50 "ENDEAVOUR" SCIENTIFIC RESULTS. 



less in profile, the apex of the finger being directed away 

 from the observer; the carpus and propod are somewhat 

 flattened, but are curved so it is difficult to get them in a 

 position to show their full width, but a fuli-face view as 

 given in Fig. 4 h shows that the propod, which is about as 

 long as the carpus, narrows distally, and that there is no 

 trace of a palm, the limb ending simply in the short, stout 

 curved finger. 



The second gnathopod (Fig. 4 i) is long and delicate and 

 has the characters usually found in the Lysianassidae. The 

 carpus is broadly oval, with its whole surface densely 

 covered with fine short setules, the propod is much smaller 

 than the carpus, oval in shape, with transverse rows of 

 setules on its anterior margin. It projects slightly so as to 

 form a minute chelate joint with the short finger. 



The first peraeopod (Fig. 4 j) is large and of extremely 

 peculiar appearance, forming a powerful subchelate organ. 

 The propod is immensely enlarged and is irregularly quad- 

 rate in shape, the postero-distal portion being produced 

 backwards into a lobe reaching nearly to the proximal end 

 of the merus, it narrows somewhat distally, the palm being 

 only half the distal width of the joint, defined by a stout 

 tooth, regularly convex and fringed with a row of very 

 short, stout teeth; the finger is short and stout, fitting 

 closely on to the palm.* 



The second peraeopod (Fig. 4 />) is normal, and has the 

 side plate produced backwards, along the lower margin of 

 the fifth side plate, into a moderately large lobe about as 

 broad as deep. 



The third peraeopod (Fig. 4 ?.) has the side plate very 

 large, deeper than broad, lobed below, the posterior portion 

 widely expanded, oval, anterior margin fringed with setules 

 arising from slight serrations, posterior margin with minute 

 crenulations. The merus is produced postero-distally into 

 a rounded lobe. 



The fourth (Fig. 4 m) and fifth (Fig. 4 n) peraeopods 

 are of similar shape, the fifth slightly larger than the 

 fourth, the basal joint narrower than in the third, and with 

 the posterior margin somewhat irregular in outline, slightly 

 concave towards the distal end and with minute crenula- 

 tions. The third pleon segment has the infero-posterior 

 angle quadrate, the angle itself being produced into a short 

 point. 



* In another specimen, subsequently examined, the palm projects 

 much more and the limb might he described as chelate. 



