ADDITIONS AND CORRECTIONS. 401 



Tursio Abusalam (page 261), add to synonyms :— 



Delphinus hama,taB,"I£emp.^£hrenb.," Wiigmann,inSchreh. Saugeth. 



18. t. 369 (skull) ; ScUegel, Abhandl. i. 29, 

 D. Abusalam, Wagner, ScTireh. Suppl. vii. 324. 



After TURSIO, (at page 267) add:— 



4*. SOTALIA. 



Beak_ depressed, rather longer than the brain-cavity. Palate flat. 

 Lower jaw rather broad behind; symphyses short. Teeth slender, 

 conical. Pectoral fin obliquely truncated. Forearm-bones free ; 

 hand shorter than the arm. Carpal bones five, small, surrounded 

 by cartilage. Phalanges of the index finger six, of the middle 

 finger five, and the fourth finger one. 



1. Sotalia Guianeusis. 



Delphinus Guianensis, Van Beneden. 

 Tursio Guianensis, Caial. 257. 



Inhab. British Guiana. Mus. Stuttgart. 



The skuU diflfers greatly from that of D. microps, with which it 

 has been compared, in the length of the beak and the shortness of 

 the symphysis. 



" Ce dauphin presente dans la conformation de son squelette 

 diverses particularites qu,i lui donnent un certain interet. La co- 

 lonne vertebrale est tr^s-massive principalement a la region caudale ; 

 la nagepire pectorale. est fort-^tendue en largeur. La tete a un 

 aspect h, part, surtout par la conformation du maxillaire inferieur." 



" Yertebrae 55 : thoracic 12, lumbar 14, caudal 2^, cervical 7. The 

 first two cervical are united, the five others are free and have long 

 bodies, making a long neck, as in the Platanistce, which have a 

 simUar-shape.d, pectoral. The caudal vertebrae form tvp^o distinct 

 series, the first thirteen have large bodies, and are much higher 

 than, broad; the first nine have the upper spinous apophyses well 

 developed ; and the first seven have transverse processes ; the twelve 

 chevron bones are very strpng ; the last nine caudal vertebrae are 

 much Repressed, and twice as broad as high. Eibs 12 . 12 : the first 

 rather, the broadest, the first four only have a double articular sur- 

 face, the first five are articulated directly to the sternum. The 

 sternum is formed of three distinct bones, the front being the largest. 

 The pectoral fin is only rather longer than broad, and is not so long 

 as the arm-boneS united ; the bladebone is much extended in form, 

 and has the acromion and coracoid well developed. The two bones 

 of the forearm are rather longer than the humerus. The radius is 

 very broad. Carpal bones five, in two rows, the three upper being 

 the largest ; metacarpals five. There is no phalange for the thumb, 

 only one for the little finger, six for the index, and four for the ring 

 finger. 



" The skull is rounded on all sides, the falx is ossi&ed, the face is 

 slender, the nasal canal open, the vomer is shown above between the 



2d 



