314 
Explanation of Plates. 
XLVI. 
Fig. i .—Receptaculites fergusoni Chapman.' Polished face of section 
passing horizontally through the summit plates of the interior 
of cup and across the ends of poillars at the lower right hand 
corner. Griffith’s Quarry, Loyola. M.D No. 2482. x i] 
Fig. 2.— R. fergusoni Chapman. A magnified horizontal section 
through summit plates. M.D. No. 2482. (Slide No. 
1386.) x 6. 
Fig. 3.-— R. fergusoni Chapm. Summit plates in oblique section; also 
a pillar cut transversely. M.D. No. 2482. (Slide No. 
1386.) x 6. 
Fig. 4.— R. fergusoni Chapm. Section through several pillars. M.D. 
No. 2482. (Slide No. 1386.) x 6. 
XLVI I. 
Fig. 5 .—Cyathophyllum approximans , sp. nov. Transverse section of 
corallum. Cooper’s Creek, Thomson River. A. W. 
Cresswell col.. (Nat. Mus.) x 6. 
Fig. 6.— C. appro ximans, sp. nov. Portion of corallum, weathered 
surface. Cooper’s Creek. M.D. No. 746. Natural size. 
XLVIII. 
Fig. 7 .—Phillipsastrcea walli R. Etheridge fil. Weathered surface of 
corallum. Griffith’s Quarry, Loyola. M.D. No. 2489. 
Nat. size. 
Fig. 8.-— P. walli Eth. hi. Vertical section of corallum. Griffith’s 
Quarry, Loyola. M.D. No. 2491. (Slide No. 1375.) 
x 6. 
Fig. 9.— P. walli Eth. fil. Horizontal section of corallum, showing 
the thin-walled septa. Griffith’s Quarry. Lovola. M.D. 
No. 2491. (Slide No. 1374.) x 6. 
XEIX. 
Fig. 10 .—Phillipsastrcea speciosa, sp. nov. Weathered surface of coral¬ 
lum. Griffith’s Quarry, Loyola. M.D. 2487. Nat. size. 
Fig. 11.— P. speciosa , sp. nov. Horizontal section of corallum. Griffith’s 
Quarry, Loyola. M.D. No. 2487. (Slide No. 1387.) 
x 6. 
L. 
Fig. 12.— P. speciosa, sp. nov. Vertical section of corallum. Griffith’s 
Quarry, Loyola. M.D. No. 2487. (Slide No. 1388.) 
x 6. 
Fig. 13.— P. speciosa, sp. nov. Horizontal section of corallite more 
highly magnified, showing carinate and perforate septa. 
Griffith’s Quarry, Loyola. M.D. No. 2487. (Slide No. 
i3 8 7 : ) x 35- 
Fig. 14.— P. speciosa, sp. nov. Horizontal section of corallite, showing 
perforate septa. M.D. No. 2487. (Slide No. 1388.) 
x 35- 
