88 BULLETIN OF THE 



segment very much at the articulation of the terminal segment, which is about 

 twice and a half as long as broad, and ovate with the tip rounded. 



'the first maxilla is as in the last species except that the eiidognath 

 (PI. XIV. fig. 10) is expanded somewhat a little way from the base. 



The proximal of the four lobes of the protognath of the second maxilla 

 (PI. XIV. fig. 11) is larger than the next, while the three others increase suc- 

 cessively in size dintally, though the distal is not more than a third broader 

 than the one next it. The endognath is nearly as long as the distal lube of the 

 protognath, broadly expanded near the middle, where it is more than a third 

 as broad as long and has a rounded prominence edged with slender setae on the 

 inner margin, but suddenly contracted to a very slender tip armed distally with 

 four long setae on the inner edge and with two or three stouter and curved 

 setae on the outer edge just below these. The scaphognath is nearly as in the 

 last species except that the posterior part is a little narrower and not so strongly 

 incurved. 



The protopod and the branchial epipod of the first maxilliped (PI. XV. fig. 3) 

 are nearly as in the last species, but the endopod and exopod are very different. 

 The proximal segment of the endopod does not reach the tip of the protopod, 

 though it is between three and four times as long as broad, the inner edge is 

 armed distally with three or four slender spines and the rest of the way with 

 long setae or hairs ; the second segment is a little narrower than the first, 

 between a third and a half as long, abovit twice as long as broad, and margined 

 with hairs ; the terminal segment is considerably wider than the second seg- 

 ment, and about once and a half as long, approximately elliptical, and margined 

 all round with long setae or hairs. The exopod is a little longer than the endo- 

 pod, unsegmented, lamellar, very thin and of nearly uniform breadth through- 

 out, rounded at the tip, and with both edges setigerous, the setaj upon the outer 

 edge being long and plumose. 



The ischium of the second maxilliped (PI, XV. fig. 4) is very short ; the 

 merus is considerably longer than the carpus and propodus combined, half as 

 broad as long, and projects distally in a thin and broadly rounded lobe beyond 

 the articulation of the carpus ; the carpus is as long as the breadth of the 

 merus, less than half as broad as long, and somewhat narrowed proximally ; 

 the propodus is a little shorter than the carpus, but as broad, and is slightly 

 produced at the inner distal angle ; the dactylus is about two thirds as long as 

 the propodus, nearly half as broad as long, obtusely pointed, and armed with a 

 strong curved spine at the tip. The exopod is slender, reaches about to the 

 extremity of the carpus, and is distinctly multiarticulate from near the base to 

 the tip. The epipod is small, ovate, and bears a relatively large deiidro- 

 branchia. 



The external maxillipeds (PI. XV. fig. 5) reach nearly to the tips of the anten- 

 nal scales and are longer than either the first or second pair of legs : the ischium 

 is about a third of the entire length of the endopod, fully a third as broad as 

 long, and very slightly narrowed proximally ; the merus is as broad and about 

 two thirds as long as the ischium, and narrowed distally to the breadth of the 



