10 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 121 



maxilla, last tooth slightly bifurcated or entire. Maxilliped and 

 postoral area much like those in L. organicus. 



Legs 1-4 resembling those of female with same spine and setal 

 formula, except for sexual dimorphism in leg 1 (as in L. organicus). 

 Two spines on last segment of endopod of leg 1 like those in previous 

 species, outer 27/x and inner 40^ long. Two terminal spines on 

 endopod of leg 4 18/i (outer) and 50m (inner), ratio of 1:2.8. 



Leg 5 resembling that of L. organicus, but free segment relatively 

 slightly shorter, 28/i x 8)tx. 



Leg 6 similar to that in previous species, but 2 naked setae slightly 

 longer (28m). 



Spermatophores, seen only inside body of male, resembling those of 

 L. organicus. 



Color in life like that of female. 



Etymology. — The specific name conjunctus, from Latin, meaning 

 "closely related or bordering on," refers to the close similarity be- 

 tween this and the preceding species. 



Comparison with related species. — L. conjunctus closely re- 

 sembles L. organicus in general appearance, but a careful study shows 

 certain constant and characteristic differences. These are sum- 

 marized in table 1. 



Association of the two lichomolgids with the alcyonarian.^ — 

 Both L. organicus and L. conjunctus were recovered after washing 

 unbroken colonies of Tubipora musica in sea water to which about 5 

 per cent ethyl alcohol had been added. The exact habitat of the 

 copepods is unknown, but there seems to be little doubt of their 

 association with the alcyonarian in view of the large numbers of 

 individuals recovered. 



Family Clausidiidae Embleton, 1901 



Genus Hippomolgus Sars, 1917 



Hippomolgus latipes, new species 



Figures 37-58 



Type material.- — 8 99 from a colony of Tubipora musica (Linnaeus), 

 in 1 m, Pte. Ambarionaomby, Nosy Komba, near Nosy Be, Madagas- 

 car, collected Mar. 31, 1964: holotypic 9 (USNM 113395) and 4 

 paratypic 99, (USNM 113396) deposited in the United States National 

 Museum; remaining 3 99 (dissected) in the collection of A. G. Humes. 



Other material.' — Also from Tubipora musica: 1 9, in 1 m, Pte. 

 Ambarionaomby, Nosy Komba, June 8, 1964. 



Female.' — Body (fig. 37) with a rather harpacticoid appearance. 

 Length (excluding setae on caudal rami) 1.13 mm (0.97-1.19 mm) 



