NO. 3661 COPEPODS—HUMES AND HO 7 
Spermatophore (fig. 31), attached to female, elongated, 172y x 78u 
without neck. Spermatophores readily extruded from male when 
placed in lactic acid, as shown in figure 30. 
Color in life resembling that of female. 
Erymotocy.—The specific name varirosiratus, from Latin var- 
ius=different and rostratus=furnished with a beak, alludes to the 
different shape of the rostrum in the two sexes of this species. 
COMPARISON WITH RELATED SPECIES.—Two features of L. variro- 
stratus serve to distinguish it from all other known species in the 
genus, namely, the presence of a spine instead of a seta on the first 
segment of the endopod of leg 4 and the two unusually long terminal 
claws on the second antenna. In only one other species, L. anomalus 
A. Scott, 1909, does the endopod of leg 4 appear to have the formula 
0-I, II (based on Scott’s fig. 15, pl. txvir); the usual formula in 
Lichomolgus is 0-1, II. Scott’s species differs from the new species, 
however, in having only one claw on the second antenna. The general 
structure of the endopod in leg 1 of the male of L. varirostratus re- 
sembles rather closely that of L. anomalus. Scott noted that this 
geniculate form “is quite distinct from what is usually found in males 
of this genus.” 
Two unusually long terminal claws occur on the second antenna in 
four species—L. canwi Sars, 1917; L. eversi Thompson and A. Scott, 
1903; L. marginatus Thorell, 1860; and L. tenwicornis Brady, 1910— 
but in all of these species the formula for the endopod of leg 4 is 
0-1, II, thus readily separating them from the new species from 
Madagascar. 
Lichomolgus exilipes, new species 
FIcuRES 32-55 
TYPE MATERIAL.—31 99 and 18 oo from a colony of Dendro- 
nephthya mucronata (Piitter), in 4 m, on the northeastern coast of 
Antany Mora, Isles Radama, Madagascar, 14°06/10"S, 47°45’10"E, 
collected Sept. 30, 1964. Holotype 9, allotype, and 35 paratypes 
(25 99 and 10 oc") deposited in the United States National Museum, 
and the remaining paratypes in the collection of A. G. Humes. 
OTHER SPECIMENS.—From Dendronephthya mucronata: 15 99 and 
8 oo from 6 colonies, in 1 m, off Ampombilava, Nosy Bé, Mada- 
gascar, Sept. 26, 1964, and 6 oo’ from 1 colony, in 1 m, Tany Kely, 
a small island south of Nosy Bé, June 23, 1963. From Dendronephthya 
regia Verseveldt: 2 99 from 1 colony, in 40 m, Banc de Cinq Métres, 
west of Nosy Bé, at about 13°23’30’’S, 48°04’00’’E, Aug. 19, 1964. 
From Dendronephthya stocki Verseveldt: 192 and 6 oo from 1 colony, 
