FROM THE NORTH SEA. 



~>7 



127 



One of these species, viz. Cristellaria rotulata Lamarck sp., was 

 also recorded as a recent form. 



An examination of the list of species at the different stations 

 reveals several noticeable features. Taking the three stations in 

 the Northern Area first, it will be seen that they vary greatly 

 in richness, Haul 767 yielding only 14 species, as against 26 in 

 Haul 770 and 54 in Haul 772. Even the richest haul in the 

 Northern Area contrasts badly with the poorest haul in the 

 Southern Area, which yielded 72 species, the other Southern 

 hauls yielding 79 and 94 species respectively. 



This discrepancy is largely explained by the abundant records 

 of the Family Lagenidae in the Southern Area. The figures are 

 very striking, fossils being disregarded : 



Total 



12 



44 



The abundance of Lagenidae in this Area off the Northumber- 

 land coast has already been noted by Brady.* But in the 

 " Huxley " dredgings only the genus Lagena is noticeably 

 abundant, the other genera of the family not being well 

 represented. 



The other families exhibit a similar discrepancy in the lists of 

 species recorded from the two Areas, but it is not so noticeable 

 as in the case of the Lagenidae. 



* Report British Association, 1862, p. 122; also Trans. Tyneside 

 Naturalists Field Club, 1863, vol v., part 4, p. 292; Ibid., 1864. vol. vi., 

 part 2, p. 194. 



