2 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 121 



Family Lichomolgidae Kossmann, 1877 



Genus Lichomolgiis Thorell, 1860 



Lichomolgus organicus, ueyv species 



Figures 1-30 



Type material.- — ^207 99, 98 cf'cf, and 15 copepodids from a 

 colony of Tubipora musica (Linnaeus), in 1 m, Pte. Ambarionaomby, 

 Nosy Komba, near Nosy Be, Madagascar, collected June 8, 1964: 

 holotype 9 (USNM 113387), allotype (USNM 113388), and 144 

 paratypes (USNM 113389) (100 99 and 44 c^ cf ) deposited in the 

 United States National Museum, 80 paratypes (50 99 and 30 d^cf) 

 in the Museum of Comparative Zoology, Harvard University, and 

 the remaining paratypes in the collection of A. G. Humes. 



Other specimens.— All from Tuhi/poi^a musica collected in 1964: 

 8 99 and 8 cf cf , in 1 m, Pte. a la Fievre, Nosy Be, Jan. 5; 1 9, in 

 15 cm, Tany Kely, a small island south of Nosy Be, Mar. 29; 4 99 

 and 8 cfd^, in 1 m, Pte. Ambarionaomby, Mar. 31; 15 99 and 1 

 cf, in 1 m, Pte. a la Fievre, Apr. 15; and 14 99, in 2 m, Pte. 

 Ambarionaomby, Sept. 27. 



Female.- — Body (fig. 1) with moderately broad prosome. Body 

 length (not including setae on caudal rami) 0.99 mm (0.92-1.05 mm) 

 and greatest width (in middle of cephalosome) 0.49 mm (0.44-0.53 

 mm), based on 10 specimens. Ratio of length to width of prosome 

 1.5:1. Segment of first leg separated dorsally and laterally from 

 head by a transverse furrow; lateral areas of this segment not ex- 

 panded. Lateral areas of segments bearing legs 2 and 3 expanded 

 and rounded posteriorly; those of segment of leg 4 smaller and 

 somewhat truncated. 



Segment of leg 5 (fig. 2) Avider than long, 61^ x 133)u, ■\\dth fifth 

 legs borne laterally. Ventrally between this segment and the genital 

 segment no apparent intersegmental sclerite. Genital segment (fig. 2) 

 about as long as mde, 140^ x 142/i, in dorsal view expanded laterally 

 in its midregion, posterior to which the segment is constricted so 

 that its width at the posterior end is only 80/i. Areas of attachment of 

 egg sacs located dorsolaterall}'" on posterior part of expansions. Each 

 area (fig. 3) with 2 naked setae, 12 and 13^ in length; posterior to the 

 setae a small rounded sclerotized protuberance. Three postgenital 

 segments, each without ornamentation except for a few surficial 

 haks (sensilla), 37/i x 67^t, 26/x x 55/x, and 28/i x 51^, respectively, from 

 anterior to posterior. 



Caudal ramus (fig. 4) only a little elongated, 36/^ x 24/i in greatest 

 dimensions, or 1.5 times longer than wide. Length along inner edge 



