ALESTES. , 191 



A. 25-.30 ; gill-rakcrs 30-:58 on lower part 

 of anterior tircli ; dorsal equidistant 

 from \('rtical of last ray of ventral and 

 first ray of anal, or a little nearer 

 latter 2. A. Imronose, Joami., p. 11)5. 



Ij. Dorj^al oi'iginating above ventrals ; scales .'^jD— 15 —.,,- ; gill-i-akers 17-20 

 on lower part of anterior arch. 

 A. 20-23; depth of body :U-1,^ times in 



total length ; interorbital width 3-3^ 



times in length of head ;}. A. macropJithalmus, Gihr., i). 107. 



A. 18-19 ; depth of body 3|-4 times in 



total hjngth ; interorbital width 2-2f^ 



times in length of head 4. yl. liehrecldsu, Blgr., p. 108. 



II. Scales 32-36 % 



A. Dorsal originating behind vertical of jjaso of ventrals ; depth of body 



3|-3^ times in total length. 



A. 23 ; a much developed adipose eyelid ; 

 gill-rakers 58 on lower })art of ante- 

 rior arch 5. ^1. stuhlmanni, Pfeff., p. 190. 



A. 19-20 ; adipose eyelid feebly developed ; 

 gill-rakers 17-18 on lower part of an- 

 terior arch G. A, sadleri, Blgr., p. 200. 



B. Dorsal originating above base of ventrals ; depth of body not more than 



3 times in total length. 



A. 2G-28 ; head a little longer than deep ; 

 interorbital width not 3 times in length 

 of head 7. ^1. ^/(o/Zo;;/, Pellegr.^ p. 201. 



A. 22-24 ; head as long as deep ; inter- 

 orbital width 3 times in length of head. 8. A. intermedins, Blgr., p. 201. 



III. Scales 21-33 lii! • 



A. Dorsal originating above or immediately behind vertical of base of ventrals. 

 1. 5^ series of scales above lateral line. 



a. Dorsal originating above base of ventrals. 



A. 22-24 ; Sc. 24-29 ; gill-rakers 12-14 on 



lower part of anterior arch . . . . 0. yl. long'qnnnis, Gthr., p. 202. 



A. 18-19 ; Sc. 30-33 ; gill-rakers 20-27 on 

 lower part of anterior arch ; inter- 

 orbital width 3 times in length of head. 11. ^1. lateralis, Blgr., p. 204. 



A. 14-18 ; Sc. 2G-33 ; gill-rakers lG-20 on 

 lower part of anterior arch ; inter- 

 orbital width not 3 times in length of 

 head 12. ^1. tiurse, Jl'npp.. p. 205. 



