JURASSIC CYCADS FROM WYOMING. 195 



Cycadella crepidaria Ward. 



Pis. LVIII-LX. 



1900. Cycadella crepidaria Wa.i-d: Proc. Wash. Acad. Sci., Vol. I, p. 280; Twentieth 

 Ann. Rep. U. S. Geol. Surv., 1898-99, Pt. II, p. 413, pi. clxiii; pi. clxiv. 



Perhaps the most important and satisfactory result of the elaboration 

 of the additional material is that obtained for this previously little-known 

 species. It was represented in the original collection of Mr. W. H. Reed 

 by only one specimen, No. 500.83, which is very anomalous in form and 

 character, and no one cou d tell whether these would prove constant or 

 not if more material were to come to light. The pecuhar shape, resem- 

 bling a moccasin, was especially hable to vary. Neither was it probable 

 that the size would remain constant. It was interesting, therefore, to find 

 this species represented in the later collections. Among the fragments 

 collected by Mr. Gilmore were four pieces, all of which bore so strikingly 

 the characters of this species that I referred them to it before I discovered 

 that they belonged together. In the subsequent arrangement by species 

 these were brought into proximity, and I saw at once that they were parts 

 of the same trunk. Two of the pieces had previously been found to fit 

 each other and had been given the same number, No. 100.215. But one 

 of the pieces also fits No. 100.202, and this in turn matches No. 100.230. 

 The four pieces thus brought together form an almost complete trunk, 

 which, though considerably larger than the type specimen previously 

 known, has approximately the same anomalous shape, resembling a 

 human foot. The compression, however, is more oblique, and the axis 

 passes somewhat diagonally through the specimen. The greatest length 

 is 28 cm., the greatest width 14 cm., and the maximum thickness 9 cm. 

 It has a girth of about 35 cm. The four pieces together weigh 3.62 kg. 



There is a still larger specimen, No. 500.506, collected by myself, 

 which I must either refer to this species or else treat as a new species. I 

 prefer the former course, although it requires considerable explanation of 

 the specific characters. It is nearly circular in outline and greatly com- 

 pressed vertically, so as to have a somewhat lenticular shape with rather 

 sharp edges. The axis is slightly oblique; at least it emerges considerably 

 on one side of the center of the upper side. This axis is 12 cm. long, 

 which represents the greatest thickness of the specimen. The diameter 

 is about 24 cm. and the girth 75 cm. The surface is much obscured by com- 



