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Annals of the Carnegie Museum. 



laboratory. The writer has been assured that the contacts within, 

 which are not now visible, justified the proportions 

 which are shown by the specimen, but nevertheless 

 is disposed to believe that the restored bone does not 

 quite fully represent the entire length of the sternal 

 part as it was in life. It is proportionately consid- 

 erably shorter in its total length than the correspond- 

 ing bone in other crocodilians. The relative length 

 and shape of the capitulum and tuberculum is very 

 like what is seen in the crocodiles of to-day. The 

 tuberosity is well developed and directed forward 

 and slightly more downward than in recent crocodilia. 

 In addition to the specimen which is here figured 

 there were found a number of fragments of ribs, one 

 of them apparently the proximal end with the cap- 

 itulum of the third thoracic rib of the left side ; 

 another evidently a piece of the upper portion of 

 the first rib of the right side carrying the tuberosity, but lacking the 

 capitulum and tuberculum, and still another which is apparently the 



First 



A 



Fig. 5 

 cervical rib of D. 

 hate he ri. \ nat. 

 size, a, inner sur- 

 face : b, outer sur- 

 face. 



Fig. 6. Seventh (?) dorsal rib of D. hatcheri. \ nai. size, a, posterior sur- 

 face ; b, anterior surface. 



proximal end of the fifth dorsal. A few fragments of the distal end of 

 the ribs also occur in the mass of bones picked up by Mr. Utterback. 



