THE FISHES OF NEW JERSEY. 85 



Genus Acipexser Linnaeus. 



The Sturgeons. 



Key to the species. 



a. Space between dorsal and lateral shields with stellate plates of rather 



large size in 5 to 10 series. STURio 



aa. Space between dorsal and lateral shields with minute spinules in very 



many series. brevirostrum 



Acipenser sturio Linnaeus. 



Sturgeon. ]\Iamoose. ^lamouche. ^loose. 



Head about 37/3 : depth about 7; D. 38; A. 23; snout nearly 

 2 in head; width of mouth ^Yi ', interorbital space 3^/7; height 



Sturgeon. Acipenser sturio Linn^us. 



of dorsal along front edge 3: of anal 3; pectoral 2j4 ; ventral 

 4^: length of caudal peduncle 37^; eye 3^ over interorbital 

 space: lower lobe of caudal 2j4 in its length. Snout sharp, 

 longer than rest of head. Eye a little elongate. Barbels a little 

 nearer mouth than tip of snout. Nostrils near together in front 

 of eye. Gill-rakers short knobs. Shields not striate strongly, 12 

 before dorsal, 28 in lateral line and 1 1 betAveen pectoral and ven- 

 tral. Skin roughened. Dorsal far back, a little before anal. Cau- 

 dal ending in a long slender point, lower lobe rounded. Pectoral 

 broad, reaching about one-third of space to ventral. Ventral 

 inserted about last third in space between gill-opening and origin 

 of lower caudal lobe. Olivaceous-gray, paler below. Length 

 115^ inches. May of 1898. Riverton, in the Delaware. 



Usually in the Delaware and fairly abundant, though I have 

 never observed them above Trenton. The river fishermen still 



