382 T. G. HALLE. [XOV. 1913. 



Explanation of Plates. 



PI. J>. 



Fig. 1. Ptilophyllum acutifolium MORR. Reproduction, in natural 

 size, of the twice enlarged fig. 1 a, pi. 2. of Feistmantel: 

 Ueber die indischen Cycadeengattungen Ptilophijllum und 

 Dictyozaniites, 1876. 



Figs. 2 — 5. Ptilophyllum pectinoides (PlllLL.) MORR. Portions of 

 fronds from the Lower Estuarine Series of the Inferior Oolite, 

 at Whitby, Yorkshire, showing the pinna-bases, X 2. 



PI. 10. 



Figs. 1—3. Zamites antarcticus Halle. from the Jurassic of Hope 

 Bay, Graham Land. Fig. 1, portion of the frond in text- 

 fig. 13 c of Halle : The Mesozoic Flora of Graham Land; 

 nat. size; tig. 2, two pinna-bases from the same specimen, 

 showing indications of callosity, X 5; fig. 3, jnnna-bases of 

 another specimen, x 5. 



Fig. 4. Zamites pusillus Halle. Pinna-bases of the specimen in 

 PI. 7, fig. 12, and text-flg. 12 a of Halle : The Mesozoic 

 Flora of Graham Land, X 5. 



Figs. 5, 6. Zamites hrevipennis Heer, from the Cretaceous of 

 Western Greenland, X 2^ 2. Fig. 5, part of the specimen 

 in PL 15, fig. 10; fig. 6. of the one in PI. 15, fig. 9, of 

 Heer: Die Kreide-Flora der arctischen Zone. Flora fossilis 

 arctica. Vol. 3. 



Fig. 7. Zamites gigas (Lindl. & HuTT.) AIORR. Large slab with 

 several fronds from the Lover Estuarine series in the In- 

 ferior Oolite of Whitby in Yorkshire, reduced to ^ '4 of the 

 nat. size. 



All the specimens figured, with exception of the reproduction in PL 

 1. fig. 1. are in the Palaeobotanical Department of the State Mu- 

 seum of Natural History at Stockholm. 



