12 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 125 
ventral (with marginal row of spinules) flaps, and both with strong 
coarse lateral spinules in midregion (these spinules much stronger 
than in L. exilipes). 
Ratio of length of prosome to that of urosome 2.5:1. 
Most ovigerous females observed carrying only clusters of eggs 
as in figure 56. One of few intact egg sacs measuring 462y x 198u, 
elongated oval, reaching far beyond caudal rami, with each egg about 
44u in diameter. 
Rostral area and first antenna (4534 long) resembling those of 
L. exilipes. Second antenna (fig. 59) formed in general like that of 
L. exilipes, but 3 elements on third segment 35yu, 24u, and 25u from 
proximal to distal. Last segment 130 along its outer edge, 83y 
along its inner edge, and 31lu wide. Two terminal claws different 
in form and length, one being slender and 143y along its axis, other 
stout and 1274. (Apparently some variation in lengths of claws, 
with one female 153u and 117u on one side and 146y and 130y on 
other. In one female from Stereonephthya acaulis 120u and 99u, 
and in another 1254 and 107. In all cases, however, longer claw 
slender, shorter one stout.) 
Labrum as in L. eailipes. Mandible (fig. 60) without blunt process 
on convex margin of basal region as in L. exilipes. Paragnath, first 
maxilla, and second maxilla similar to those in L. evxilipes. Maxilliped 
(fig. 61) differing only slightly from that species. 
Area between maxillipeds and first pair of legs not protuberant, 
with a sclerotized line connecting bases of maxillipeds. 
Legs 1-4 segmented as in 2 previous species, with same spine and 
setal formula. Inner seta on coxa of leg 4 short (10) and naked. 
Inner margin of basis of leg 4 without hairs. In leg 1 (fig. 62) and 
leg 2 spinules along proximal margins of outer spines of exopod longer 
and stouter than those on distal margins. Endopod of leg 4 (fig. 63) 
shorter than exopod. First segment 55 x 34y (including terminal 
spinous processes), bearing an inner distal finely barbed spine 354 
long. Second segment 994 x 34u (greatest dimensions including 
processes), bearing 2 terminal spines, outer 44u and finely barbed, 
inner 79 with lateral spinules; a row of long hairs along proximal 
two-thirds of inner margin of segment. 
Leg 5 (fig. 64) with elongated free segment, 1434 x 20u (width 
taken at level of proximal inner expansion). Outer convex surface 
with pointed scales. Two terminal naked setae 99u and 148y in length. 
Seta on body near insertion of free segment 40u long and slightly — 
plumose; a few small spinules near this seta. | 
Leg 6 probably represented by the 2 setae near areas of attachment — 
of each egg sac (see fig. 58). | 
Color in life in transmitted light as in 2 previous species. 
