of the Fishery Board for Scotland. 
335 
the eggs of the dragonet. Amongst the young lishes the presence of 
bimaculated suckers is noteworthy, as also is the young conger {Lejpto- 
rephalus). The former, however, are found in the collections from the 
Moray Firth, and in previous years similar young congers have been 
procured in St Andrews Bay. They are, nevertheless, rare on the east 
coast, and probably come from deep water offshore. In regard to the 
arrangement of pigment and other points, these agree with the so-called 
HelmichtJiys of the Mediterranean, some of the latter, however, having a 
shorter snout. 
In a general description like the present the proportion of the ova may 
be indicated by the teeth of Ross's eye-piece micrometer. Thus the eggs 
of the long rough dab cover about 24 of these spaces, or in spirit from 
21 to 22 ; those of the plaice from 18 to 21*5. The brill and the gurnard, 
both with oil- globules, then follow, the former covering in spirit from 
16 to 16*5 notches, the latter in spirit from 16 to 17. The lemon-dab 
when fresh occupies 16 '5, and in spirit 15 '5 spaces. AVhen fresh the 
pollack covers 14. 
It is probable that the eggs of the pollack, as well as those of the green 
cod, occur in the collections, the former, according to Mr Holt, who has 
had an opportunity of observing them off the west coast of Ireland, being 
about the size of those of the cod. 
Certain kinds of eggs characterise the early part of the season, which 
begins, generally speaking, in January, while others are only found con- 
siderably later. Fishes that externally resemble each other, moreover, 
may have widely separated spawning periods. This is seen, for instance, 
in the bib and the poorcod (which Mobius and Heincke regard as 
varieties of one species), the former spawning early in the year, the latter 
•in summer on the eastern shores. 
I. Clyde. 
July 2, 1890. Eggs of sprat. Eggs of witch {P. cynoglosms). Eggs 
of Motella-WkQ form. Egg of dragonet, young dragonets. 
MooNiN Bay. — 21st June 1890. Egg of gurnard. Eggs of turbot. 
Ova of dragonet, two sizes. 
'Ovum of Fish, Lochindal, 27th June 1890,' ova of gurnard. 
Station XII. — 2nd July 1890. Ova of gurnard. Ovum of dragonet, 
unknown small egg, "0255 in. C?) ; eggs of rockling. 
Station IL — 3rd July 1890. Surface. Ovum of gurnard (some- 
what less than usual). Ova of rockling with advanced embryo. Ova 
of sprat in early stage. Eggs of mullet-like species, advanced, -0345 in. 
Station VI. — 4th July 1890. Surface. Eggs of sprat, dragonet, 
rockling, two kinds ('0225 to "0255 in.). 
Station I. — 4th July. Surface. Eggs of gurnard as before. Eggs 
of variegated sole {Solea variegata), -039 in. Eggs of dab, flounder, 
rockling, two sizes as before, unknown small egg, '0255 in. Eggs of 
dragonet and turbot. 
Station X. — 4th July 1890. Surface. Egg of gurnard, rockling, 
two sizes as before. Many eggs of turbot in a granular condition. Eggs, 
•0264 to '0279 in., near those of dab. 
Station VII. — 10th July 1890. Surface. Large number of eggs 
with oil-globule, -0375 to ^042 in., near ling ; oil-globule, '033 and 
•036 in. Egg of dragonet. 
Ibid. Bottom. Two young gobies, 4 to 5 mm. 
Station VIII. — 10th July 1890. Bottom. Considerable number 
of eggs of turbot. 
Station VIII.— 10th July 1890. Surface. Eggs with oil-globule, 
