POLYCHJETA. BENHAM. 179' 



Thc.se cirri have enlarged cirn>pln>res, and the tiagelluin 

 is minutely annulated. 



The 16 parapodia have the usual form, and each carrie,; a 

 long dorsal cirrus, springing from an enlarged cirrophore ; 

 the filament being about three times the length of the para- 

 podium, that is, as long as the width of the body. The four 

 anterior parapodia are smaller, the first much shorter, than 

 the rest. 



The chsetophoral sac has at its antero -dorsal margin a short 

 filamentous " ligule " into which the black aciculum projects. 

 This is easily overlooked unle.-s the foot is mounted with the 

 anterior surface upwards. It is not shown in M'Intosh's 

 figure of the foot. 



The cha'tiv are pale yellow, and of the usual form. 



The ventral cirrus reaches beyond the end of the para- 

 podium almost to the tips of the chaetse. 



The preanal segment carries dorsal and ventral cirri but 

 no distinct parapodium. The subanal cirri, borne by the 

 anal funnel, are as long as the dorsal cirri anteriorly. 



LOG. Off Babel Island, Bass Strait. 50-80 fathoms. 



Distribution. Red Sea, Indian Ocean, Pacific Ocean 

 (Tongatabu). 



Family APHRODITID^E. 

 Sub-Family POLYNOIN.E. 

 Genus POLYNOE (sensu latu), 1 Savign//. 



POLYNOE PLATYCIRRUS, M'lntOS,!. 



Polynoc platycirrus, M'lntosh, ('hall. Rep., Zool., xii., 1885,. 

 p. Ill, pi. iii., fig. 4, pi. xvi., tig. "2, pi. xix., fig. 3, pi. 

 viii.v., figs. 14, 15, pi. ixA., fig. 1. Id.. Potts, Trans. 

 Linn. Soc., Zool. xiii., 1010. p. 336. 



The material consists of two entire individuals and the 

 greater part (anterior end included) of a third. 



A complete specimen measures 7"> mm. in length by 1) mm. 

 across the elytra and 12 mm. over the ventral cha-t;r. 



1. The whole subject of the delimitation of the genera of the Polyn<>in.>' 

 seems almost in as much confusion as at the time Grube wrote his classic 

 paper " Bermerkungen Fam. Aphr >'liten I'.ilyn'iina," in 1875. 



