fi(3 MEMOIBS OF THE QUEENSLAND MUSEUM. 



from the Darling' Downs, being heautotypes. These specimens, however, wei-e 

 too incomplete to suggest to De Vis the immense accessor}^ processes. Sufficient 

 of the anterior- zygoma root is present to show the special characters of 

 Euryzygoma. It would therefore be unwise to give our material a new specific 

 name. In the circumstances, it is necessary to use De Vis's specific name in 

 conjunction with the new genus. 



EURYZYGOMA DUNENSE. 



Material. — This consists of a cranium whieh was received in over 

 seventy pieces. The maxilla and premaxilla were practically the only parts 

 which were intact. Fortunately the bones were in excellent condition, not 

 being decomposed, and as many of the fractures were obviously made in 

 bringing the remains to light, the zygomatic arches, with their inferior lateral 

 processes, and the main portion of the superior cranial contours have been 

 united without any doubt as to their real position. The fitting together of the 

 smaller pieces, especially in the basioccipito-sphenoidal region, however, demanded 

 infinite patience. Practically no reconstruction was necessary, the actual bones 

 themselves supplying the natural contours, and it has been deemed inadvisable 

 to fill in the comparatively unimportant missing parts. The full molar series 

 is present on each side, but the incisors have been lost post mortem. 



The specimen was probably a fully mature male. Many of the cranial 

 sutures are ankylosed to extinction. Reg. No. F 1327. 



Locality. — The cranium was discovered in sandy soil at a depth of 

 about 70 feet at Brigalow, Darling Downs, Queensland, when a well was being 

 sunk on the property of Mr. G. A. F. Kleidon, who subsequently donated the 

 fragments to the Queensland Museum. On behalf of this institution it is my 

 pleasant duty heartily to thank ]\Ir. Kleidon, and also Mr. Wilson w^ho 

 forwarded the pieces. It is to be hoped that this handsome donation will be 

 supplemented later by remains from this district demonstrating an association 

 of bones. 



Description. — The maximum length of the cranium "between uprights" 

 (condyles to gnathion) is 634 mm.; the maximum breadth across the zygomatic 

 processes is 680 mm,; the maximum height (between parallels from the bregma 

 and the inferior border of the zygomatic processes) is 343. The calvarium is 

 dwarfed by the extraordinary development of the zygomatic arches and 

 processes. The breadth of the occiput (calculated from the fairly complete left 

 moiety) is approximately 290 mm. The occipital region, which is somewhat 

 concave, Avith a median vertical ridge, slopes forward at an angle of 45° to 

 the plane of the bony palate. Posteriorly the lambdoid crest is broadly convex. 

 From the lambdoid crest, the superior contour of the calvarium along the 



