l58 '• ENDEAVOUR " SCIENTIFIC RESULTS. 



These small differences, however, are of little importance 

 when the general agreement is so close. 



Remarks. — It seems useless to attempt to identify Baird's^ 

 " Sabella grandis " from which the gills were absent, and 

 almost as useless to speculate as to whether the present 

 species is or is not identical with Spirographis australiensis, 

 Haswell,- from Port Jackson, for little precise anatomical 

 detail is given. Both, however, are large forms, whatever 

 genus they may belong to. It is possible that the large size 

 and the inrolled gill-base led Haswell to place it in that genus. 



The former is said to have come from New Zealand, but 

 no Sabellid of this size (six and a-half inches without the gills) 

 has been met with on these shores since that date. 



Loc. — Off Babel Island, Bass Strait, about 60 fathoms. 



Distribution. — Japan. 



Family SERPULID/K. 



Genus Spirobranchus, Blainville. 



Spirobranchus latiscapus, Marenzeller. 



(Plate xlviii., figs. 46-50.) 



Pomatostegus latiscapus, Marenzeller, Siid- Japan. Annelid., 

 1884, p. 22. Id., Moore, Proc. Acad. Nat. Sci. Phila- 

 delphia, 1904, p. 173. 



" ? Pomatoceros strigiceps," M'Intosh, Chall Rep., Zool., 

 xii., 1885, p. 173. Id., Treadwell, Bull. U.S. Fish. 

 Comm., xxiii., 3, 1906, p. 1179. 



I have transferred the species to the genus Spirobranchus 

 on accoimt of {a) the wide V-shaped ventral area on the 

 thorax, and {b) the form of the abdominal chsetae, which are 

 not " sickle " shaped as in Pomatostegus, but " trumpet " 

 shaped,^ and (c) the larger number of denticulations on the 

 uncini.^ 



It was Ehlers who fii'st pointed out these differences 

 between the two genera, which previously had been dis- 

 tinguished by the form of the operculum. Ehlers, Maren- 

 zeller, St. Joseph and others have relegated this feature to a 



1. Baird — Jour. Linn. Soc, viii., 1S65, p. KiO. 



2. Haswell— Proc. Linn. Soc. N. S. Wales, ix., 1885. p. 073. 



3. Ehlers— Florida Anneliden, 1887, p. 299. 



4. Pixell— Trans. Linn. Soc, Zool., xvi., 1913, p. 78. 



