Kevistox op the K^ibiopteka of Westehk Australia 
145 
first segment of left cercus irregular and cchinulate ; second segment short, 
subconical, firmly fused to first segment. Ninth abdominal sternite with a 
slender hea^dly-sclerotized finger-like process dir(?cted upwards ; left ('.ercais- 
basipodite with a similar process directed back^^■ards and to the left. Ter- 
minalia otherwise as throughout the gemis. 
? See Davis, 1936, p. 246. 
Localities : Near Perth, coll. G. H. Hardy (Friederichs’ types, no longer 
extant) ; Caversham, near Perth, vi/15, coll. C. Kerruish W.A. Museum, 
Macleay Museum, etc. ; infra) ; Midland, near Perth, vi /36 and vii/38 (cJcJ) ; 
Cottesloe, 25/v/40 (4 ; new record). 
In addition to these localities in AVest(?rn Australia, the species is known 
from near Nyngan, N.S.W., and from near Townsville and Rockhampton, Q. 
(Davis, 1936, p. 246, and 1940a, p, 158). 
Note . — It is clear that Friederichs’ types have been lost. A male (slide 
mount ; Macleay Miiseum) has accordingly been designated neotype. The 
locality, Caversham, is as close to the original type locality as can be de- 
termined ; the specimen agrees with Friederichs’ description in all respects. 
KEY TO THE SPECIES OF WESTERN AUSTRALIAN EMBIOPTERA. 
(Characters arc for the adult male ; tlie tarsal features apply to both sexes and all 
stages.) 
1 . R.j +5 and M well-defined ; first segment of hind tarsus with a medial bladder on the 
plantar surface ; first segment of left cercus echinulate, second segment of length 
less than twice average breadth, not distinctly articulated with first Nofolkfotorm 
hardy i (Fried). 
R4+5 and M subobsolescent ; medial l)ladder of first segment of hind tarsus absent ; 
first segment of left cercus not echinulate ; second segment with length at least three 
times maximum breadth, and clearly and movably articulated with first segment 2 
2. Process of left hemitergite with a terminal hook ... ... ... ... ... 3 
Process of left hemitergite with a lateral process ... ... ... ... ... 5 
3. Terminal hook of process of left hemitergite projecting to both sides from point of 
attachment ; margin of ninth abdominal sternite minutely echinulate near right- 
hand distal angle Oligoioma glauerti Tillyard. 
Terminal hook of process of left hemitergite projecting only to the left from its point of 
attachment ; ninth abdominal sternite smooth ... ... ... ... ... 4 
4. First segment of left cercus clavate ; left cercus-basipodite spinescent Oligotoma 
gur7ieyi spinulosa Davis. 
First segment of left cercus subcylindrical ; left cercus-basipodite blunt Oligotoma 
gurneyi Frogg., subsp. ? 
5. Lateral lobe of process of left hemitergite blunt, spathulate ; outer process of right 
hemitergite terminally bidentate ; first segment of left cercus very markedly incurved 
terminally ... ... ... ••• Oligotoma tillyardi Davis. 
Lateral lobe of process of left hemitergite a sharp, fiat spine ; outer process of right 
hemitergite terminally tapered, obtuse ; first segment of left cercus only slightly 
incurved ... ... ... ... ... ... Oligotoma approximans Davis. 
jVoie. — The exotic species Oligotoma saandersii Westwood (native of the Indian Region) 
and O. humbertiana (Sauss.) Davis (native of Ceylon) may later be found to occur in North- 
West Australia. The terminalia of each (cf. e.g., Davis, 1939, Figs. 3, 5) are very distinc- 
tive ; the former has a curved spine arising subterminally from the left-hand margin of 
the ninth abdominal sternite, and curving under this and upwards on the right ; the latter 
has a prominent tooth on the outer margin of the outer process of the right hemitergite, 
this tooth being situated well forward of the termination of the main process. 
