of the Fishery Board for Scotland. 208 
This formula shows that Station I. has a higher number of records than 
any others, and that the total number of records for the three outer 
stations is 155, while the total number for the three inner stations is 185, 
or fully 16 per cent. more than the outer. | 
Formula (2) shows the total number of records of young Crustacea for 
each of the twelve months, for (a) the three inner stations, I., III, and 
IV.; (0) the three outer stations, V., VIII, and IX.; and (c) for all the 
six stations :— 
Names of the Months, a 2 8 e eS Z Ee Sore eh 
Ses a See eo ae 
__. ((a) the Inner Stations, - 0 1 429 2214 27 30 16 2614 2 
Ee ees the Outer Stations, - 0 0 220 23 121729251310 4 
Month, for —_((¢) all the Six Stations. - 0 1 6 49 45 26 44 59 41 39 24 6 
Formula (3) shows the total number of the records of young Crustacea 
for each of the seven years, for (a) the inner stations, I., III, and IV.; 
(6) the outer stations, V., VIII., and IX.; and (c) for all the six 
stations :— 
Numbers of the Years, - - - - - 1889. 1890. 1891. 1892. 1898. 1894. 1895. 
(a) the Inner Stations, 19 32 38 38 38 Wl 24 
Tote Bamber of r De Onn Cae ee ene) RP EG ENT, 
Year, for (c) all the Six Stations, 36 60 64 55 59 2 46 
But besides young and larval Crustacea there are other immature forms 
mentioned in the lists of tow-net gatherings, and among them are occa- 
sional records of embryo and young Mollusca (including Gasteropoda, 
Lamellibranchiata, and Cephalopoda), young and larval Annelides, as well 
as plutei and other immature stages of star-fishes. 
Infusoria and microscopic alge are also described as being occasionally 
in greater or less abundance, but the records of these forms are few in 
number. 
There are occasional records of larval and post-larval fishes among the 
lists of tow-net gatherings, but they also are comparatively few. 
(6.) Pretacic FisH Ova. 
There are a considerable number of records of pelagic fish ova among 
the published lists of tow-net gatherings collected during the seven years. 
These records, which for the sake of clearness are arranged in tabular form 
similar to the other Tables, show that the total numbers for the inner and 
outer stations are in inverse ratio to the records of young Crustacea for 
the same stations, and this difference may probably be accounted for by 
the outer stations being nearer to the more important spawning grounds 
situated in the vicinity of the estuary. © 
[TaBLe. 
