Besham. — Polychaetous Annelids from Kermadec Islands. 173 



Farn. Chlorhaemidae. 



Flabelligera bicolor Sehmarda, 1861. (F. lingulata Ehlers and F. semi- 

 annulata Ehlers, 1904.) 



Locality. — (a.) Coral Bay, Sunday Island ; six specimens, (b.) Denham 

 Bay, Sunday Island ; one. (c.) Meyer Island, rock-pools ; two. 



Distribution. — New Zealand (Elders). 



I have re-examined duplicates of those which I sent to Professor Ehlers, 

 and have arrived at the conclusion that his two species are identical, but 

 the individuals which he had at his disposal were in different states of pre- 

 servation. I have written to him, and have received a reply in which he 

 allows me, as having had abundant material to compare, to unite them. 

 In my opinion Ehlers' name must give way to Schmarda's, who found onlv 

 one species of Flabelligera, and as I have received specimens from the same 

 locality as he found it — namely, Auckland Harbour — it is practically certain, 

 in spite of the imperfect account given by him, that we are dealing with 

 Schmarda's species, for I have received from all parts of our coasts only 

 the one species of Flabelligera.* 



ADDENDUM. 

 Note on the Young of Hipponoe gaudichaudi. 



After writing the above summary I received from Dr. Chilton five small 

 specimens of Hipponoe gaudichaudi which had been found by Mr. L. S. 

 Jennings within the mantle-cavity of Lepas anatifera, from the Kermadec 

 Islands. The worm has previously been found in association with barnacles. 

 Thus Bairdf (1868) refers to specimens then in the British Museum as having 

 been found " amongst barnacles on a log of timber (? Madeira)," and to 

 others from the neighbourhood of St. Helena as having been " concealed 

 in the valves of Lepas fascicularis. :i '' Mcintosh, also, in the "Challenger" 

 Report (1885) records, an individual "found adherent to Lepas fascicular is 

 on the surface of North Pacific " ; and MooreJ (1903) found specimens on 

 the under-surface of a log covered with Lepas anatifera which came ashore 

 at Vineyard Sound, Woods' Hole. The worm, then, appears to have always 

 been found on floating objects, to which they cling evidently by means of 

 their powerful ventral hooks. 



The interest of the present small specimens, which measure from 7 mm. 

 to 14 mm. in length, lies in the fact that on most of them I noted some 

 small brown bodies behind the dorsal chaetae, which I at first took for the 

 gills filled with blood, till on touching them they fell away, and were then 

 seen to be small annelids. They are a little more or a little less than 1 mm. 

 in length by about 0'4 mm. across the middle part of the body, tapering 

 to a blunt rounded end anteriorly and posteriorly. These spindle-shaped 

 annelids are the young Hipponoe, which evidently cling to the body of 

 the parent, and possibly wander over the body, for I found them some- 

 times between the bristles and the gill, more usually just behind the latter 

 in the intersegmental furrow, sometimes more dorsally than the chaetae, at 

 others rather more laterally ; usually a single one at any spot, occasion- 

 ally a couple together. 



* See article by myself in this volume (ante, p. 163). 



t Baird, Linn. Soc. Journ., x, 1868, p. 239. 



% Moore, Proc. Acad. Nat. Sci. Philadelphia, 1903, p. 793. 



