296 HETEROMERA. 
44, Mordella rutilicollis. (Tab. XIII. fig. 5, 2 .) 
Q. Elongate, cuneiform, moderately broad, black, the labrum and mouth-parts (the tips of the mandibles 
excepted) testaceous ; the head cinereo-pubescent, the pubescence sometimes golden-brown in colour on 
either side of the middle; the prothorax rufous, with the lateral margins and base, narrowly or somewhat 
broadly, infuscate or black, the sides, base, and apex bordered with cinereous pubescence, the rest of the 
surface much more sparsely clothed with darker pubescence; the scutellum cinereo-pubescent; the 
elytra each with an elongate-subtriangular mark on the disc some distance before the middle, con- 
nected anteriorly at its outer extremity with a short stripe which extends along the base to the suture 
(nearly enclosing a large oblique black spot), an oblique stripe some distance below the shoulders, a 
narrow transverse fascia beyond the middle (not reaching the suture or lateral margin), and the suture 
very narrowly from the base nearly to the apex cinereo-pubescent, the rest of the pubescence entirely 
black ; the pygidium, except at the tip, rufous, cinereo-pubescent. Head obsoletely canaliculate behind ; 
the palpi testaceous, the last joint of the maxillary pair infuscate, the latter stout, subtriangular ; antenne 
black with the three or four basal joints testaceous, long, rather slender, joint 3 narrow, 4-11 wider, 
much longer than broad, 4—7 subtriangular, 8-11 more parallel and slightly narrower ; elytra moderately 
long; beneath black, the last two ventral segments, and sometimes the third in the middle, rufous, the 
pubescence in great part cinereous; pygidium moderately long, blunt at the tip, about twice the length 
of the hypopygium ; legs black, the anterior femora and the base of the anterior tibie sometimes fusco- 
testaceous, the tibial spurs testaceous. 
Length to end of the elytra 4-64, to tip of the pygidium 5-83, millim.; breadth 13—2% millim. 
Hab. Guatemata, Capetillo (Champion). 
Four examples, apparently all females. Closely allied to MW. diformis, but differing 
from the female of that species by having the suture of the elytra narrowly cinereous, 
the long comma-like mark beyond the middle replaced by a transverse fascia, the two 
parallel stripes near the suture before the middle replaced by an elongate-triangular 
spot, and the pygidium shorter and more obtuse at the tip. None of the examples of 
either sex of I. biformis show the slightest trace of a cinereous line along the suture 
nor of the comma-like mark being replaced by a transverse fascia. It is not improbable 
that the male of MV. rutilicollis has the thorax and the terminal segments of the body 
black. The markings of the elytra approach those of MW. insulata, Lec. (figured by 
J. B. Smith, Trans. Am. Ent. Soc. x. t. 2. fig. 5). 
45. Mordella erythrocephala. (Tab. XIII. fig. 6.) 
Elongate, rather narrow; the head entirely rufous, the prothorax black, with the base and sides rather broadly 
flavo-testaceous, the scutellum black, the elytra black, each with a flavo-testaceous discoidal stripe exten- 
ding from the base nearly to the apex (wide at the base and narrow beyond), the pygidium reddish-testa- 
ceous ; the pubescence in great part partaking of the ground-colour. Head regularly convex; palpi 
obscure testaceous, the last joint of the maxillary pair piceous, the latter subtriangular, its inner and 
outer sides about equal in length, each very much longer than the apical side; antenne long and rather 
stout, black, the three basal joints a little paler, joints 4-11 moderately widened, longer than broad, 4 
much longer and wider than 3 but narrower than 5, 7-10 decreasing in width, 11 as long as but much 
narrower than 10; elytra convex, nearly four times as long as the prothorax; beneath broadly black at 
the sides, for the rest flavo-testaceous, cinereo-pubescent ; pygidium very slender and compressed, long, 
and acuminate, more than twice the length of the hypopygium ; legs rather slender, the anterior and 
intermediate femora entirely, the basal two-thirds of the hind femora, the anterior and intermediate tibise 
in their basal half, the base of the hind tibizw and their spurs, and the hind tarsi in great part testa- 
ceous, for the rest piceous, the penultimate joint of the four anterior tarsi somewhat broadly dilated, 
the inner spur of the hind tibise exceedingly elongate. 
Length to end of the elytra 33, to tip of the pygidium 44, millim.; breadth 14 millim. 
