20 Mr. J. K. Norman—^ Revision 



pupil ; lower jaw projecting^. 24 gill-rakers on lower part 

 of anterior arch. Scales 34/14 (?) ; ventral scutes 20 -f 6. 

 Dorsal 16 ; origin a little nearer base of caudal than tip of 

 lower jaw. Anal 41 ; origin below first third of dorsal. 

 Pel vies shorter than eye. 



Total length 96 mm. 



Colon^ Panama. 



6. Neosteus furthii. 



Pellona furthii, Steindacliner, Sitzber. K. Akad. Wiss. Ixx. pt. 1, 



1875, p. 388. 



Depth of body 2§ to 2|- in the length, length of head 3| 

 to 4. Ventral profile very convex ; dorsal profile of head 

 a little concave. Snout shorter than diameter of eye, which 

 is 2f to 3 1 in length of head. 54-56 scales in a longi- 

 tudinal series ; ventral scutes 22-24 + 12-13. Dorsal 16-17; 

 origin a little nearer snout than base of caudal. Anal 49- 

 50 ; first 5-7 rays below dorsal ; length of base 2| to 2f in 

 length of body. 



Panama. 



7. Neosteus nmragansetce. 



Ilisha narragansetcB, Fowler, Proc. Acad. Nat. Sci. Philad. Ixiii. 191 1, 

 p. 208, fig. 1. 



Depth of body 3 in the length, length of head 3^. Ventral 

 profile more convex than dorsal. Eye 3 in head. Maxil- 

 lary extending to below anterior third of eye ; lower jaw 

 projecting. 22 gill-rakers on lower part of anterior arch. 

 Scales 49/14 (?) ; ventral scutes 25 + 7. Dorsal 18 ; origin 

 nearer end of snout than base of caudal. Anal 46 ; origin 

 just behind, dorsal. Pel vies small; inserted nearer to 

 origin of anal than origin of pectoral. 



Total length 147 mm. 



Rhode Island, Atlantic Coast of U.S.A. 



8. Neosteus panamensis. 



Pellona panamensis, Steindachner, SitzLer. K. Akad. Wiss. Ixx. pt. 1, 

 1875, p. 389. 



Depth of body 3^ to 3f in the length, length of head 3| 

 to 3|. Ventral profile a little convex ; dorsal profile of head 

 concave. Snout shorter than diameter of eye_, which is 3J to 

 3| in length of head. Scales 56-59/21-22; ventral scutes 

 22-23 + 12-13. Dorsal 16-17; origin equidistant from end 

 of snout and base of caudal, or a little nearer former. 

 Anal 49-51 ; origin just behind dorsal ; length of base 2| to 

 2| in length of body. 



Panama. 



