Apjjendix. 225 



above species, or possibly a new form. In the absence of any 

 knowledfro of the pypridial characters of P. mansfieldensis, Eth. 

 fil. and Mitch., we iiro unable to form any idea of its relation- 

 ship to our species, but it is just possible that the two may 

 bear some affinity. Relative to the present specimens, there is 

 a small pygidium of a Fhacops resembling the Glenbumie ex- 

 amples, from the Thomson River Limestone Beds, in the Na- 

 tional Museum colleetio.n, which I had previously compared with 

 P. hull ice ii.'i, Barrande. 



Dalmanites meridianus, Eth. fil. and Mitch. 



D. meridianus, Eth. fil. and Mitch., 1896, Proc. Linn. See. 

 N.S. Wales, vol. X., pt. 3, p. 504, pi. XXXVIII., figs. 1-8 ; pL 

 XL., fig. 1. 



Specimens of the above trilobite are numerous in the present 

 collections from Glenbiirnie Road and Comeitery Hill Road. They 

 include examples in almost every stage, varying in length from 

 2 to 10 cm. in the complete specimen. This trilobite was first 

 described from Victoria.n specimens by McCoy, under the name 

 of Phacops (Odontnchile) cnudatus^, but Messrs. R. Etheridge 

 and Mitchell have since shown it to be distinct from Briinnich's 

 species. It has usually been obtained in Victoria from the Kil- 

 more and Wandong Beds, which appear to contain a Melbournian 

 facies ; its persistence through at least two horizons, shown by its 

 occurrence here in the Glenbumie Beds with a Yeringian facies 

 is supported by its appearance in New South Wales in the 

 Middle and Upper Trilobite Beds of the Bowning Series. D. 

 meridianus is also recorded from Tasmania (Etheridge and 

 Mitchell), and there is a typical specimen from Zeehan in the 

 Nat. Museum coUeotioin. 



EXPLANATION OF PLATE. 



Spinfer periamellosus, J. Hall, var. densilinesta, nov. 



Fig. 1. — An imperfect brachial valve, showing strong 



lamellae. 

 Fig. 2.— A nem-ly complete brachial valve, decorticated. 

 Fig 3. — External mould of a brachial valve, showing the 

 closely packed radial striae. 

 These figures are about one-fourth larger than the original 

 specimens. 



1 Prod. Pal. Vict., dec. iii., 187(J, p. 13, pi. xxli., figs. 1-7; pi. xxiii., figs. 7-10. 



16 



