292 | HETEROMERA. 
distinguish the species from WZ. signata. The antenne have their joints 4-10 serrate, 
5-7 more strongly so; the penultimate joints are in both sexes about twice as long as 
broad. In UM. signata the fourth antennal joint is very little wider than the third. 
The tibial spurs are testaceous. The light pubescence varies in colour from ashy- 
white to golden. 
38. Mordella septemnotata. (Tab. XII. fig. 26.) 
Elongate, moderately broad, black ; the head with a very narrow line of cinereous pubescence along the base 
and also with some cinereous pubescence i in front, the rest of the pubescence black ; the prothorax some- 
what broadly margined on all sides with cinereous pubescence, the rest of the pubescence black ; the 
scutellum cinereo-pubescent ; the elytra densely clothed with whitish-cinereous pubescence, a large rounded 
transverse spot on either side of the suture close to the base, a short elongate stripe external to it reaching 
the base, a broad median fascia, narrowing inwardly and not quite reaching the suture, and the apical 
third black ; the pygidium cinereo-pubescent at the extreme base, for the rest black. Palpi black, the last 
joint of the maxillary pair stout, subtriangular (2); antenne black, moderately stout, joints 4-11 
widened, 4 very much longer and wider than 3 but narrower than 5, 5-9 rather longer than broad, 10 
about as broad as long; elytra moderately long, gradually narrowing from the base, flattened on the 
disc, with rather prominent humeral callus; the underside in great part black, the ventral segments 
at the base and the side-pieces of the metasternum with a little cinereous pubescence; pygidium ( 9 ) 
short, rather obtuse at the tip, about twice the length of the hypopygium; legs black, the tibial 
spurs lighter. 
Length to end of the elytra 64, to tip of the pygidium 74, millim.; breadth 23 millim. ( 9.) 
Hab. Mexico, Acaguizotla in Guerrero (H. H. Smith). 
One female example. Allied to MW. mexicana; the black pubescence much more 
extended, occupying by far the greater portion of the head and thorax (the sides only 
of the latter being cinereous), the elytra with an elongate additional mark at the 
shoulders, a much broader apical patch (which is not narrowed towards the suture in 
front), the median fascia more widened outwardly, and the basal spot much larger and 
placed more in front; the legs and antenne are stouter, entirely black, the antenne 
considerably shorter. 
39. Mordella mexicana. (Tab. XII. fig. 27.) 
Elongate, moderately broad, black, cinereo-pubescent ; the prothorax with a small rounded, oblique black spot 
on either side of the middle of the disc; the elytra with a small rounded spot on either side of the suture 
near the base, a rather broad median fascia, not extending to the suture and widening a little externally, 
and the apex broadly (but more narrowly so towards the suture in front) black ; the pygidium and entire 
under surface cinereo-pubescent. Head obsoletely canaliculate behind.’ Palpi testaceous, the last joint 
of. the maxillary pair darker, the latter stout, subtriangular; antenne pitchy-brown with the basal four 
joints testaceous, rather slender, joint 3 narrow, 4-11 wider, much longer than broad, 4—10 serrate, 5-7 
more strongly so; elytra moderately long, gradually narrowing from the base, flattened on the disc, with 
rather prominent. humeral callus; pygidium moderately long, obtuse at the tip, nearly twice the length of 
the hypopygium ; legs black, the anterior femora flavo-testaceous, the tibial spurs testaceous; the anterior 
tibiz a little curved, and the anterior femora fringed with long hairs within, in the male. 
Length to end of the elytra 5, to tip of the pygidium 6, millim.; breadth 24 millim. (¢.) 
Hab. Mexico, San Andres Tuxtla (Sallé). 
One male example. In the form of the antenne and. pygidium this insect resembles 
