326 HISTORY OF BRITISH CRUSTACEA. 



others, which are fixed less deeply, and take up their abode 

 under the fins and such places, sucking the slimy juices of 

 the skin." The young have a large eye, and are furnished 

 with two large pairs of swimming-feet, and are nimble and 

 active, so that, as Dr. Baird says, " it is not the least curious 

 part of the history of these singular-looking animals that the 

 young should thus stand on a higher stage of development 

 than the mother." 



The first tribe is named Anchorastomacea, by Dr. Baird, 

 from the females being fixed to their prey by means of the 

 foot-jaws, which are strong and armed with hooks. There 

 is one pair of antennas ; the thoracic feet are nearly rudi- 

 mentary, or represented by large appendages. The males 

 are very small, free, and unattached, and totally unlike their 

 partners. 



. Fam. CHONBRACANTEIBJE, Baird. 



Foot -appendages large, cartilaginous, generally three 

 pairs; three pairs of foot-jaws. 



Gen. 182. CHONDRACANTHUS, Delaroc/ie. 

 This genus derives its name* from its appearing to be 



* Xovdpos, cartilage, and a.KavOa, a spine. 



