400 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [5G'] 



crease successively in size distally, tbongh the distal is not more than 

 a third broader than the one next it. The endoguath is nearly as long 

 as the distal lobe of the protoguath, broadly expanded near the middle, 

 where it is more than a third as broad as long, and has a rounded prom- 

 inence edged with slender setre on the inner margin, but suddenly con- 

 tracted 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 Benthos- 

 cetes Bartlettij except that the posterior part is a little narrower, and 

 not so strongly incurved. 



The protopod and branchial epipod of the maxilliped are nearly as in 

 Benthcecefes BartJetti, but the endopod and exopod are very different. 

 The proximal segment of the endopod does not reach the tip of the pro- 

 topod, 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, about twice 

 as long as broad, and margined with hairs ; the terminal segment is 

 considerably wider than the second segment, 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 endopod, unsegmented, 

 lamellar, very thin and of nearly uniform breadth throughout, rounded 

 at the tip, and with both edges setigerous, the setae upon the outer 

 edge being long and plumose. 



The ischium of the first gnathopod is very short ; the merus is con- 

 siderably 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 to about the extremity of the carpus, and is 

 distinctly multiartieulate from near the base to the tip. The epipod is 

 small, ovate, and bears a relatively large dendrobranchia. 



The second gnathopods reach nearly to the tips of the antennal scales 

 and are longer than either the first or second peraeopods: 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 dis- 

 tally to the breadth of the carpus ; the carpus is slightly shorter than 

 the merus, and only about a third as wide ; the propodus is about as 

 long as the carpus, but a little narrower; the dactylus itself is a little 

 broader than the propodus, but less than half as long, broadest at the 

 middle aud with the tip triangular and armed with a slender spine not 



