428 



Remarks. The present genus, established by A. Scott, is nearly allied 

 differing from it chiefly in the rudimentary condition of the 2nd to 

 4th pairs of legs. The genus Laoplwntina, recently established by Messrs. Nor- 

 man and Th. Scott, ought in my opinion to be combined with Pseudolaophonte, 

 the distinguishing characters recorded being apparently only of specific, not of 

 generic value. 



Pseudolaophonte spinosa (Thomps.). 



(Suppl. PI. 47). 



Laophonte spinosa, J. C. Thompson, Revised Report on the Gopepoda of Liverpool Eay. Trans. 



Liverpool Biol. Soc. Vol. VII, p. 198, PI. XXXIII. 



Syn. Pseudolaophonte aculeata, A. Scott. 



Specific Characters. Female. Body comparatively slender, cylindrical in 

 form, and very flexible, all the segments being sharply marked off from each 

 other and clothed at the hind edge with minute spinules. Cephalic segment rather 

 large, equalling in length the 3 succeeding segments combined, and, viewed dorsally, 

 of oval quadrangular form; rostral plate short and broad, transversely truncated 

 at the end, with a small conical prominence in the middle. Urosome shorter 

 than the anterior division, and having the lateral parts of the segments slightly 

 expanded and densely spinulose, each expansion terminating in a somewhat 

 stronger denticle; last segment smaller than the others and not expanded later- 

 ally, anal opercle armed in the middle with a sbort, thick spine. Caudal rami 

 about the length of the anal segment and slightly tapering distally, each armed 

 dorsally somewhat in front of the middle, with an upturned spiniform projection 

 accompanied by a delicate bristle, and at the inner distal corner with a similar 

 but longer curved spine, outer edge carrying about in the middle 2 thin bristles, 

 apical seta of moderate length and accompanied outside by a very short bristle. 

 Anterior antennae almost as long as the cephalic segment, and composed of 5 

 joints only, the 1st minutely serrate along the inner edge, and produced outside 

 near the base to a knob-like prominence divided at the end into a varying number 

 of denticles, 2nd joint a little shorter, fusiform, and produced outside in the middle 

 to a strong recurved claw-like process, 3rd joint of about the same length as the 

 2nd, but much narrower, 4th joint scarcely half as long, and carrying at the end the 

 usual sensory filament, 5th or last joint, representing the terminal part, about 

 the length of the 4th, and produced at the hind corner to a spiniform projection. 

 Posterior antennae with the distal joint about the length of the proximal one, but 

 much narrower and armed in the usual manner, outer ramus comparatively small, 

 with 4 thickish setse. Posterior maxillipeds very slender, with -the propodos sub- 



