TllF, MAUVLAXn ('Y('.\1>S. 43iJ 



,,H,ut twn-lhinls or n very low. llal tnu.k, nunplot. a1 Loth l.aso n.ul 

 sunmiit whi.'h. althou-h ii has <loul,tless suftVml nmch trom vrrtical 

 ,„,npression, nmsi have b(vn urisinally oxreeaingly short m proportion 

 to it. dia.ncMor. There is a lar^e a.xl ratlier (l<H>p depression at the Ixise. 

 with a central elevation, uU of which seems to have exist.-.l lH>f..re h.ssil- 

 i/alion There is also a broad, shallow .lepivssion at the sununit and 

 the smalh'r i>ier(> has lost soinethino; here iVon. fracture These two 

 depressions ,ch1uc(> ihv specimen to the shape of a car wheel The whole 

 surface is stained a li^ht ocher by the red-paint clay in which it had lam, 

 l,„t it is white within. The rock is rather soft and li^ht. The maxmmm 

 vertical thickness is only 12 cm., but at the thmnest place m tlu' interior 

 it is less than -i cm. 1lie diameter is 3(i cm. and the specimen is nearly 

 circular in cross section. This would give the trunk a girth of 1 V.^ cm., 

 and the actual girth of the parts preserved is about 1 meter. (Tocanty: 

 PI. LXXX, near No. 75). 



Cycadeohjea Font.vineana Ward. 



PI T.XXXV1; PI. LXXXVII, Figs, i, 1; ni. 2, 6, S; iv. 1, 7, 9; v. 1. in. U. t3. 

 14, 16, IS, 21; PI. LXXXIX, Figs, i, 1: m, 1, :!, B, 7, 11: 11. XIV; 

 PI. XCVI; PI. XCVII; PI. XCVIII. 

 1897. Cyeadeoidea Fontaincam Ward: Proc. Biol. Sor. Washington, Vol. XI, p. i:-!. 

 Trunks small and low, usually much compressed or flattened verti- 

 callv li-ht brown to whitish in color, often spongy or porous, and of low 

 specific "gravity; leaves and spadices set nearly at right angles to the 

 axis- leaf scars not obviously arranged in spiral rows or imperfectly so 

 arranged, variable and irregular in shape, usually with four angles and 

 four curved sides, often in the form of a cross, rarely subrhombic, small, 

 8 mm. to 12 mm. in vertical and 14 mm. to 25 mm. in lateral measure- 

 ment, averaging 10 mm. by 19 mm; ramentum walls thick, 4 mm. to 

 10 mm usuallv without commissure or punctations; leaf bases rarely 

 present' when so, spongv or porous, without visible bundles; terminal bud 

 6 cm. high, 65 mm. bro:ul at the downwardly convex base, definitely 

 bounded "below, svmmetricall.>' conical above, consisting of a mass of 

 densely matted bracts imbricated along a central axis; reproductive 

 or^mns few and imperfectly defined, usually cavitous in the center and 

 sometimes surrounded by irregular-shaped In-act scars; armor rather 



