Vol. LVI, No. 5. 
37 
^ TRIASSIC INSECTS OF QUEENSLAND. 
1 1 . Eoses, a Probable Lepidopterous Insect from the Triassic 
Beds of Mt. Crosby, Queensland, v 
By Norman B. T indale, B.Sc., South Australian Museum. 
(With Three Text-figures and One Plate.) 
( Communicated by T. D. Dimmick.) 
(. Received 24 th April , 1944; read before the Royal Society of Queensland , 
July, 1944; issued separately 21th April, 1945.) 
Rich fossil insect material has been discovered in a horizon in the 
Triassic beds of Mt. Crosby, Queensland. In the course of a preliminary 
study of some of the orders of insects represented, a privilege made 
possible through the courtesy of the University of Queensland and the 
kindness of Professor H. C. Richards of the Department of Geology, 
Mr. F. A. Perkins, Lecturer in Entomology, and Messrs. W. R. Home 
and I. F. B. Common, much of special interest has been observed among 
fossil insects related to the Mecopteroid or Panorpoid stem. The fol- 
lowing description is a first contribution to the study of the Mecopteroid 
insects of these beds. It may prove to be of special interest to those 
studying the origin of the Order Lepidoptera. 
The Mt. Crosby fossil insect horizon is situated near the Brisbane 
River, five miles to the north of Ipswich. The horizon was first 
discovered by Jones and Denmead in 1925 on Portion 172, Parish of 
Chuwar. From this outcrop (Locality A) insect wings were collected 
and exhibited before the Royal Society of Queensland (Jones, 1926). 
The stratigraphical horizon of these was indicated by Jones (1927) in 
an appendix to a paper on the Tertiary Deposits of the Moreton District. 
The insects were later described by Tillyard (1937) as two new species of 
the genus Triassoblatta. 
At a later date further localities in the same area and on the same 
horizon were found by Mr. H. Cribb*, one of which (Locality B) is that 
from which the insects forming the subject of this paper were obtained 
(Text-figure 1). The localities discovered to date (including the above 
may be listed as follows : — 
Localities Supplied by H. Cribb. 
A. Portion 172, Parish of Chuwar. Found by Jones and Denmead. 
B. Portion 202, Parish of Chuwar. Found by H. Cribb. 
C. Portion 171, Parish of Chuwar. Found by H. Cribb. 
D. Portion 22-23, Parish of Kholo. Found by H. Cribb. 
E. Portion 10-11, Parish of Kholo. Found by H. Cribb. 
* Verbal communication from Dr. W. H. Bryan, 
H 
