543 



Öfv^ersigt af Kongl. Vetenskaps-Akademiens Förhandlingar 1899. N:o 6. 



Stockholm. 



Preliminary notes on the arrangement of the genus 

 Gobins, with an enumeration of its european species. 



By F. A. Smitt. 



(Communicated 1899, June 7.) 



After having determined and restituted tlie more than 300 

 specimens of Gobius from the Black-Sea- and Caspian regions 

 which were kindly sent me for examination from the Museum 

 of the Imperial Academy of Sciences of St, Petersburg, for the 

 understanding of my systematical arrangements I will give a 

 brief account of my views on the distinction of the species in 

 this genus, as far as they are represented in the Royal zoological 

 museum of Stockholm, forwarding to a future memoir the full 

 vindication of these views. 



The genus Gobius, as limited by Dr. Günther in his well- 

 known Catalogue, may be thus divided: 



I: Base of the second dorsal fin longer than the length of the 

 head and more than 24 % of the length of the body with- 

 out caudal. 

 I, a: Length of the head reduced (without opercle) less than 

 60 % of the length of the base of the anal fin. 

 A: Number of spines in the first dorsal fin more than 7. 

 a: Number of scales in a transverse row between the 

 origins of the second dorsal and anal fins more than 

 20: — Pterogohius, GiLL. 

 h: Number of scales in that naraed row less than 17 

 — ChcBturiclithys, RiCH. 



