84 



■Reviews — DoUoi's Dinosauria of Bernissart. 



genera now. Some bones of the Iguanodon Seehji type may hav6' 

 been referred to Pelorosaurus in Mantell's collection, but the genu& 

 Pelorosaurus has no existence, and should be erased from catalogues 

 as having been founded upon a humerus of Cetiosaurus. 



In his second note M. DoUo limits himself to a discussion of the- 

 sternum. He describes the pair of large triangular bones with 

 elongated processes which were found in association with the 

 scapular arch, bones of the fore limb, and sternal ribs, and believes- 

 himself justified in concluding that they are in their natural undis- 

 turbed position in contact with the coracoids, and therefore combats 

 the conclusion of Professor Marsh that they are the clavicles. In 

 the remainder of the paper the author goes on to cite the descriptions' 

 of the sternal bones in other Dinosaurs, which have been given 

 by other writers. 



I give in outline the sternal apparatus as restored by M. Dollo. 



Scap. — scapula. Cor. — coracoid. St. — sternal tones. 



But I am unable to accept his arrangement of the bones. Fully 

 admitting that the bones which he terms sternal are in natural 

 contact with each other in his slab (pi. xii. fig. 2), I am unable to- 

 admit that they are in natural contact with the coracoids. Mr. 

 Hulke has been more fortunate in obtaining a better preserved 

 example of the sternal appai'atus of Iguanodon Mantelli (figured in 

 the Quart. Journ. Geol. Soc. August, 1885), and he regards the bones 

 cited by Dollo as a pair of sternal ossifications, comparable to the 

 immature sternum of a Struthious bird, as being clavicles — a conclu- 

 sion previously arrived at by Mr. William Davies, and adopted by 

 Professor Marsh. I first studied the specimen described by Mr.. 



