202 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxvi. 



number the position of the third cervical could not be found on the 

 map, although it was associated with the bones of No. 4282. The 

 vertebrae of the next series, Nos. 101 to 106, while not interlocked by 

 their zygapophyses, were so closely associated that there can be no 

 question of their representing a series, and when prepared fit one 

 another perfectly. The position of the capitular facets and shape 

 of the spinous processes show them to pertain to the anterior dorsal 

 region. An interval of a foot or more existed between No. 106 of 

 this series and No. 76. In the next series, Nos. 120 to 136, the verte- 

 brae Avere found occupying their relative positions and but little dis- 

 turbed. From the adhering matrix I was able to connect up this 

 series from the mid-dorsal through the sacral into the anterior caudal 

 region, and an unbroken series is undoubtedly represented from the 

 eighth dorsal back through the sacrals to the fourth caudal, inclusive. 

 Caudals Nos. 168 to 169 and Nos. 158 and 159 were removed some- 

 what laterally, but were intermediate in size and appear to fill the 

 gap between 136 and 170. Nos. 170 to 174, with their chevrons, were 

 found articulated. Another series of four vertebra^ (block 208) was 

 shown in diagram 7, some 14 feet to the east of No. 174. But an 

 anterior zygapophysis, retained in place by the matrix of the latter, 

 was found to fit on the first vertel:)ra of this series, and so fixed beyond 

 doubt their proper position in the tail. Some 14 or 15 feet to the 

 north and east another series of eighteen distal caudals (Nos, 218 to 

 235) was found, most of them articulated or so closely associated 

 that it appears none are missing in the series. 



It is perhaps fortunate that while the other bones found in this 

 area represent the remains of several individuals, nearly all per- 

 tain to the genus /Sfef/osaurus, from which the elements of Cam.pto- 

 saurus are readily distinguishable. This remark applies particu- 

 larly to the rounded distal caudals of CamptoHaurus which may at 

 once be distinguished from the short hexagonal caudal centra of 

 Stegosaurus. That this distal series belongs to C. hroumi there can 

 be but little question. The ilia, Nos. 140 and 167, lay on their respec- 

 tive sides of the sacrum and but little removed from it, with their 

 anterior ends directed forward. The other pelvic bones were not 

 indicated on the map, but from their quarry numbers it was deter- 

 mined they could not have been far removed. Nothing of the hind 

 limbs was found. The right fore limb (and foot) Nos. 98, 101, 119, 

 and 120, were found to the west and right of the anterior cervicals. 

 From the fact that all of the elements pertain to a right limb and 

 closely agree in size with the left, its assignment appears certain. 

 Some scattered ribs and pieces found near the dorsals have been pro- 

 visionally associated with them. All of the remaining material 

 from diagrams 5 and 7 has been gone over carefully in the hope of 

 finding some elements of the skull and other missing parts, but with- 



