4 Dr. C. Chilton on a neio 



The second perceopod {fig. prp.2) similar to the first, but 

 rather longer, having the carpus produced posteriorly into a 

 rounded lobe, which bears about six long feathered setas 

 reaching beyond the end of the dactylos. 



The third penpopod [prp. 3) has the basos widening dis- 

 tally and at the widest part as broad as long, anterior border 

 with small tufts of short spiniform seta;; the raeros broad, 

 produced posteriorly, both margins with tufts of spiniform 

 setre ; carpus half as long again as tlie meros and about as 

 broad, similarly supplied with spiniform setse ; propodos 

 about two thirds the lengtli of the carpus, but much narrower, 

 with one tuft of spiniform setas on each margin and others at 

 the end ; dactylos straight and styliform, about two thirds as 

 long as the propodos. 



The fourth percjtopod does not differ in any important 

 character from the third. 



The fifth perceopod (fig. prp. 5) is considerably broader 

 and somewhat shorter than the third ; the basos is much 

 broader than long, the ischium large and broad, its breadth 

 being more than half the greatest breadth of the basos ; meros 

 broad, oblong, only slightly narrowed at base, anterior 

 margin with seta; at the end only, posterior margin with four 

 or five slender setaj, and towards the distal end two or three 

 short spines ; carpus as broad as the meros, narrowed at 

 base, anterior margin with two transverse rows of spines and 

 one row at the end ; posterior margin with one row at the 

 middle and another at the end ; propodos about as long as 

 the carpus but only half the width, with a tuft of spines about 

 the middle of eacli margin and others at the end ; dactylos 

 straight, styliform. 



'ihe first uropod (fig. ur.l) has the peduncle longer than 

 the rami, with two strong spines at the distal end, otherwise 

 nearly free from setge ; outer ramus slightly longer than the 

 inner, with a tuft of lour or five stout seta at the end, sides 

 parallel and free from setie ; iinier ramus with a similar 

 tutt of setai at tlie end and one seta a little removed from the 

 end. 



The second uropod (fig. ur. 2) has the peduncle stout, as 

 long as the outer ramus, with tiiree seta; in serrations on the 

 upper margin ; outer ramus considerably longer than the 

 inner, both witii tults of stta; at the ends and the outer one 

 with an additional seta on the upper margin. 



The third uropod (fig. ur. '6) has the peduncle much 

 shorter than the rami, bearing a few setai, and at the end one 

 leathered seta reaching to the end of the rami ; outer ramus 

 slightly longer than the inner, with the distal third marked 



