36 BRITISH COPEPODA. 



tail setaB ai*e a good deal swollen at the base (fig. 14). 

 Ovisac curvate, containing a small number of large 

 ova ranged in a single layer. Length -g^th of an 

 inch ( % 85 mm.). 



Hob. Dredged in depths varying from ten to 

 thirty-five fathoms, off Marsden on the Durham Coast, 

 off Red Cliff, Staiths, and Robin Hood's Bay (York- 

 shire) ; off Call urn's Hole, Bute ; Glen Sannox, Arran ; 

 St. Mary's, Scilly ; and Clew Bay, Ireland. 



This agrees very closely with the somewhat scanty 

 details of character noted by Dr. Claus for Oantho- 

 camptus restrains, but if that species really belongs to 

 the genus Canthocamptus as defined by Dr. Claus 

 (having the fourth foot only 2- jointed), it cannot be 

 the same as the form now under consideration. With 

 this uncertainty I retain my own specific name, 

 though, if the two forms are really identical, the 

 term rostrata should have the preference on account 

 of priority. 



Genus 10. AMEIKA, Boeck (1864). 



Anterior antenna 8-jointed; inner branch of posterior 

 antenna small, 1 -jointed. Mandible-palp small, 1- 

 or 2-branched. Branches of all the swimming-feet 

 3-jointed ; outer branch of the first pair short ; 

 inner branch long, the first joint especially much 

 elongated. 



