JURASSIC fVCADS FROM WYO.MkNG. I'JT 



("ycadklla gki.id.v Ward. 



I'.IOO. Ciicadelhi fjd'ida Ward: Proc. Wasli. Ac-ad. .Sci., Vol. T, p. 2S1; Twontioth 

 \\m. K<"p. r. S. Gool. Surv., ISDS-OO, Pt. 11, p. 414, pi. clxv cl.xix. 



From a resemblance in the leaf scars and the jj^eneral texture a 

 number of small fragments found in tlie later collections are provisionally 

 referred to this species. 



Cy< ADELLA CARBOXENSIS Ward. 



!!)()(). Ciicadella carbonensis Waril: Proc. Wa.sli. Acad. .Sci., Vol. 1. p. 2S;2: Twentieth 

 Ann. Rep. U. S. Geol. Surv., lSflS-!)<), Pt. II, p. 41.j, i)l. clxx: pi. clxxi. 



In a few spots on the large type specimen, Xo. 500.2, the leaf scars ai-e 

 seen, and their great size (3 cm. wide by 15 nmi. high) was one of the 

 specific characters. Some are not more than 1 cm. high, with the maxi- 

 mum width. One small fragment, No. 500.376, shows scars exactly 

 like these. The texture and color of the rock are also the same, and it 

 is tolerably safe to.refer it to this species. 



Cycadella Knigiitii Ward. 

 PI. LXI. 



li)00. Cycadella Knigldli W'ard: Proc. Wash. Acad. Sci., Vol. I, p. 2,S.S, pi. xxi. 

 Twentieth Ann. Rep. U. S. Geol. Surv., 1S9S-99, Pt. II, p. 41(1, j)!. 

 clxxii-clxxvii. 

 Only one specimen in the latter collection l)elongs with any certainty 

 to this species, which was represented in the original collection by only 

 two specimens, viz, Nos. 500.65 and 500.33, the former one of the largest 

 and finest trunks found. The specimen now in question, though some- 

 what smaller than that, is also a large and practically complete trunk. 

 It is the Xo. 500.687, collected by myself. It is much compres.sed later- 

 ally, deeply hollowed, and much distorted on one side. The other side 

 is normal in shape and well preserved, but was so completely incrusted 

 with lime that it was necessary to place it in a vat of muriatic acid for a 

 considerable period. As this was the only side that .showed the scars 

 sufficiently well for determination, I was uncertain until the lime was 

 removed to what species it belonged. It proves to l)e C. Knightii, and 

 is therefore the third specimen of that species known. It is consider- 

 ably smaller than the type specimen, No. 500.65, and about the size 



