18 PROCEEDINGS OF THE NATIONAL MUSEUM VOL, 125 
Caudal ramus (fig. 87) shorter than wide, its greatest dimensions 
being 22u x 30u when measured dorsally, 24u x 30u when measured 
ventrally. Outer lateral seta 75y long, pediceilate dorsal seta 28y, 
outermost distal seta 112u, innermost distal seta 203u, and the 2 
long median terminal setae 380 (outer) and 4954 (mner), both 
inserted between dorsal and ventral flaps as in previous species. 
All setae naked. 
Ratio of length of prosome to that of urosome 2.78:1. 
Keg sac (fig. 84) 462u x 187u, elongated, reaching far beyond ends 
of caudal rami, containing many eggs, each about 45y in diameter. 
Rostral area (fig. 88) broadty rounded posteroventrally. 
First antenna (410u long) similar to that of L. exilipes, the seg- 
ments 3ly (61y along anterior edge), 1334, 28u, 57u, 56y, 42u, and 32y 
in length respectively. Second antenna (fig. 89) with 4 segments 
having same formula for armature as in previous species. Three 
elements on third segment consisting of 2 naked setae 22u and 23y 
and a spiniform seta 11u long and very finely spinulose. Last segment 
74y along outer margin, 40u along inner margin, and 22y wide. Two 
terminal claws not as long as in 4 previous species and unequal, 
one being 46u and slender, other 434 and much stouter. 
Labrum as in L. exilipes. Mandible as in JL. jfissisetiger. Paragnath 
and first maxilla as in L. exilipes. Second maxilla (fig. 90) resembling 
in general form that of L. jissisetiger, but 4-5 central teeth on lash 
much stouter than others. Maxilliped much like that of L. gentilis. 
Area between maxillipeds and first pair of legs not protuberant, 
with a sclerotized line between bases of maxillipeds. 
Legs 1-4 segmented as in 4 previous species, with same spine and 
setal formula. Legs 1-3 closely resembling those of L. extlipes. Leg 4 
(fig. 91) with endopod shorter than exopod, its first segment 41u x 28yu 
(including terminal spinous processes) with inner distal finely barbed 
spine 30y, second segment 90u x 24p (greatest dimensions including 
processes), outer terminal spine 29u with finely barbed margins, 
inner 63u with coarsely barbed fringe on outer margin and very 
slightly barbed fringe on inner margin. Inner margin of this segment 
with very short spinules. 
Leg 5 (fig. 92) with elongated free segment having a prominent 
inner basal expansion directed distally. (Shape of this expansion 
varying somewhat in different individuals, as in figures 93 and 94.) 
Length of segment 1344, width at expansion 40y, width just distal 
to expansion 26u. Outer surface with narrow scalelike spines. Two 
terminal setae 70u and 88u (the latter with a narrow membrane as in 
L. fissisetiger). Seta on body near insertion of segment about 40p 
long and slightly plumose; a few small spinules near this seta. 
