PROCEEDINGS OF UNITED STATED NATIONAL MUSEUM. 289 



Table of measurenwnts. 

 Species : Amiunu ponderosxu. 



Cnrrent ntimber of specimen . 

 Locality 



Length to origin of middle caudal rays 



Length to end of middle caudal rays 



Body: 



(greatest height 



Greatest width 



Height at ventrals 



Least height of tail 



Length of caudal peduncle 



Head : 



Greatest length 



Width of mouth 



Greatest width 



Width of interorbital area , 



Length of snout 



Extent of intei-maxiUary band of teeth 



Extent of intermaxillaries 



Leiigth of right maxillary barbel 



Length of mandible 



Distance from lower nostril to eye , 



Distnnce from snout to orbit , 



Distance from upper nostril to eye , 



Diameter of orbit 



Dorsal (tirst) : 



Distance from snout , 



Length of base 



Length of first spine , 



Length of first ray , 



Length of last ray 



Dorsal (adipose) : 



Len gth of base , 



Distance from snout 



Greatest height 



Anal : 



Distance from snout 



Distance from anus 



Length of base ~-. 



Length of first ray 



Length of longest ray (Gth) 



Length of last ray 



Candal : 



Length of middle rays 



Length of external rays 



Pectoral : 



Distance from snout 



Length 



Ventral : 



Distance from snoat 



Length 



Branchiostegals 



Dorsal 



Anal 



Pectoral 



Ventral 



23388 ?. 



Mississippi Kiver, near Saint 



Louis, Mo. 



Proc. Nat. Mus. 79 19 ]IIarch 3^, 1 8 80. 



