BY WILLIAM A. HASWELL, M.A., B.SC. 293 



are 20 pairs, are imbricate and decussate ; they are subcircular 

 in outline, delicate and translucent, and not fringed. The colour 

 is light brown, with the head purple, and a brownish-purple band 

 along the centre of the body ; on each scale is a circular brown 

 mark irregularly bordered with black at the point of attachment, 

 and numerous white dots scattered over the surface. 



This species I found in the interstices of a specimen of 

 Tuhipora on Thursday Island, Torres Straits. 



Polynoe ochthoebolepis, sp. n. (PL X , figs. 8 — 10, and PI. XL, 

 figs. 1—3.) 



This species has an elongated form, there being fifty segments 

 bearing parapodia. The prsestomium is produced into two 

 rounded lobes, and behind it on the dorsal surface of the peri- 

 stomium are two pairs of rounded prominences. The unpaired 

 tentacle is five times as long as the head, stout, and, like the cirri 

 and paired tentacles, slightly swollen near the extremity, with a 

 slender apical portion. The lateral praestomial tentacles are 

 rather shorter and much more slender than the unpaired one ; 

 the peristomial tentacles are as long as the mesial. The peri- 

 stomium has a pair of acicula. The parapodia are not divided, 

 the dorsal branch being represented by a small tubercle with a. 

 few short setae. The ventral setae are similar somewhat to those 

 of Thormora argus, but with a long tooth near the apex, and 15 — 17 

 spines in each lateral row. There are no dorsal setae, the noto- 

 podium being only represented by a tubercle. The ventral 

 tubercles are distinct. The scale-tubercles are prominent, with 

 the surface of attachment longitudinally ovate. The elytra are 

 decussate and imbricate throughout the entire length of the 

 animal. They are irregularly ovate, thick-punctate, not fringed, 

 with minute papillae on the hinder portion, and are marked with 

 oblique lines of dark purple. The length is about 1 ^ inch, and 

 the breadth ^ inch. 



