EXPLANATION OF PLATE XLIX* 

 * Iphimedia discreta, sp. uov. 



n.s. — Line indicating natural size of the specimen figured below. 



Pl.s. S. — Posterior lateral margin of third pltjon segment. 



a.s. — First two joints of first antenna. 



m.m. — Mandibles, third joint of palp on the right of the plate 

 missing. 



l.i., mx. 1, mx. 2, mxp. — Lower lip, first and second maxillae, 

 maxillipeds. 



gn. l,gn. 2, jyrp. 2. — First and second gnathopods, and part of 

 second peraeopod. 



urp. 1, 2, 3, T. — First, second, and third uropods, and telson. 

 In connection with urp. 3, broken lines are given to indi- 

 cate that one ramus is missing. 

 The mouth-organs are figured on a uniform scale, higher than 



that (which is also uniform) for the other details. 



f^ 



