L. Harrison 
385 
Sub-order Amblycera. 
Family Menoponidae. 
Genus Eomenopon, nov. 
Neumann (1912, p. 353) has founded a sub-genus Menacanthus for 
the reception of certain forms, previously included in Menopon, which 
bear spinous processes ou the ventral surface of the head. He thinks 
(1912, p. 353) “qu’on accueillera avec satisfaction la subdivision que je 
propose dans le genre Menopon.’’'’ Possibly the satisfaction would 
have been greater had a less heterogeneous assemblage of forms been 
included in the sub-genus. 
The new genus which I propose also has spines upon the ventral 
surface of the head. But it need not, on that account, be confused with 
any of the various members of the sub-genus Menacanthus, for the 
spines are in a different position; nor does its separation depend upon 
the spines alone, for the frontal margin carries a deep lateral cleft, 
similar to that found in Heterodoxus, which is more pronounced in the 
young than in the adult. This apparently primitive character will be 
further discussed below. The genus, which would seem to be charac¬ 
teristic of Austrahan lorikeets (Loriidae), may be diagnosed as follows; 
Menoponidae with the chitinous framework for support of the 
mandibles continued forwards to the anterior margin of the head, 
thence curving downwards and backwards to form a pair of stout 
freely-projecting spinous processes, which reach to the anterior border 
of the mandibles; with a deep narrow cleft in the side of the forehead, 
extending to the inner border of the antennary fossa; with winged 
prothorax, short, but distinct, mesothorax, and metothorax differing 
from the abdominal segments; and with abdomen of nine distinct 
segments. 
Eomenopon denticulatus, n. sp. Figs. 5, 6, 16. 
Head. Parabolic in front, evenly rounded to the temporal angles, 
with a very slight emargination in front of the eye. Occiput shghtly 
concave. Chitinous supporting structures of unusual form, consisting 
of two broad straight bars giving articulation to the mouthparts, 
which run parallel from the anterior margin of the head to where they 
are met by the forward ventral continuation of the temporal border 
(the dotted hne in Text-fig. 1). At this point each bar divides into 
two; one branch following the inner margin of the antennary fossa, 
