﻿250 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 102 



beyond the middle of the inner piece; the papilla seemingly closely 

 associated with the tissue of its inner basal portion. The three papil- 

 lary setae unequal and unlike (pi. 12, fig. 15), the shortest having an 

 accessory spine near its midline. The inner piece of the maxilla longer 

 than the extension of the outer piece, ending in a similar stout, slightly 

 curved spine. 



The second maxilla (pi. 12, fig, 9) of the long slender form charac- 

 teristic of the genus, tipped with two slender, unequal claws with 

 marginal hyaline flanges, the posterior about half the length of the 

 other. The claw of the maxilliped (pi. 12, fig. 10) slender, about half 

 the length of the basal segment, bearing a stalked seta on its posterior 

 side. The accessory process just posterior to the base of the maxilliped 

 (pi. 12, fig. 11) a very broad, stout, chitinous spine, irregularly 

 triangular, with the distal point somewhat attenuated. (The basal 

 part of this spine is probably a bar corresponding to that found in 

 the other species, but the main body is so strongly chitinized that any 

 division between the two is obscured.) 



Chitin rod between legs 1 and 2 narrow, curved backward, each 

 side armed with a stout upwardly directed spine. Form of leg 1 as 

 shown in plate 15, figure 14 ; endopod reaching to distal third of basal 

 exopod segment ; terminal exopod segment with the upper two spines 

 stout and dentate on both margins, the modified inner spine and ac- 

 companying seta as shown in plate 12, figure 16. 



Basal segment of leg 2 armed inside with a plumose seta and a 

 triangular lamina. Exopod (pi. 12, fig. 18) with outer spine of first 

 segment reaching to distal end of third ; spine of third segment with 

 smooth margins, reaching considerably beyond distal edge of seg- 

 ment; second spine about one-third the length of the first, smooth 

 and slightly curved. Laminae on outer margins of endopod segments 

 1 and 2 similar to those shown in plate 15, figure 12, except that the 

 edges are more rounded. (There is no lamina on the inner edge of 

 the second segment as stated by C. B. Wilson, 1935a. As is usual, 

 the margin of the segment is extended beyond the point of attachment 

 of the succeeding segment, and bears two long setae at the distal 

 terminus of the extension. ) The third segment rounded and very short, 

 bearing six setae. 



The exopod of leg 3 having the basal segment as long as the two 

 succeeding segments, the outer spines of segments 1 and 2 smooth, 

 slender, and scarcely longer than the following segment. The inner 

 setae not so long as those of leg 2. Segment 3 (pi. 12, fig. 14) with 

 three outer unequal spines. The laminae of the outer margins of the 

 endopod attached as shown in plate 12, figure 17; that of segment 1 

 very large and overlying the first two segments of the exopod. The 

 inner margin of segment 2 expanded as in leg 2. 



