334 L. F. Ward — Fossil Cycads in the Yale Museum. 



C. turrita and was so referred, when joined to No. 480, to 

 which it belongs, proves to represent C. minnelcahtensis. 



Other alterations made are as follows : 



In one case, viz., that of No. 110, 1 have changed the assign- 

 ment previously made and published in the Nineteenth Annual 

 Report of the U. S. Geological Survey (pp. 614, 615, pis. xcix 

 and c), referring it to C. ingens instead of C. MoBridei. This 

 change is important because this specimen was the only one 

 from the Blackhawk region that I had referred to the latter 

 species. After an examination of the much larger collection 

 now in hand from that region, I am satisfied that this specimen 

 belongs to C. ingens, and that C. MoBridei is not represented 

 in that section of the Black Hills. 



The small specimen, No. 53, which I regarded (loc. cit., p. 

 615) as perhaps a "miniature" or "undeveloped" form of C. 

 MoBridei, I now make the type of a new species, Cycadeoidea 

 minima, represented by 17 specimens (see infra, p. 341), and 

 I do the same with another small specimen, No. 32, which I 

 doubtfully referred (loc. cit., p. 608) to O. minnekahtensis as a 

 dwarf representative similar to the specimen No. 19 of the 

 U. S. National Museum. This new species is now represented 

 by 20 specimens, all but one of which are in the Tale 

 Museum, and may bear the name Cycadeoidea protea (see infra, 

 p. 343). 



After all possible assignments had been made and the inde- 

 terminable material separated out, there remained 60 specimens 

 which, while exhibiting good specific characters, were not refer- 

 able to any of the species described. These 60 specimens, 

 however, proved to belong to very different types, and a care- 

 ful classification of them shows that they constitute 7 distinct 

 specific groups, or, in other words, 7 new species. The sys- 

 tematic description of these new species will therefore be our 

 next and final task. 



Cycadeoidea superba n. sp. 



Trunks large (30-40 cm high, 30-50 cm in diameter, with a 

 girth of over one meter), short-conical or somewhat globular, 

 little compressed, unbranched ; rock soft but not fragile, red- 

 dish brown, of low specific gravity ; organs of the armor 

 horizontal except near the summit where they are ascending 

 and pass into a large terminal bud, which, however, is some- 

 times wanting, and a cavity, or crow's nest, occupies the sum- 

 mit; scars definitely arranged in spiral rows around the trunk, 

 the angle made by the rows with the vertical axis diminishing 

 above, those from left to right making an angle of 20-35°, 

 those from right to left from 60-75° ; leaf scars subrhombic, 

 high in proportion to their width, the vertical angles usually 



