MALLODONOPSIS.—APLAGIOGNATHUS. 7 
MALLODONOPSIS. 
Mallodonopsis, Thoms. Class. Long. p. 317. 
This small group is generically distinct from other described American forms, except 
Maltlodonoplus and Aplagiognathus, from which it is difficult to distinguish it by 
characters of more than specific value. It contains, like its allies, a limited number of 
species, confined to North and Central America and the northern parts of South 
America. Its affinities seem to be towards genera of the Old World, such as the 
Australian Eurynassa, rather than towards Mallodon, with the American species of 
which it is nevertheless liable to be confounded. The length and slenderness of the 
antennal scape which distinguish the type species (Jf. mewxicanus) are not retained in 
species closely allied to it. 
1. Mallodonopsis mexicanus. (Tab. I. fig. 1,¢; fig. 2, 2.) 
Mallodonopis mexicanus, Thoms. Class. Long. p. 317. 
Hab. Mexico (Boucard); Nicaraeua, Chontales (Belt). 
The figures are from Chontales specimens. 
2. Mallodonopsis corrosus. 
Elongatus, angustus, nigro-piceus; antennis (scapo excepto), palpis et tarsis rufo-piceis; capite, mandibulis 
thoracisque lateribus utroque sexu grosse et crebre scabrosis ; 3 scapo, femoribus tibiisque quatuor anticis 
etiam scabroso-punctatis, 2 fere levibus; thorace disco antice et postice subelevato fere levi, lateribus 
denticulis acutissimis 8-10; elytris parallelis, punctulatis, utrinque vage trisulcatis, apice suturali spinoso. 
Long. 1 poll. 2 lin. usque 1 poll. Glin. ¢ @. 
Hab. Guatemata (Salvin), Capetillo (Champion); British Honpuras, R. Sarstoon 
(Blancaneau). 
Distinguished by its narrow convex form, in which it resembles Aplagiognathus 
spinosus more than it does its congener UM. mexicanus. It forms, indeed, a connecting 
link between the two genera, the scape being much shorter than in DJallodonopsis, 
though retaining the same curved and compressed shape and thus differing from the 
short, thick, clavate form of the same joint in Aplagiognathus. 
APLAGIOGNATHUS. 
Aplagiognathus, Thoms. Class. Long. p. 320. 
Mallodon (partim), Lac. Gen. des Col. viii. p. 125. 
Cnemoplites (partim), Newman, Charlesw. Mag. Nat. Hist. iv. p. 194, 
A. spinosus (Newm.) is cited by M. Thomson as the type of his genus Aplagio- 
gnathus, which cannot be reunited to Mallodon, as Lacordaire attempted, without 
rendering the definition of the latter impracticable. In his later work, ‘ Physis’ 
(vol. i. p. 90), M. Thomson enumerates eight species (besides two doubtful) as belonging 
to his genus, all Central- and North-American. Newman referred the type species to 
the Australian genus Cnemoplites, with which it has only a distant connexion. 
