New (iiiil Rare Fossils. 189' 



Plate XVII. 



Fi<r. 10. — Holcofrochus crenulaftis, Deniiant. Lateral aspect. 

 Mallee Bore. No. 11, 107-19!) feet, x 26. 



11 a, h. — Mnps-ea ff/ii-soni, sp. nov. : r/, articular face of 



joint; h, lateral surface of joint. .Mallei Bore No. 11, 

 555-560 feet, x 8. 



12 a, h. — M. tenisoni. sp. iiov. : a. articular face of juint 



near distal ei:id of coi-alluni ; A. lateral aspect. Malice 



Bore No. 11, 544-546 feet. x S. 

 !•}. — M. tenisoni, sp. nov. Thin slice of a sector of a joint. 



magnified to show structure. Mallee Bore No. 11, 495- 



500 feet, x 52. 

 14. — Mopsea cf. encri nuhi , Lam. sp. (Living). A thin slice 



of a sector of a joint of the corallum, to show similarity 



of sti-uctui-e with that of the preceding- species. x 26. 

 15. — a-c. — M()/)Si(i sp.. cf. teitisoiii, sp. nov. : a-c, spicules or- 



scleroderinites. Mallee Bore No. 11. 546-548 feet. 

 X 52. 

 Ki.- — .1/. Jiamiltoni. Thomson sp., Articulai- face of joint. 



Mallee Bore No. 11, 505-510 feet. x 8. 



17 a, h. — his compressa, Duncan: a. lateral aspect; h, 



articular face. Mallee Bore No. 11, 495-500 feet, x 2. 



18 fi, h. — Afifedoii prototnocrniienid. sp. nov. : a, centiM- 



dorsal seen from the side; h. ventral aspect. Mallee 

 Bore No. 11, 430-432 feet. x 26. 



Plate XV 111. 



Fijr. \':\.—A„fedon sp. Cirrus joint. Mallee B.u-e No. 11, 560-562- 



feet. X 26 

 20. — Pentagonnsfer sp. Maiuinal plate. Mallee Bore No. 



11. 575-580 feet, x 4. 

 21. — Pentagonaster sp. Bitundcd plate of the ahactinal area. 



Mallee Bore No. 11, 575-580 feet, x 4. 

 22. — Goniocidaris sp. Hour-glass shaped spine. Mallee 



Bore No. 11, 5.30-535 feet. x 5. 

 23. — Echinoci/amus (Soifelli naS pdtelhi. Tate sp. Actinal 



surface showing niarsu]>iuni. Mallee Bore No. 11, 500- 



505 feet, x 2. 

 24 a, h. — Serpidct oiit/e/w/isix. s]). nov. : a. side view of larirc 



tube (spec. A); A, aperture. Mallee Bore No. 11, 585- 



590 feet, x 4. 



