128 Kansas Academy of Science. 



atlas; fragments of the clavicular girdle. E. C. Case, collector, 

 Texas. 



Specimen No. 650. Skull nearly complete ; one dorsal vertebra ; 

 two posterior vertebrae; femur nearly complete and extremity of 

 metapodial. Of large size, the femur the largest of the collection. 

 P. C. Miller, collector, Texas. 



Specimen No. 651. Twenty-five vertebrae from different parts 

 of the column, but no cervicals. Right and left femora, several 

 extremities of epipodials; four united metapodials. Of small size, 

 the femora the smallest of the Texas specimens. P. C. Miller, col- 

 lector, Texas. 



Specimen No. 652. Complete skull ; twenty vertebrae, mostly 

 continuous from the skull, a few caudals, left coracoid attached in 

 position to the upper side of the complete clavicular girdle, as 

 figured; right and left humeri, the right one attached in position 

 to the under side of the cranial horn opposite the fifth vertebra; 

 distal extremity of femur. S. W. Williston, collector, Indian creek, 

 near the Wichita, Texas. 



In addition, large quantities of more or less broken bones be- 

 longing to at least two small species from the bone-bed near Or- 

 lando, Okla. Associated with this material, and in nearly every 

 case in immediate connection with Diplocaulus vertebrae in the 

 matrix, several humeri, femora and ends of epipodials ; none of 

 the limb bones matrically associated with bones of other forms. 



The above evidence would seem sufficient to satisfy the most 

 hypercritical. The remarkable fact is that nearly every specimen 

 observed the past season presented evidence of the extremities. 

 The limb bones, so far as known, indicate small extremities, rela- 

 tively quite small in proportion to the skull, or even to the vertebrae; 

 they could hardly have been of much use in terrestrial hjoomotion. 

 That the anterior limbs were attached quite close to the head will 

 be evident from the position of the humerus, as shown in figure 2; 

 in this specimen the vertebrae were curved closely to the side of the 

 horn, more so than is shown in the drawing. 



A nearly complete coracoid was found imbedded on the upper, 

 visceral side of the interclavicle, and is yet firmly attached to the 

 bone. Its position is such, immediately back of the clavicle, with 

 the articular surface for the humerus nearly flush with the left mar- 

 gin of the interclavicle, that there would seem to be no doubt of its 

 natural position. It is a thin bone, nearly regularly oval in shape, 

 save for the thickened emargination on the outer posterior part, for 

 the reception of the humerus. A small foramen is visible on the 



