52 T. V. IIODORON. 



progressivclv incronso in leugth, the fornu-r luiviiig ii .sinuous posterior Itordor find 

 rounded laternl niiirgins, setose as the more anterior ones, the latter is curved slightly 

 backwards, the lateral margins curved and setose, and the posterior sinuous. 

 Intervals of varying width exist between the segments. 



The metasome consists of a single plate, the urosome, which is attaclied by about 

 one-third of its width ; it enlarges rapidly to its full width very little less than 

 that of the preceding segment ; it is broadly cordate in shape ; tlie antero-lateral 

 margins bear small setai, and are in part very finely and sparsely serrate. 



Three small teeth occur in front of the uropoda, which are of moderate size, 

 ventral in origin, and preterminal in position. They comprise a single-jointeil 

 protopodite with a small single-jointed e.xopodite and endopoditc. The former is 

 about two-thirds the length of the latter and much more slender ; each bears a tuft 

 of long seta) and a few along both margins. 



The first antenna consists of a peduucle of two joints, the first of which is stout, 

 the second longer and more slender ; the Hagellum is small, little longer than the 

 second joint of the peduucle. 



The second antennjB are destroyed in the specimen figureil, four joints of the 

 peduucle remain ; all are short, and the third of them carries externally a .spinous 

 appendage. In another smaller example the second antenna is complete and shows two 

 more joints, long and stout, the distal one longer than the proximal and a little more 

 slender ; both are covered, l)ut not thickly, with fine seta). The multi-articulate 

 Hagellum is about as long as the terminal joint of the peduncle ; it is well provided 

 on the inner side with .specialised seta) in small grouji-s. 



The mouth parts are quite normal as figured on Plate VIII. 



Of the pereiopoda the first is the shortest and a little the stoutest, the remainder 

 arc approxiniately sul)e(jual. They do not present any special features save that the 

 terminal claw is well developed and accompanied l)y an accessory which is very nearly 

 as large. 



The pleopoda. The first pair are opercular. 



Four specimens were obtained from the dredge material during Fel)ruary, 1902, 

 taken inside the 20-fathom line. The largest is 3 mm. long. 



COULMANNIA. 



Cephalosome narrower than any segment of the me.so.some except the last ; the 

 eyes are small and borne on elongated lateral peduncles. 



Second antenna with a six-jointed peduncle, no accessory appendage on the tliird 

 joint. 



Mesosome without any conspicuous division between anterior ami posterior portions. 



Epimera not distinct from mesosome, prolonged and deeply cleft. Segments 

 spinose in mid-dorsal line. 



