142 
Co’ssETv Davis. 
inelanized, distally cur\'cd inwards to a tapered obtuse beak. Ninth abdominal 
sternite tapered, distally smoothly truncate, margin minut(‘h' echinulate 
distally and on the right. Left cercus-basipodite obtuse, curved upwards 
and inwards and slightly sjiathulate. Terminalia otherwise as throughout 
the genus. 
? unknown. 
Locality : Miily Milly Station, Murchison Ki\'er, 2b v 22, coll. L. Glauert 
{holotype W.A. Museum ; paratype (J, ^Macleay ^luseum, Sydney Uni- 
versity). 
Oligotoma tillyardi Davis. 1936 (Plate 1., tigs. 8-10). 
Proc. Linn, Soc, A’. S'. IT., 61 , 5-6, p. 241, Figs. 5, 12, 19, 26, 33. 
Length 7. 4-9. 7 mm. ; head 1.3-1. 5 mm., x 1.0-1. 2 mm. ; forevving 
7. 5-8. 5 mm., x 1.9-2. 0 mm. ; hindwing 6. 1-7. 2 mm., x 1.9-2. 0 mm, Colour 
yellowish-brown, eyes and wings as in 0. glauerti. Head as in O. glauerti, 
antennae with up to 19 segments, maximum total length 4.6 mm. Dentition 
of mandibles (Plate I., tig. 10) resembling O. glauerti. Thorax including wings 
and legs normal for the genus. Terminalia (Plate I., fig. 8) with posterior 
process of right hemitergite as in O. glauerti ; process of left hemitergite 
(Plate I., fig. 9) forcipate, right-hand lobe heavily sclerotized, curved to the left 
and acute terminally, left-hand lobe more dorsal in position, flat, less heavily 
sclerotized, obtuse, curved downwards and to the right terminally and ex- 
cavate on the concave inner side. First segment of left cercus terminalh' 
incurved to form a spatludate process. Ninth abdominal sternite tapered, 
rather sharply truncate, emarginate latero-distally on the left, margin echinu- 
late distally aiul on right as in preceding species. Left cercus-basipodite 
slender, tapered, sub-obtuse distally, fixed to left-hand margin of ninth sternite 
by membrane. Terminalia otherwise as throughout genus. 
9 unknown. 
Localises: Morgan’s, near Mt. Margaret, x,33 (holotype Macleay 
Museum ; paratype W.A. Museum, etc.) ; Belele Station, Murchison 
(4 ; Annean Station, near Nannine, Murchison (1 ^J). (Last two, new 
records.) 
Oligotoma approximans Davis, 1938 (Plate I., figs. 1-2, 11-13). 
Proc. Linn. Soc. N.S.W., 63, 3-4, p. 252, Figs. 116-119. 
6.3-6.9 mm. ; head 1.0-1. 1 mm., x 0.9 mm. ; forewing 5.8-7. 2 
mm., X 1. 5-1. 7 mm. ; hindwing 4. 8-5. 9 mm., x 1.4-1. 7 mm. Colour dark 
brown, eyes and wings as in 0. glauerti. Head as in O. glauerti \ antennae 
with up to 18 segments, maximum total length 3.5 mm. ; mandibles (Plate 
I., fig. 13) of same general form as in preceding species, somewhat stouter. 
Thorax includmg wings (Plate I., fig. 1) and legs (Plate I., fig. 2, hind tarsus) 
normal for the genus. Terminalia (Plato I., fig. 11) with outer process of right 
hermitergite sleiider, tapered, obtuse, and slightly outcurved terminally ; 
process of left hermitergite (Plate I., fig. 12) basally sinuous, tlistally slenderly 
tapered, with a fiat subtriangular spine arising half-way along the left-hand 
margin and diretded to the left. First segment of left cercus with a small 
blunt inner lobe about one-third of length from extremity, inner margin basad 
to lobe concave. Ninth abdominal sternite tapered posteriorly, distally 
obliquely truncate and slightly emarginate, conca\dty filled by a projecting 
membrane. Left cercus-basipodite as in O. tillyardi, Terminalia otherwise 
as throughout the genus. 
9 luakiiown. 
