SEA-FISHERIES LABORATORY. 143 



Tetragoniceps differs somewhat from the generic des- 

 cription given in the Monograph of the British Copepoda, 

 especially in the number of joints in the outer branches 

 of the first pair of feet and in the inner branches of the 

 second, third and fourth feet, but as the mouth organs 

 have not been satisfactorily worked out, it is perhaps 

 better meanwhile to place it under the genus Tetragoniceps 

 its nearest ally rather than institute a new genus for its 

 reception. 



Tetragoniceps consimilis, T. Scott. 



[T. Scott, Twelfth An. Eep. Fish. Board for Scot., pt. 

 III., p. 244, 1894.] 



A few specimens of this species were obtained from the 

 material dredged 1 mile off Spanish Head, Isle of Man, 

 from a depth of 16 fathoms, it closely resembles Tetra- 

 goniceps braclyi in general appearance as well as in a few 

 structural details, but differs from it in the absence of the 

 strong hook on the second joint of the antennules, in the 

 inner branches of the first pair of feet being three-jointed 

 and in the fifth pair being composed of two distinct 

 branches. 



Laophonte propinqua, T. and A. Scott. 



[T. & A. Scott, An. & Mag. Nat. Hist., Ser. 6, Vol. 

 XV., p. 460, 1895.] 



A few specimens of this species were obtained from 

 material washed from sponges collected by Dr. Hanitsch 

 at Port Erin, Isle of Man, in August, 1894; it is not 

 unlike Laophonte denticornis at first sight but on closer 

 examination is found to differ very markedly, not only 

 from that species, but from any of the other known 

 members of the genus. 



Laoplionte intermedia, T. Scott. 



[T. Scott, Thirteenth An. Eep. Fish. Board for Scot., 

 pt. III., p. 168, 1895.. 



