaceous, 8-10 black, 11 yellow, 3 and 4 elongate, very slender, subequal, 5-10 gradually 
widened, serrate, 5 longer and much wider than 4, 6 and 7 a little shorter and broader, subequal, longer 
than wide, 8-10 much broader than 7, about as broad as long, 10 a little narrower than 9, 11 oblong 
ovate, much longer than 10; elytra comparatively long; beneath black, the apices of the ventral segments 
