AET. 15 POLYCHAETOUS ANNELIDS FROM OEIENT TKEADWELL 6 



The gills appear first as relatively thick, finger-shaped filaments 

 on the fifth setigerous somite. In the type there are six of these 

 filaments on the right side, while those of the left side have been 

 injured and the number is of no significance. In these first gills 

 the filaments arise independently of one another, but in later gills 

 they arise in bunches looking like the " hands " of a banana bunch, 

 though some of the filaments may be branclied. There are two of 

 these " hands " each having about eight filaments and the outer one 

 which is the larger bends over (in preserved material) and incloses 

 the inner one. The gills occur on all somites posterior to the fifth 

 setigerous though the number of filaments decreases toward the 

 posterior end of the body. 



In the parapodia the noto and neuro-podia are well separated. 

 The gill is situated tow^ard the posterior margin of the notopodium 

 and a vei-y delicate slender cirrus lies anterior to it. (Fig. 2 in 

 which a very small portion of the gill is shown.) The notopodial 

 setae arise in a circle inclined at an angle of about 45° with the 

 perpendicular and a long cirrus-like lobe extends out from the center 

 of this circle. By some writers this has been described as a second 

 dorsal cirrus but it seems to me not homologous with a dorsal cirrus, 

 but to be merely an outgrowth of the setal lobe. It extends from 

 the body about as far as do the setae. The neuropodial setae form 

 a smaller tuft than do the notopodial, the basal outline of the tuft 

 being oval. The ventral cirrus is similar in form to the dorsal but 

 is shorter than it. In anterior somites they are much larger than 

 they are posteriorly. The setae are all alike, unequally forked at 

 the end. (Fig. 3.) 



In addition to the individuals above mentioned, the collection con- 

 tains one specimen of the unpigmented variety, collected on Utilei 

 reef, Pango Pango by F. A. Potts. 



Family POLYNOIDAE 



Genus IPHIONE Kinberg 



IPHIONE OVATA Kinberg: 



Iphionc ovata Kinberg, 1857 to 1910, p. 8, pi. 3, figs. 8, 8a to Sh; pi. 10, 

 figs. 45 to 45e. 



Kinberg's specimens were 12 mm. long and 7 mm. wide, and were 

 collected in Honolulu. Chamberlin (1919 p. 64), described one 

 specimen from Paumotu Island, measuring 17 mm. in length by 10 

 mm. in width. My collection includes two individuals, the larger 

 of which is 25 mm. long and 10 mm. wide. The smaller is broken 

 and measurements are of little significance. Mine were collected in 

 Suva Harbor, Fiji. 



