20 BULLETIN 3G, UNITED .STATE8 NATIONAL MUSEUM. 



closely with these, but is larger, and evidently belonged to an older 

 individual. The beak is relatively longer. I regard it identical with 

 S. twiLvi, and have included it in the table of measurements under that 

 name. It is said to have come from Florida, but the evidence is not 

 entirely satisfactory. This skull also agrees well in proportions and 

 details of structure with that figured by Van Beneden and Gervais 

 uiuler the name of S. pallida (Ost6ographie, pi. XLi, lig. G). 



Van Beneilen's measurements of the exterior and skull of his >S', hra- 

 sinensis are appended for convenience of reference : 



Afeasuremcnts of Sutalia hrasilionsis. 



Exterior: Metres. 



Total length 1.21 



Extremity of beak to eyo 0. 18 



Eye to base of pectoral 0. 14 



Lengtli of the base of the pectoral at its insertion 0. OG 



Pectoral to extremity of spinal column 0, trS 



Extremity of beak to base of pectoral 0.30 



Vertical heigh t of body in front of the dorsal 0. 23 



Greatest height of the tail 0. 12 



Length of the pectoral 0, 155 



Height of the dorsal 0. 11 



Total breadth of the lliikes 0.32 



Skull: 



Total length 0.305 



Length of beak 0. 1()5 



Antero-posterior diameter of cranial cavity 0. 100 



Breadth of skull between temporal fossai 0. 130 



Breadth at the zygomatic apophyses of temporal 0. 130 



Height of skull between the crest and the bason 0. 110 



Breadth of beak at last tooth 0. 0.'j2 



Height at same point 0. 022 



Height of foramen magnus 0. 042 



Greatest breadth of same 0. 035 



Breadth of one of the occipital condyles 0,022 



Greatest diameter of condyle 0. 038 



For 8. fluviatilis, Gervais gives only the following measurements: 



Metres. 



Total length of body* 1.108 



Greatest girth 0. 70 



Skull: 



Length of beak 0.20 



Breadth of enlarged part preceding the beak 0. 14 



Length of mandible 0.270 



Length of tooth row of same 0. 105 



Length of the symphysis 0. 050 



For S-x^cillidci his measurements are as follows: 



M. 



Length of body 1. 05 



Greatest girth 0. 98 



Skull: 



Total length 0.34 



Enlarged iiart preceding the base of the beak 0. 12 



* Weight, 37.5 kilograms. 



