62 



during tliese months. On the otlier haud we got some at the eud of April wheu 

 we were iii the Skager Rak (see Tab. 1). 



The pelagic young of the pogge ave thus found in the Danish wafers in the 

 months January — May and a feiv strugglers in June. They ave talcen in all the 

 Danish tvaters, but not in the Skager Rak in the first months of the year. 



The bottom-stages of the pogge have only been observed a few times. 



D. 30 — 6 — 98. At Frederikshavn, 6 fm. (northern Kattegat). One Agonus, 22 mm. 

 was taken. 



D. 4 — 8 — 99. Esbjerg Deep, '/■> — IV2 fm. (North Sea), 1 Acjonxis, 43 mm. (measured in 

 the preserved condition) was taken with 8ome small specimens of the common Cottus. 



Specimens of 6 — 8 cm. have often beeu taken iu the Danish waters in 

 the spring and summer, they belong probably to the I group. 



Orested Bleiiny, Carelophus ascanii. 



The pehxgic young of Carelophus were first noted iu the Danish waters in 

 the spring of 1902. They were takeu in Fænø Sound in the period from the 

 23rd to 25th of March to the number of 16 specimens in all. 



In 1903 A. C. Johansen took a pelagic young of Carelophus in the Katte- 

 gat on March 12th. Ehrenbaum and Strodtmann found two in the western Baltic 

 on the 16th and 17th of February 1903, the one however on the boundary to the 

 true Baltic (Germau station V). 



In 1904 A. C. Johansen took 4 specimens in the Skager Rak on March 

 7th and 7 in the Kattegat between February 16th and March 23rd. 



Pelagic young of Carelophus have thus in small number been noted from the 

 western Baltic, Little Belt, Kattegat and Skager Eak in the months of February 

 and March. 



Neither the bottom-stages nor older stages of Carelophus have anywhere 

 been fouud in Danish waters. 



Lumpenus lampetriformis. 



Investigation of the spawning-period of Lumpenus was begun in 1902. 



D. 15—5—02. W. S. W. from Lyø*, 19—20 fm. (western Baltic). Young-flsh trawl on 

 Ijottom, lOminutes: over IQOQ Luiiipenus of O group and many older specimens of the same species. 



The specimens takeu were measured. The resultiug Table of measurements 

 is given on page 65. It was inscribed in tlie journal by Johs. Schmidt, who has 

 also added the note that all the specimens were uuripe. 



In the middle of May therefore, there was nothing to indicate proximity 

 to the spawning period. Further investigations were therefore postponed to the 

 autumn : 



D. 24—11—02. W. S. W. from Lyø, 19—20 fra., soft liottom. Young-fish trawl on 

 bottom: 100 Lumpenus, the larger of whieh, 6—7 indies long (c. I6.5— 18 cm.) had yellowish 

 white, yet unripe spawn. 



* exact bearings; soutli end of Bjorno to south end of Lyø, Horne Church weU clear 

 of the north end of Lyø. 



