20 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 125 
second antenna, by the nature of the teeth on the lash of the second 
maxilla, and by the form of the fifth legs in the female. 
Lichomolgus aculeatus, new species 
Figures 97-113 
TYPE MATERIAL.—69 99, 116 oo’, and 39 copepodids from a 
colony of Nephthea aberrans Verseveldt, in 10 m, Tany Kely, a small 
island south of Nosy Bé, Madagascar, collected Aug. 21, 1964. 
Holotype 9, allotype, and 154 paratypes (54 92 and 100 oo) de- 
posited in the United States National Museum, 20 paratypes (10 
92 and 10 oc’) in the Zodlogisch Museum, Amsterdam, and the 
remaining paratypes in the collection of A. G. Humes. 
OrHER SPECIMENS.—From Nephthea sphaerophora Kiikenthal: 33 
99, 17 oo, and 11 copepodids from 1 colony, in 3 m, Pte. Lokobe, 
Nosy Bé, Oct. 16, 1960. From Nephthea crassa Kiikenthal: 27 99, 
46 oo’, and 33 copepodids from 1 colony, in 2 m, Pte. Mahatsinjo, 
Nosy Bé, Aug. 8, 1960; 51 99 and 97 oo from 1 colony, in 2 m, 
Tany Kely, Aug. 26, 1960. From Nephthea tixierae Verseveldt: 70 99, 
92 oo, and 100 copepodids from 1 colony, in 8 m, Nosy Ovy, Isles 
Radama, 13°59’S, 47°46.5’E, Sept. 30, 1964. From Litophyton ar- 
boreum Forskal: 189 99 and 47 @o from 1 colony, in 3 m, Andrai- 
karekabe, western shore of Nosy Komba, near Nosy Bé, Oct. 9, 1964. 
FEMALE.—Body (fig. 97) with moderately broad prosome. Length 
1.26 mm (1.21-1.32 mm) and greatest width 0.57 mm (0.55-0.59 
mm), based on 10 specimens. Segment of leg 1 separated from head 
by a distinct furrow. Epimeral areas of segments of legs 2 and 3 
angular. Ratio of length to width of prosome 1.49:1. 
Segment of leg 5 measuring 83y x 190u. Between this segment and 
genital segment no ventral intersegmental sclerite. Genital segment 
(fig. 98) longer than wide, 2214 x 195y, its lateral areas not expanded. 
Areas of attachment of egg sacs situated dorsally near middle of 
segment. Hach area with 2 minute naked setae. Three postgenital 
segments 75u x 127y, 44u x 107, and 39u x 110 from anterior to 
posterior. 
Caudal ramus (fig. 99) about 2.2 times longer than wide, 100 x 
48u when measured dorsally, 110% x 484 when measured ventrally. 
Outer lateral seta 122u long and naked; all other setae with prominent 
lateral spinules. Pedicellate dorsal seta 55y, outermost distal seta 
148, innermost distal seta 1614, and the 2 long median terminal 
setae 213u (outer) and 230u (inner), both inserted between dorsal 
and ventral flanges bearing marginal spinules. Dorsal surface of 
ramus with fine ornamentation as in figure. 
Ratio of length of prosome to that of urosome 1.7:1. 
