NO. 3661 COPEPODS—-HUMES AND HO 13 
Matz.—Body (fig. 65) resembling that of female in general aspect. 
Length 0.72 mm (0.69-0.77 mm) and greatest width 0.34 mm (0.32- 
0.36 mm), based on 10 specimens. Ratio of length to width of prosome 
1.36:1. 
Segment of leg 5 measuring 39 x 104u. Genital segment (fig. 66) 
as long as wide, 200u x 203y. No ventral intersegmental sclerite 
between these segments. Four postgenital segments 15u x 61y, 17 x 
57, 12u x 56y, and 22u x 58y respectively. 
Caudal ramus as in female, but proportions slightly different, 
20u X 24u dorsally, 27p x 24y ventrally. As in L. exilipes, outermost 
terminal seta with inner spinules proximally and innermost terminal 
seta with row of spinules on both sides. 
Ratio of length of prosome to that of urosome 1.7:1. 
Rostral area as in female. First antenna similar to that of female, 
but with 3 aesthetes added (length of proximalmost=130y) so that 
formula is same as for males of 2 previous species. Second antenna, 
labrum, mandible, paragnath, first maxilla, and second maxilla like 
those of female. Maxilliped (fig. 67) with general form similar to 
L. exilipes, but ornamentation of major setae slightly different. Claw 
slender and 172y along its axis. 
Area between maxillipeds and first pair of legs as in female. 
Legs 1-4 segmented as in 2 previous species, with spine and setal 
formula as in males of those species. Endopod of leg 1 (fig. 68) only 
slightly geniculate. Third segment moderately elongated, with outer 
terminal spine straight, having lateral spinules and small hyaline 
tip, inner terminal spine slightly bent (not as strongly so as in L. 
extlipes) with moderately strong spinules along its inner distal edge; 
spinous process between these 2 spines as in L. exilipes. No obvious 
sexual dimorphism in legs 2-4, except that endopod of leg 4 (fig. 69) 
has slightly different proportions: first segment 33 x 25u, with spine 
25u, second segment 70u x 22u (more elongated than in female, ratio 
3.2:1 instead of 2.9:1 as in that sex), with 2 terminal spines 3ly and 
6l1y. 
Leg 5 (fig. 66) with elongated free segment, 574 x 11y, without 
pronounced proximal inner expansion, bearing on its outer surface a 
few scales and terminally an outer naked seta 71y and an inner barbed 
spine 19. No spinules on body near insertion of free segment. 
Leg 6 similar to those in 2 previous species, with 2 naked setae 
50 and 82y in length. 
Spermatophore, attached to female, as in L. ezilipes. 
Color in life as in 2 previous species. 
Erymotocy.—The specific name gentilis, from Latin=belonging 
to the same gens or clan, alludes to the close relationship of this 
species with L. exilipes. 
