470 KAM.iKICHI KISHINOUYE : 



Fig. 38. Skeleton of O-ymnosanla muln. a. Dorsal view of the skiill. h. Vfntml view of the 

 skull, c. Ventral view of anterior preciuiJnl vertebrae to the first vertebra in which the hnemal 

 arch is closed, d. Dorsal view of the vertebrae of the caudal peduncle. 



PL.\TE xxni. 



Fig. 39. Skeleton of Acmühocylnwn solandri. a. Dorsal view of the skull, h. Vi-ntral view 

 of the skull, c. Ventral view of anterior precaudal vertebrae to the first vertebra with the closed 

 haemal arch. d. Dorsal view of the vertebrae of the caudal peduncle. 



Fig. i'). Skeleton of Oyhium c7dnmne. a. Dorsal view of the skull, h. Ventral view of the 

 .skull with following vertebrae, c. Dorsal view of vertebrae of t'le caudal peduncle. 



PLATE XXTV. 



Fig. 41. Skeleton of Oyhium niphonium. a. Dorsal view of the skuil. h. Ventral view of 

 the skull and precaudal vertebrae, c. Dorsal view of vertebrae of the caudal peduncle. 



Fig. 42. Skeleton of S irda orientijlis. <i. D irsal view of the skull, /i. Ventral \-iew of the skull. 

 c. Ventral view of .anterior jirecaudal vertebrae, d. Dorsal view" of vertebrae of the caudal peduncle. 



PLATE XXV. 



Fig. 43. Thwmus orlental'is. Immature specimen, about six months old. 

 Fig. 4:4. Skelton of the above. 



PLATE XXVI. 



Fig. 45. Niotlmnmis maci-opterus. (Immature). 

 Fig. 46. 2'Aim«iis germo. 



PLATE XXVn. 



Fig. 47. Pamtliumms ine'inchl (Immature). 

 Fig. 48. Keothunmis rams. 



PLATE XXVni. 



Fig. 49. Skull and vertebral cD'.umn of Paruthtmnus mchac/d,. 



Fig. 50. Skull and vertebral column of Thwmus orientaVui. 



a. Dorsal view of the skull, b. Ventral view of the skull, c. Ventr:il view of the 

 anterior vertebrae till the fir.st haemal arch is closed. -Anterior Zygapophyses 

 of the second vertebra are represented in Th. orktilnlli only. d. Dorsal view 

 of the caudal vertebrae. {Th. orkiUalis, ventral view?) 



PL.ATE XXIX. 



Fig. 51. Skull and vertebral column of Xeothmiynts mairoptoiis.. 

 Fig. 52. Skull and vertibral cohimn of Thunnus gcrmo. 



