— 169 — JOHS. SCHMIDT 



the pigmented portion of the body. Pigment is present as a rule on 

 the end of the tail. 



Preanal pigment is well-developed and extends posteriorly almost to the 

 anus. The end of the notochord is already slightly bent upwards at a 

 length of 11 mm. The body not extremely elongated. Abdominal verte- 

 brae 18 — 19 Gadus callarias 



Preanal pigment is w^eak and far from reaching to the anus posteriorly. 

 The end of the notochord is still straight at a length of 16 mm. The 



body extremely elongated Gadus sa'ida 



(b)The postanal pigment ends abruptly some distance in front of the 

 end of the tail, which is pale and unpigmented, thus standing out in 

 marked contrast to the pigmented portion of the body. 



The preanal pigment is well-developed and reaches posteriorly almost to 

 the anus. The postanal pigment is evenly distributed over the sides and 

 is very conspicuous. The mediolateral streak is strong and unbroken. 

 The anus lies a considerable distance in front of D^. Abdominal verte- 

 brae : 20 — 22 Gadus poUachius 



The preanal pigment is weak and does not reach posteriorly to the 

 anus. The sides are densely pigmented with exception of a lighter, roundish 

 part centrally, where the mediolateral streak is often broken. The anus 

 lies a little in front of D 2. Abdominal vertebrae : 23—25 Gadus virens 



II. Main group. Mediolateral streak wanting. A posterolateral trans- 

 verse bar not present. 



(a) The postanal pigment ends abruptly a considerable distance in front 

 of the end of the tail. Apart from this the greater part of the sides 

 is covered by pigment. 



The body unusually high and narrowing abruptly towards the end of 

 the tail. The dorsal pigment does not reach further back than the ven- 

 tral Gadus luscus 



The body not unusually high and not narrowing abruptly towards the 

 end of the tail. The dorsal pigment reaches further back than the ven- 

 tral Gadus Poutassou 



(b) The postanal pigment does not end abruptly some distance in front 

 of the end of the tail. 



(a) The body unusually short and plump. Pectorals and ventrals generally 

 strongly pigmented. Posterodorsal and preanal pigment most often 

 veiy weak or wanting. Anterodorsal pigment very prominent. Anus 



far back, under D^ Gadvs ceglefinus 



iß) The body not unusually short and plump. Preanal and posterodorsal 

 pigment generally distinct. Pectorals and ventrals not pigmented, 

 (x) Greater part of the sides overstrewn with pigment. Anus far for- 

 ward under D^. No specially large chromatophores present. A' 



much longer than A ^ Gadus merlangus 



22 



