254 U.S. NATIONAL MUSEUM BULLETIN 23 6 



times as long as wide, twice as long as 2nd segment, with 2 geniculate 

 setae and 1 fine seta. 



The details of legs 2 to 4 appear from figm^es 1016-6? and the 

 setal formula: 



Leg 3 (fig. 101c) with short endopodite, reaching slightly beyond 

 jointing of exopodal segments 2 and 3. Endopodite of legs 2 and 4 

 longer, apex reaching middle of 3rd exopodal segment. 



Exopodite of leg 5, 1% times as long as broad, more or less cordate, 

 but attached to baso-endopodite by means of broad strip, with total 

 of 5 setae, one of which is lengthened. Baso-endopodite squarish, 

 slightly shorter than exopodite, with 4 setae, one of which is lengthened 

 (fig. lOle). 



Color completely faded, transparently yellowish. 



Adult male (loc. 590), total length 0.33 mm.; length of longest furcal 

 seta 0.30 mm. The specimen could not be figured dorsally because of 

 strongly curved body. 



General shape of body slenderer than in female, particularly cepha- 

 lothorax, with the result that demarcation between cephalothoracic 

 and abdominal parts of body is obscured. Head and 1st thoracic 

 somite fused to form cephalic somite, which is as long as combined 

 lengths of thoracic somites 2 to 4. Line of back very moderately 

 curved, rostrum as small as in female, ji length of 1st antennular seg- 

 ment. Sides of cephalic somite scarcely produced, oral field conically 

 protruding (fig. 100c). 



Abdomen with 1st and 2nd segments separate, somites 1 to 4 and 

 anal somite have about same length. 1st abdominal somite with 

 dorsolateral spinules; 2nd to 4th somites with dorsolateral and 

 ventrolateral spinules; anal operculum nude, internal furcal margin 

 haired. 



Setation of furca as in female; setae 2 and 3 not swollen basally. 



Antennules haplocerate, hinge developed between 5th and 6th 

 segments. 2nd segment long, 4rd segment swollen, big, with small 

 conical process carrying aesthetasc and 2 setae. Apical segment 

 small, indistinctly separated from penultimate segment. Setation 

 represented in figure 102^. 



Antenna with basis and endopodite separate, exopodite small, 

 unsegmented, with 3 setae and a spine. Endopodite with 7 apical 

 appendages and some spinules (fig. 101 g). 



Leg 1 (fig. 102a) with strong internal spine at basis, externally with 

 seta. Exopodites and endopodites 3-segmented. Exopodal segments 



