POLYCH.^TA. BENHAM, 181 



Distribution. — The " Challenger " specimens came from off 

 East Moncoeur Island, Bass Strait, 38 fathoms, and off 

 Twofold Bay, New South Wales, in 120-150 fathoms. An- 

 other is recorded from 2,200 fathoms from Station 163, quite 

 close to this latter locality. 



These three " Challenger " stations, then, are practically 

 the same as the two stations from which the " Endeavour " 

 obtained the above material. 



Indian Ocean (Potts). 



Genus Lepidonotus, Leach {sensu stricto), Kinbenj. 



LEP1D0>;0TUS HEDLEYI, Sp. nov. 



(Plate xxxviii., figs. 1-7.) 



It is with some little hesitation that I make a new species 

 for the single individual, which bears some resemblances to 

 L. lissolepis, Haswell, and to L. purpureus, Potts, to which 

 I refer below. 



The specimen is ill preserved, and superficially resembles 

 Hannothoe etheridgei in its grey colour. 



It measures 20mm. by 9mm. over the chsetae, as measured 

 on the ventral surface, for the animal is flattened, somewhat 

 distoited, and the elytra displaced so that dorsal measure- 

 ments are uncertain. The el3^tra are uniformly pale gray, 

 translucent, oval, thin and a good deal crumpled ; they 

 overlap but slightly fore and aft, and do not entirely cover 

 the back. The dorsal surface of the body is marked by 

 transverse bands of dark pigment ; each band is composed 

 of a series of very narrow lines close together, crossing the 

 body in the alternate annuli (for as in other Polynoids each 

 segment is biannulate as in many Earthworms) ; and each 

 band is of the same width as the intervening uncoloured 

 band. 



The elytra (PI. xxxviii., fig. 1) appear to be smooth under 

 a lens, but are really sparsely covered with imiformly 

 arranged low conical tubercles which have an oval base, so 

 that they present under a low magnification a characteristic 

 appearance of elongated refringent dots with a slit along its 

 middle (PI. xxxviii., fig. 3\ 



Each elytron (PI. xxxviii., fig. 1) is oval with a sUght 

 anterior emargination, and is rather broader externally ; the 

 circular white areola is nearly central. The anterior region 



