CETOCHILUS. 303 



Gen. 167. CETOCHILUS/ Roussel de Vaux. 



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 

 was attached to a vessel employed in the whale fishery in 

 the Southern Ocean, and for four months the crew were en- 

 gaged in the neighbourhood of Tristan d'Acunha, in the 

 South Atlantic, without his ever having been able to observe 

 what 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 ktjtos, a whale, and x i ^ os > ^ood. 



