ÖPVBRSIGT AF K. VETENSK.-AKAD. FÖRHx^NDLINGAR 1899, N:0 0. 549 



ßßßßß- Length of the base of the anal fin less tlian 43?^ 

 of the distance between the tip of the nose and 

 the beginning of the second dorsal fin. 

 1: Number of rays in the pectoral fins at most 



16. — Gobius avernensis. CSTR. 



2: Number of rays in the pectoral fins more than 



16. — Gohius paganellus, LiN. 



X'. Number of rays in the anal fin 10 — 12 (13); 



length of ventral fins usually less than 20 % 



of the length of the body, without caudal fin 



— var. capito (C, Val.) in cl. guttatus, lim- 



batus, geniporus + quadrivittaüis (Steind.). 



xx: Number of rays in the anal fin (13) 14 — 15, 



var. punctipinnis (CsTR.); length of ventral 



fins usually less than 21 % of the length of 



body. 



xxx: Number of rays in the anal fin 14 — 15, 



var. auratus (RiSSO) incl. cruentatus; length 



of ventral fins usually more than 21 % of 



the length of body, without caudal fin. 



h: Number of scales in a transverse line, between the beginning 



of the second dorsal fin and that of the anal fin, less than 14 



but more than 11; and in a longitudinal line, of the length of 



Yio of the length of the body (without caudal fin), above the 



foi-ß part of the anal fin, 5 or 6. — Gohius niger, LiN., incl. 



Gob. jozo, Lin. 



aa: Number of rays in the pectoral fins more than 16 — 



forma niger. 

 ßß: Number of rays in the pectoral fins less than 15 — forma 

 Bonelli (Nardo). 

 c: Number of scales in a transverse line, between the beginning of 

 the second dorsal and that of the anal fin, less than 11 — 

 Paraclioeturiclithys, Blkr. 



aa: Length of the head more than 24% of the length of the 

 body (without caudal fin); length of the head reduced more 



