ÖFVERSIGT AF K. VETENSK.-AKAD. FÖRHANDLINGAR 1899, N:0 6. 547 



than 35 % of the lengtb of the body (without caudal 

 fin). — Gobius ceplialarges^ Pall. 

 Varieties: 

 1: in the Black-Sea-region. 



d) Longitudinal diameter of the eye less than 

 41 % of the length of the cheek (from the 

 end of the maxillary to the hind margin of 

 the preopercle) or 69 % of the length of the 

 nose. — Goh. eurycephalus, Kessl. + platyros- 

 tris, Pall., Kessl, + cephalarges, Pall. 

 b) Longitudinal diameter of the eye more than 

 45 % of the length of the cheek or 70 % of the 

 length of the nose. — Gob. ratan., NoRDM. 

 + syrman^ NORDM. + TraiUvetteri, Kessl. 

 2: in the Caspian region. 



a) Least depth of the tail more than 10.8 ^ of 

 the length of the body (without caudal fin) 

 or 28.9 % of the length of the base of the 

 second dorsal fin. 



aa) Length of the head more than 83 %, 

 distance between the origin of the first 

 dorsal fin and the tip of the nose more 

 than 92 %, length of the ventral fin more 

 than 56 %. length of the lower jaw less 

 than 36 % of the length of the base of 

 the second dorsal fin. — Gobius Goebelii. 

 Kessl. 



hb^ Length of the head less than 80 %, di- 

 stance between the first dorsal fin and 

 the tip of the nose less than 87 ^, length 

 of the ventral fin less than 55 %, length 

 of the lower jaw more than 39 % of the 

 length of the base of the second dorsai 

 fin. — Gobius Bogdanowii, Kessl. 



b) Least depth of the tail less than 10.6 % (but 

 more than 9 %) of the length of the body 

 or 28.5 Ya of the length of the base of the 

 second dorsal fin. 



aa) Length of the head more than 82.5 %, 

 lenath of the head reduced more than 



