so. 2245. BONES OF BIRDS FROM WFST INDIES— WETMORE. 519 



TliQ limb bones that represent this new form bear a striking re- 

 semblance to those of GalUrallus in their strong, robust development. 

 In length, bones from the hind-limb in the two genera are practically 

 the same. Nesotrochis has the femur heavier and more strongly 

 curved while the tibio-tarsus is very similar save that the condyles 

 are broader and stronger than in GalUrallus. The discovery of other 

 parts of the skeleton of Nesotrochis will be awaited with interest as 

 it may be supposed that they will show marked differences from the 

 type found in other New World rails. It is possible that this species 

 possessed feeble powers of flight or even that it was flightless, facts 

 that might account for its extermination when its haunts were in- 

 vaded by man. 



ANGUS STOLIDUS (Linnaeus) C). 



A partly complete left humerus agrees with the large wing bone 

 of the Noddy fairly well, but the identification is not certain. The 

 skeletal material available at present in the Sterninae is small and 

 several important species are lacking, so certain identification in the 

 case of this one bone is made difficult. The Noddy is not known 

 at present from St. Thomas, but occurs on other islands not far 

 distant. 



STERNA, species. 



The shaft of a right humerus belongs in this genus. It is possible 

 that the species represented in Sterna anaetheta (Scopoli), but skele- 

 tons of this species are not available for comparison. 



LIST OF SPECIMENS FROM ST. CROIX. 

 PUFFINUS, species. 



The proximal end of a right humerus in the material from St. 

 Croix belongs to a shearwater, but with the material available it can 

 not at present be identified. The bone in question represents a spe- 

 cies larger than P. Ihet^ninieri and smaller than P. gravis so that by 

 a process of elimination it may be supposed that it is P. puffinus, as 

 that species is intermediate in size between the other two. Some 

 weight is given this supposition when it is remembered that a shear- 

 water of this group has recently been described from Bermuda as 

 Pufflnus p. hermudae by Nichols and Mowbray.^ No skeletons of this 

 species are at hand for comparison so that the matter of the deter- 

 mination of this fragmentary humerus is left in abeyance. The bone 

 in question is of the type that has the shaft well rounded below the 

 head. No species of shearwater has been recorded previously from 

 the island of St. Croix. 



SULA PISCATOR (Linnaeus). 



This species is represented by the shaft of a right humerus from 

 which both condyles and head are gone. The humeral shafts in S. 



1 Auk, 1916, p. 195. 



