434 Prof. M'Intosh's Notes from the 



sistant than those of the short-spined cottus, and have a 

 thinner capsule, which is minutely and somewhat regularly 

 punctured. They are probably deposited on stones, seaweeds, 

 and other structures. A male showed fully developed sperma- 

 tozoa at the end of J anuary . 



Bimaculated Sucker (Lepadogaster bimaculatus, Donov.) . 



The ova are somewhat irregularly arranged over an area of a 

 square inch or two inside the valves of dead specimens of bi valves, 

 such as Solen sih'qua, in July. The eggs do not touch, but are 

 firmly attached at somewhat regular distances to the smooth 

 surface. In one instance the eggs occurred (with the adult) 

 inside the hollow bulb of Laminaria bulbosa ; and as the em- 

 bryos were far advanced, it is probable, as Mr. Hyndman ob- 

 serves, that the adult remained in charge of them, even when 

 subjected to the rough treatment of the dredge.. In the latter 

 case, the eggs were less regularly arranged than on the smooth 

 inner surface of the Solen. The egg-capsules have very evident 

 punctures. 



Montagu's Sucker (Liparis Montagui, Donov.). 



Almost the only kind of ova procured by the local trawlers 

 (liners in their fishing-boats), in February, March, and April, 

 is that apparently of this species, attached to various zoophytes, 

 such as Hydralhnaniafalcata and Sertularia abietina (PI. XVI. 

 fig. 5) and on various algas. They are considerably smaller 

 than either of the species figured, measuring only yu inch in dia- 

 meter, and are remarkable for the almost ai - eolated appearance 

 caused by the conspicuous punctures. They are of a light 

 straw-colour and form firm masses on the zoophytes or algas, 

 while they are easily developed in the tanks, even after consider- 

 able exposure in the open air on the deck of a boat. Moreover, 

 the embryos are well developed, especially in regard to the 

 organs of circulation, pigment on the anterior region, pec- 

 toral fins and powers of locomotion, since on escape they at 

 once swim through the water. 



Pelagic Ova. 



During the experiments on behalf of H.M. Trawling Com- 

 mission many pelagic (or floating) eggs were examined. 

 Those familiar with such ova will hardly accept the view that 

 they float in virtue of the oil-globules they contain, since in 

 the common forms, e. g. cod, haddock, whiting, flounder, dab, 

 and turbot, no oil-globule is present. Masses of oil-globules, 

 indeed, are more characteristic of ova that lie on the bottom, 



