6 Mr. C. Cliiltun on a ntw Species of 



The loicer Up (Plate I. fig. 6) consists of two portions 

 almost completely separated ; I have never been able to 

 dissect out tlie two parts together. Each is subtriangular in 

 outline, the inner margin nearly straight, the outer strongly 

 curved and somewhat sinuous, the distal extremity being 

 acute. The distal half of the inner margin is fringed with 

 short setae which gradually increase in length distally, the 

 longest being placed at the extremity ; the outer margin is 

 free from setie. 



The first laaxilla is of the usual shape and consists of two 

 lobes, the outer longer than the inner, slender, narrowing 

 towards the extremity, and bearing at the end about ten broad 

 comb-like setai ; the inner lobe is only about half as long as 

 the outer, broadest at the base, bearing at its extremity four 

 or five long curved seta?, plumose towards the end, and also 

 two or three finer simple seta3. 



The second maxilla is also of the usual shape, consisting 

 of a broad basal portion bearing three subequal plates, the 

 inner forming a prolongation of the base, the outer two being 

 articulated to it. The two outer plates are similar and sub- 

 equal, oblong, each bearing at the end four long set®, the 

 three outer very finely pectinated on the inner margin, the 

 inner one shorter than the others and coarsely pectinated, the 

 pectinations being at right angles to the seta. The inner 

 plate bears at its extremity eight to ten setffi of various sizes, 

 some stout and pectinated, others fine ; there are also some 

 fine slender setas or hairs on the inner margin. 



The maxillipedes (Plate I. fig. 7) are well developed and 

 broad and appear to form a sort of operculum to protect the 

 mouth- parts. The basal joint [coxos) is short, transverse, 

 and bears the elliptical epipodite and the large basos. The 

 margin of the epipodite is quite free from sette and quite 

 entire except for a short distance towards the end on the outer 

 side, where it is finely crenate. The basos is very large and 

 forms much the largest part of the whole appendage ; its 

 inner margin is straight and it is produced distally into a tlat 

 plate nearly as large as the basos proper ; the extremity of 

 this plate bears numerous short pectinated setaj. On the inner 

 margin are four stout setse, slightly hooked or enlarged at 

 the end so as to fit into those on the other side and hold the 

 two halves of the maxillipedes together. The " palp " {endo- 

 podite) has the ischios short transverse, the meros is much 

 larger and expands distally, and has both margins, but espe- 

 cially the inner one, fringed with long seta-; tUn carpus is 



ucli broader than ion;:', the innir niar-iu rounded and 



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