O. G. Dely szerk.: Vertebrata Hungarica 2/1-2. (Budapest, 1960)
Berinkey, L.: Ichtyological notes 1 11-18. o.
The species favour cold waters, rich in oxygen. They are to be found in Northern Europe and the environs of the Alps, with a special form in almost every lake. The locality datum of the Hungarian specimen are: Vác, Danube, 21 June 1960, leg. J. MATKOVICS, inventory Nr. 60.144.1. It is characteristical of the subspecies Coregonus la- varetus maraena /BLOCH/ that the number of its branchial spines lies between 29-34, it has a large body, reaching a length of 1 m and a weight ef seme 10 kg. The standard length of the specimen examined by me is 16,4 cm, the number of the scales of its lateral line 91, that of the rays of the dorsal fin III. 10, of the anal fin III. 12. It has 29 branchial spines. Its body is elongated, flattened laterally, its greatest height is 24,8 % of the standard length /all further values are given in percents of the standard length/, its greatest width 8,4 %. Its head is rather small, its length 21.3 5t, its breadth 10,2 % t its height 14,3 %. The upper jaw extends eomewhat over the lower one, reaching backwards to the line of the anterior margin of the eyes. The eye is rather big, its diameter ie 25,7 % of the length of the head /the measurements of the parte of the head are given in percents of the length of the head/. The preorbltal distance is 29,7 %, the postorbital one 48,5 %, the interorbital one 28,5 %. The dorsal fin is short and high; its base 11,1 %, its height 20,0 %; it commences before the middle of the body; the predorsal distance is 46 %. The ventral fin begins somewhat before the end of the dorsal one, Its length is 14.4 %, the preventral distance 48,5 %. The adipose fin is situated a bit before the end of the anal fin. The anal fin is short and low, its base 10,8 %, its height 12,8 %. The caudal peduncle is short, its length 15,8 %, its smallest height 8,10 %. The caudal fin is rather long and strongly incised. The scales are minute. The lateral line is complete .stretching from the head to the caudal fin in an almost straight line. There is an edge covered by scales, running
