LARVAL AND POST-LARVAL TELEOSTEANS. 345 



early post-larvae of 4-5 mm. bridge the gap between Ehrenbaum's 3 mm. 

 larva and Schmidt's* 5 mm. early post-larva. The general outline of the 

 fish (with the rounded profile of the head) resembles Schmidt's 5 mm, 

 specimen very closely. Pigment is slightly more pronounced, especially 

 over the abdominal surface, where large stellate chromatophores of a 

 rusty-brown colour are more closely packed on the dorsal part of this 

 region. Chromatophores also appear on the suborbital region. 



TABLE YII. 

 Record of Raniceps raninus L 



GADIDM. 

 Onos tnustekt L. 0. tricirratus Bl. 0. cimhrius L. 



I can only identify with certainty one post-larva 3-75 mm. in length 

 as 0. cimhrius. It was secured at the surface in haul 58 A, on 2nd August, 

 1913, 6 miles S.S.W. of the Eddystone rocks. It has the single typical 

 post-anal bar and the long black ventrals as described by Ehrenbaum,f 

 and lies between his Fig. f and Fig. g. Only two adult specimens have 

 come under my notice. One, 22-5 cm., was taken in a commercial 

 beam-trawl on the outer Eddystone Grounds in November, 1912 ; 

 the other, 15 cm., in a mosquito-net attached to the shackle of the 

 otter-board, 3| miles W.S.W. of Kame Head on 2nd September, 1913. 

 "These have the first ray of the first dorsal fin extremely elongated. 



Early post-larvse of 0. tricirratus were not observed, and only the 

 later stages, with the three barbels developed, could be identified with 

 accuracy. 



0. mustela occurred from March to September with an intensity in 

 June. The characters of these young stages are by no means obvious, 

 and it is just possible that a few may belong really to 0. tricirratus. The 

 real difficulty in identifying the rocklings at Plymouth will be overcome 

 when the early stages of 0. tricirratus are worked out more fully. 



* Medd. fra Komm. for Havund. Serie Fiskeri. Bind. II, Nr. 8. 1907. 

 t Nord. Plank. Vol. II, p. 280. 



