280 CEYLON PEARL OYSTEE REPORT. 



Eunice antennata, Savigny. 



Crossland, "Polychajta of Zanzibar," 'P. Zool. Soc. London,' 1904, vol. i., p. 312. 



Locality : South-east Cheval Paar, on pearl oysters, very numerous. 



The pectinate branchiae commence on segment VIII. ((5th foot), the first gill is 

 multifilar ; they diminish towards the middle and then increase again both in size 

 and number of filaments posteriorly. In some specimens small branchiae commence 

 on the 5th foot, in others on the 7th foot, very rarely on the 3rd and 4th foot. 

 Antennas and cirri moniliform. The acicular setae show a third smaller tooth over the 

 two main prongs ; the compound setae of the posterior feet are characterised by the 

 presence of a third denticulation in a similar position to that in the acicular setae. 



Eunice coccinea, Grube. 



Crossland, "Polychseta of Zanzibar," 'P. Zool. Soc. London,' 1904, vol. i., p. 297. 



Station V., off Chilaw, Gulf of Manaar, 11 fathoms, two specimens. 



The differentiation of this species from E. afra depends chiefly upon examination 

 in the fresh condition. The colour is leucostict, but E. leucosticta is regarded as a 

 synonym of E. afra. There is a pale collar on the 6th segment, so there is in 

 E. collaris, which is another synonym of E. afra. Branchiae commence on 13th foot, 

 biramous on 15th, triramous and greatly exceeding the dorsal cirrus from 20th to 

 50th, long unifilar on 60th, decreasing and ceasing about the 90th, leaving upwards 

 of 70 posterior segments without branchiae and with rudimentary dorsal and ventral 

 cirri. Another broken specimen had quadrifilar branchiae. Complete specimen small, 

 coiled, about 45 millims. long, width of anterior gill-bearing region 3 millhns. ; 

 segments about 170 ; compound setae normal; acicular setae bidentate. 



All characters are misleading except the shape of the body ; the head is narrow, 

 the body widening out markedly in the anterior region ; the hind-body is rounded, 

 not flattened ; the intersegmental grooves are coloured brown. The general form of 

 the body decides me to refer the present specimens to E. coccinea. E. coccinea 

 apparently bears the same relation to E. afra that E. murrayi does to E. antennata. 



Eunice indica, Kinberg. 



Gravier, op. cit., 1900, p. 242; Crossland, op. cit., 'P. Zool. Soc. London,' 1904, p. 318. 



Station V., off Chilaw, 11 fathoms, one small specimen, incomplete behind. 



Prostomium seen from above with frontal border entire ; tentacles smooth ; 

 compound setae with projecting guards, best seen in the branchial segments ; acicular 

 setae from the postbranchial segments with trifid tip, the apex ecpually bidentate, and 

 a large subapical tooth. 



Another specimen was associated in the trawl with Phyllochcetopterus ramosus from 

 Galle, Station XXXVIIL, 17th February, 1902, depth 22 fathoms. 



