428 PKOCEEDIXGS OF THE NATIONAL, MUSEUM vol.83 



of the carapace. A similar projection occurs also on the second 

 thoracic somite. These projections, especially the first, are of 

 considerable length. 



The antennule (fig. 35, d, e) is slender. The first article of the 

 peduncle is somewhat longer than either of the other two, which are 

 subequal. The accessory flagellum is, as usual, very small. 



The terminal joint of the first maxilliped (fig. 35, /) is very tiny. 

 The basis of the second maxilliped (fig. 35, g^ A), ventrall}^ near the 

 distal end projects as an angular dentiform edge, which, however, 

 does not carry over to the outer margin. It probably represents the 

 line of fusion between the basis and ischium. The outer margin 

 shows a few low denticles near its end. On the outer margin of the 

 merus there are a few similar denticles. The carpus has a strong 

 tooth on its inner margin, and anteriorly a somewhat weaker tooth 

 on the ventral side. The anterior margin of the propodus has two 

 small teeth below and two bristles above. At the distal end of the 

 outer margin there is a long powerful spine of peculiar structure. 

 At first it diminishes gradually toward the tip, and then near its 

 extremity undergoes a sudden contraction on the inner side, so that 

 the spine distally forms a fine bristlelike structure that surpasses the 

 terminal spines of the dactyl. At the end of the dactyl are four 

 strong spines, a shorter one externally, with three longer ones on the 

 inner side; of these the middle spine stands somewhat out of the line 

 of the series, a little more toward the dorsal side than the others. 



The basis, ischium, and merus of the third maxilliped (fig. 35, i) 

 are broad ; the following joints are slenderer. The basis is noticeably 

 shorter than the distal portion of the limb. The inner margin of the 

 merus is practically straight. The distal half of this inner margin 

 is furnished with a row of low denticles. The outer edge likewise 

 carries a few denticles in its distal portion. The carpus has a row of 

 denticles on the inner margin and two small denticles on the outer. 

 The propodus exhibits denticles only on the inner margin, while the 

 dactyl is devoid of them. 



The basis of the first pereiopod (fig. 35, j) is shorter than the 

 distal part of the limb. The carpus and the propodus are of nearly 

 equal length and longer than the dactyl. None of the joints has 

 marginal denticles. 



Of the last three joints of the second pereiopod (fig. 35, h, Z), the 

 carpus is scarcely shorter than the dactyl, while the propodus, as 

 iisual, is short, only about half the length of either of the other two 

 joints. The dactyl is peculiar in not diminishing toward its end, 

 indeed widening out somewhat instead. The distal extremity is 

 rounded off and is without terminal bristles. A few bristles, how- 

 ever, do occur just before the end of the joint on its inner margin. 



