CETOCHILUS. 
303 
Gen. 167. CETOCHILUS * Roussel cle Faux. 
Head furnished with two small., styliform prolongations. 
Antennules of two branches, of nearly equal size. Foot-jaws 
not branched. Thorax of six, abdomen of four, segments. 
Last pair of legs formed like the others. 
Dr. Baird gives the following account of the reason why 
the founder of the genus gave it the name:- — “Vauzeme 
w T as attached to a vessel employed in the whale fishery in 
the Southern Ocean, and for four months the crew w r ere en- 
gaged in the neighbourhood of Tristan d'Acunha, in the 
South Atlantic, without his ever having been able to observe 
w r hat formed the food of the whales. Leaving that quarter 
however at the end of that time, and steering for Cape 
Horn, he, one morning in the month of February, observed 
the surface of the sea streaked with red lines, several miles 
in extent, and giving the appearance of blood to the water. 
The experienced sailors on board immediately announced 
that they had now reached the pasture of the whales. Ac- 
cordingly they very soon afterwards saw them sporting about 
in the midst of these ruddy banks. Upon examining the 
water thus coloured, Yauzeme found it caused by an im- 
* From Krjros, a whale, and xtAos, food. 
