220 PROCEJWINGS OF THE NATIONAL MUSEUM. vor,.xxi. 



missing portion of the tall trunk which those two pieces are believed 

 to have so nearly constituted. The eight fragments together weigh 

 9.5 kg. 



No. 87 also consists of a number (five) of small fragments that can be 

 built up into a segment of a trunk, aiul altogether weigh 7.G kg., but 

 these do not so closely resemble the type specimens. Still, the charac- 

 ters they possess are those of this species. Professor Marsh thought 

 that these specimens came from the Blackhawk locality, but Mr. Still- 

 well, from whom they were purchased, states that they were obtained 

 3 miles southwest of Minnekahta station. This agrees closely with the 

 original locality. I am disposed to believe that there has been some 

 mistake, and that these particular specimens are, after all, from the 

 Blackhawk region. 



Of the other lili from the Blackhawk region Nos. 01, 113, 120, and 124 

 are somewhat doubtful. No. 91 has a large terminal bud, 8 cm. high, 

 elliptical in cross section, and 15 by 20 cm. in diameter, studded with 

 polygonal bract scars, 5 to 8 mm. in diameter, filled with the bases of the 

 bracts or small leaves matted together and exposed on the sides of 

 the terminal bud which have suttered from erosion. I have not included 

 this bud in the description of the species on account of doubts as to the 

 true affinities of this specimen, which, if it belongs here, is the only one 

 in which the bud is i)reserved. The surface is so badly worn that all 

 the reliable characters are obscured except that in general shape the 

 specimen agrees with others of this species. The scars are large and 

 the walls thick, which further confirm this supposition. No. 113 is also 

 badly worn and metamorphosed, but probably belongs to this species. 

 It is a fine trunk, nearly complete, 55 cm. high, and weighs 91.17 kg. 

 No. 120 is an interesting specimen, and shows a great number of large 

 fruits which stand out, having resisted the deep erosion of the surface. 

 No. 124 is a mass of quartz and only a fragment, but in all probability 

 came from a trunk of C.jcnncyana. 



The lest of the specimens, though mostly fragments and segments 

 from large trunks, are not doubtful, as they show surface characters in 

 all cases which are distinctive. Several, however, are fine trunks. 

 No. 101, though in three sections perlectly fitting together, is an almost 

 perfect trunk, laterally compressed, 97 cm. high, and weighs 183.71 kg,, 

 which is a little more than one kilogram heavier than both pieces of the 

 tyjie specimen from the State School of Mines of South Dakota. Unfor- 

 tunately the surface is badly worn and the most important characters 

 are obscured. No. 102 is the lower part (30 cm.) of the largest trunk 

 of the species thus far known. It is nearly circular in cross section, 

 has a diameter of 47 cm. and a girth of 15(1 cm. Its surface is also in 

 a fair state of preservation. No. 121 is a similar but much smaller 

 basal i3ortion. No. 115 is anomalous in many respects and might have 

 been included among the doubtful cases. Though in two pieces it is 

 nearly complete and weighs 87.77 kg., having a height of 60 cm. and a 

 girth of lOG cm. Some of the leaf bases are horizontal, while others 



