152 DISCOVERY REPORTS 



is very poor and of little use for purposes of comparison. The unidentate pseudo- 

 compound bristles are puzzling because of the apparent absence of any hood. It may, 

 of course, have been worn away. 



Onuphis aucklandensis, Augener. 



Augener, 1924, p. 418, fig. 11 a-c; and 1927, p. 172, fig. 7. 

 Fauvel, 1932, p. 146. 

 Occurrence. St. 938, New Zealand (i); 939, New Zealand (2). 



Specific characters. I believe these to be young examples of Augener 's species. 

 None is complete. The largest measures 21 mm. by 2 mm. at the widest part for 86 

 chaetigers. In the anterior region the dorsum is banded with brown. The lateral 

 occipital tentacles reach back to the 15th chaetiger (according to Fauvel to the 24th- 

 27th). Apparently the normal condition is for the gills to begin on the 2nd chaetiger 

 and to reach a maximum of about five filaments by the 7th chaetiger, but in two out of 

 three of the present specimens the gills begin on the first chaetiger. The gills are bifid 

 by the 4th-6th foot : in one specimen they are trifid at the 6th foot and in the other two 

 trifid at about the 20th chaetiger. The maximum number of filaments is four, and this 

 is reached by about the 25th chaetiger. The largest fragment still has bifid gills on the 

 86th chaetiger. 



There are tridentate and bidentate pseudo-compound bristles in the first five chaetigers 

 (Fauvel gives the first three). The ventral cirrus disappears at the 7th foot and the post- 

 chaetal lip of the foot at about the 20th chaetiger. The bidentate hooks appear at the 

 15th chaetiger. 



Remarks. Fauvel (1932, p. 146) records specimens of O. eremita with bifid gills 

 behind the ioth-i3th feet, and my specimens with the gill beginning on the ist foot 

 and branching on the 5th-6th are near to these, but on the whole they appear to be 

 closer to Augener's species, especially as they are clearly the same as the specimen with 

 the gill beginning on the 2nd foot. 



Genus Hyalinoecia, Malmgren 

 Two cushion-like palps, two short frontal tentacles, and five occipital tentacles borne 

 on ringed tentaculophores. The first achaetous segment is devoid of tentacular cirri. 

 Pseudo-compound bristles are present in the first few chaetigers, followed by capillary, 

 acicular and comb-chaetae. Upper jaw with mandibles and toothed plates of which 

 one is unpaired. 



Hyalinoecia tubicola (O. F. Miiller). 



Fauvel, 1923, p. 421, fig. 166 i-q. 

 Augener, 1924, p. 422. 

 Occurrence. St. 935, New Zealand (i); St. 936, New Zealand (6). 



Specific characters. Gills simple cirriform, beginning at the 2oth-25th chaetiger. 

 First two chaetigers with simple bidentate hooded crochets (pseudo-compound in 

 young specimens). Tube free, transparent, horny, not covered with sand-grains. 



