568 



MESOZOIC INSECTS OF QUEENSLAND. 



No. 4. Hemiptkra Hkteroptera : The Family Dtnstaxiid^'E. 

 With a Note on the Origin of the Hkteroptera. 



By R. J. Tillyard, M.A., D.Sc, F.L.S., F.E.S., Linnean 

 Macleay Fellow of the Society in Zoology. 



(Plate lix. ; and Text-figures 17-22). 



In 1916, I described (3) the l)eautifull\' preserved wing of 

 Dunstanio, pulchra Till., from the Upper Trias of Ipswich, 

 Queensland, and placed it as the sole representative of a new 

 family D\i7istaiiiid(E within the Order Lepidoptera. This deci- 

 sion had the concurrence of Dr. A. Jefferis Turner, of Brisbane, 

 and was based mainly upon the presence of eight longitudinal 

 veins in the fossil, this being the number found in the hind wings 

 of Frenate Lepidoptera. 



While the description of this fossil was going to press, I hap- 

 pened to be on a visit to Brisbane. A day or two before I left, 

 Mr. Dunstan showed me four other specimens bearing the label 

 *^ Du7ista7iia '' in pencil; these had just been discovered at 

 Ipswich. Two of them were broad wings resembling the type, 

 and two were much longer and narrower wings. Thinking that 

 these latter must be the forewings of the same insect as that 

 whose hindwdng I had assumed the type to be, I added the note 

 on p. 32 of the paper quoted above. However, when I received 

 from Mr. Dunstan, later on, the complete collection of Ipswich 

 Insects of which these wings formed a part, and had time to 

 work at them in detail, I soon found that the two narrow wings 

 did not belong to Dutistania at all; so that there remained onl}" 

 the two broad wings for study in connection with the original 

 type. Neither of these is in anything like as good a state of 

 preservation as the type is, and one of them is very poorly pre- 

 served indeed. 



