HiS'J DIATdMACKJ'.-- LKl'TOCYLINDRUK, LITMOIIKS.MIIJAI, MELOSIKA 



LEPTOCYLINDRUS DANICUS Cr, 



(Hih. K. Sv, Vi>l. Akad. Hand!. Vol. X.\ 3 n. 2 PI. U. lig. *, 5.) 



ISilS Majj: i") N. i;}'" W.; Faroes, very common; o«" N. 4° E., com- 

 mon; ()8 N. ;")- M, common. 

 June: Faroes, common. 

 Juhj : Faroes, rare. 



Auniist: 80°— 81° X. 1<>~ 2H E., rare, 

 ISilll May: Faroes, rare; H2" N. 2' E, common; 58° N. i' and 7' 

 K., common; oit N. 2 E., rare. 

 Srjiiriiibt'r: lir N. 17 E. to 7i)- N. ll*^ E. and 80 N. IH E., 

 varying from rare to common. 



Temperature: 7, mean of 20 obs., max. 11.?, min. 'd.s. 



Salinity: 84-.6-!, mean of 20 obs., max. 36.oi, min. 32.7o. 



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

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

 It is remarkable that it was found abundantly in October 189.5 off 

 Coriina and in .July at Trouville. Schroder mentions it from Naples. 



— -Vs. 



LITHODESMIUM UNDULATUM Ehb. 



(Van Hevrck Syn. PI. CXVI f. 8—11.) 



ISdS Orlobcr: i-2- N. 59' W. 



XiiCfinber: 43" N. 58- W. to 40- N. t)7- W. 



Temperatture: 11 to 18. 



Salinity: 33.oi to 33.42. 



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

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

 from Cameroons. — Xm. 



MELOSIRA (NUMMULOIDES VAR.) HYPERBOREA (Irun. 



(Van Heurck Syn. Pl. LXXXV fig. 4) 



ISSKt JuTh'-. 64° N. 7- W. 



July: 71"— 75° N. 17°— 18° W. 



