HH2 DlATO.MACE^ LEI'TOCYLINDRUS, LITHODK.^MIUM, MELOl^lRA 



LEPTOCYLINDRUS DANICUS Cl. 



iiiih. K. Sv. Vet. Akad. Ilandl. Vol. XX 3 n. 2 PI. II. lig. 4 o.) 



1898 Mai/: 45" N. i-B"^ W.; Faroes, very common; 58" N. 4" E., com- 



mon; 63"^ N. 5'' E., common. 

 June: Faroe.s, common. 

 Jii/ij : Faroes, rare. 

 AaljKst: 80°— 81° N. 10"— 28^ E., rare, 



1899 May: Faroes, rare; 62° N. 2° E, common; 58° N. 4° and 7° 



E., common; 59° N. 2° E., rare. 

 Septrinber: 75° N. 17° E. to 79° N. 11" E. and 80' M. 13 E., 

 vaiyin.i,^ from rare to common. 



Temperature: 7, mean of 20 obs., max. 11. 7, min. 3..!. 



Salinity: 34.t;i, mean of 20 obs., max. 30. 01, min. 32. 70. 



Plankton-type. This species seems to have a station at the Faroes, 

 whence it spreads across the North Sea to Norway and Skagerak. 

 It is remarkable that it was found abundantly in October 1895 off 

 Coruiia and in July at Trouville. Sc.hrodki^ mentions it from Naples, 

 — .V.s. 



LITHODESMIUM UNDULATUM Eub. 



(Van Hki hck Syn. 1^1. GXVl f. 8—11.) 



1898 OviohiT: 42" N. 59" W. 



Xovcinbrr: 43° N. 58° W. to 40^ N. (57" W. 



Temperature: 11 to 18. 



Salinity: 33..)i to 33. 42. 



Plankton-type. Noted from the coasts of France, the Engl. 

 (Ihauiiel and the southern North Sea. 1 have seen some specimens 

 from (^ameroons. — Xtn. 



MELOSIRA (NUMMULOIDES VAR.) HYPERBOREA (iuux. 



(V.w IlKi Hc.K Syn. PI. LXXXV lig. 4.-) 



1S99 Jntii': H4° N. 7° W. 



.//////: 71'"— 75° N. 17°— 18- W. 



