CETOCHILUS. 
235 
“ for it gives a faint idea, to speak of numbers .... On 
looking into the water,” he continues, “ it was found to 
be quite obscured by the moving masses of Entomostraca, 
which rendered it impossible to see anything even a few 
inches below the surface. But if a clear spot is obtained, 
so as to allow the observer to get a view of the bottom, 
immense shoals of cod-fish are seen swimming lazily 
about, and devouring their minute prey in great quan- 
tities. Occasionally small shoals of herrings are seen, 
pursuing them with greater agility .... Great numbers 
of Cetacea often frequent the neighbourhood of the island 
at this time, droves of dolphins and porpoises swimming 
about with great activity ; and occasionally an immense 
rorqual may be seen, raising his enormous back at in- 
tervals from the water, and is to be observed coursing 
round and round the island.” 
On one of his visits to the Isle of May, he observed 
that at a considerable distance from the land, the sea had 
assumed a slightly red colour, and that this became 
deeper and deeper, the nearer he approached the island. 
The water too, he noticed, presented a very curious ap- 
pearance on the surface, as if a quantity of fine sand were 
constantly falling upon it. At first he thought this 
might proceed from light rain, but, upon more attentive 
examination, he found both the red hue of the water and 
the motion on its surface proceeded from an immense 
number of small Entomostraca. Some of these he col- 
lected, and found them to be a species of the genus 
Cetochilus. 
1 . Cetochilus septentrionalis. Tab. XXIX, fig. 1 a-g. 
Goodsir, Edin. New Phil. Journ., xxxv, 339, t. 6, f. 1-11. 
Baird, Trans. Berw. Nat. Club, ii, 156. 
Description , — This animal is about one and a half, or 
two lines long, of a bright red colour, and slightly trans- 
lucent. The thoracic and abdominal portions of the body 
are distinct, each portion being divided into six segments. 
