490 • CARBONIFKHOUS TRILOBITES OF AUSTRALIA, 



Fig. 5. — The natural cast. Part of the right side of thecephalon is absent. 

 Shows traces of the left genal spine. (Coll. Geological and Mining 

 Museum, Dept. of Mines, Sj^dnej-. Fig. 3, FloOO, etc.). 

 Phillipsia dimgof/ensis Mitchell. 

 Fig. 6. — Part of a pygidium, showing the continuous border, and other 

 essential features. (Coll. Geological and Mining Museum, Dept. of 

 Mines, Sydney. Xo. 1494). 

 Fig. 7. — A smaller and nearly perfect pygidium; (x^). (Coll. Geological 

 and Mining Museum, Dept. of Mines, Sydney. No. 1494). 

 Phi/Npsia rohusta Mitchell. 

 Fig. 8. — Another view of the pygidium, only less enlarged. 



Phillipsia ivoodwai^di Eth.fil. 

 Fig. 9. — Medial portion of a cephalon much weathered. (Coll. Geological 

 Museum, Dept. of Mines, Brisbane. No.F. 1017). 



Plate xlviii. 

 All figures on this Plate x % about. 

 Griffith ides conrexicaiidatus Mitchell. 

 Figs.l, 2. — Dorsal and side-view. 



Fig, 3. — Pygidium and free cheek, with the ej'e of a young individual: the 

 free cheek partly covering the tail. (Coll. Mitchell). 



Phillipsia rouchelensis Mitchell. 



Figs. 4, ."), (>, 7. — Four p3-gidia. Thej' exhibit the specific features. Figs. 

 o and 7 are photos of the specimens used bj^ Mr. Etheridge for his 

 figures (PL xxi., figs. 6-7, opj. cit, antea). (Coll. Geological and 

 Mining Museum, Dept. of Mines, Sj'dney. Nos. E 1495, 3534 (2), 

 F 1595). 



I^hiUipsia colli n-'<i Mitchell. 



Figs. 8, 9. — Fragmentary head-shield, and faint outline of a poorly pre- 

 served l)ut almost complete individual. In Fig. 8, all the glabellar 

 features are visible. (Coll. Mitchell). 



Phillipsia staiirellensis Mitchell. 



Figs. 10. 1 1, 12. — Three different views of a mature individual. The speci- 

 men represented by these figures was used bj^ Mr. Etheridge for his 

 Queensland type of P. dubia (PL viii., fig.5, op. cit.). (Coll. (geolo- 

 gical Museum, Dept. of Mines, Brisbane. No.F9«i9). 



Fig. 13. — On this photo are the middle pait of a cephalon and a pygidium 

 of an immature individual. The former shows the normal and 

 dunce's hat-like shape of the glabella, globular basal glabellar lobes, 

 and the relatively strong neck -ring. The pygidium shows the iiar- 

 row, prominent axis, etc., characteristic of the species. (Coll. Geo- 

 logical Museum, Dept. of Mines, Brisbane. No.F 980). 



