POLYCH.^TA— BENHAM. 43 



being separated from one another by aliout the diameter of an eye. They are hirge, 

 and herein there seems to be a difference from the type, of whicli Mcintosh says tliat 

 it " appears devoid of eyes." 



The median tentacle is absent from Itoth sj^ecimens. The hxterals spring from 

 below it (fig. 31), and are directed parallel with it, not divergently as in some species. 

 They are tapering without any siibterminal swelling : they bear a few microscopic 

 hairs. In length they are short, being not quite twice the length of the prostomium. 

 The palps are long, smooth, and of a greyish-brown colour. 



The parapods are bilobed ( tig. 32). The notopod has a long acicular process whicli 

 is more slender than that of the ueurojiod. The anterior feet are longer than the posterior. 

 The cheetse are pale yellow or, as Mcintosh terms them, " straw-coloured."' The dorsal 

 cheetae are more numerous than the ventral, being 15-20 in number. They form an 

 upwardly directed tuft of shorter, stout aiwl straight bristles, and a few in the lower part 

 of the bundle are longer and directed outwards. The pectinated frills (fig. 34) nearly 

 surroimd the axis. At any rate, they extend across it over the greater part of this 

 region ; the distal portion of the bristle is smooth and rather sharply pointed. 



The ventral cha^tse are few in number, from 5-8, usually 6. They appear to be 

 in a single vertical series, decreasing in length from above downwards. They are rather 

 stouter than the largest of lower ones in the notopod. but they are a good deal longer. 



Tlie frilled region (tig. 35) is rather short, and is somewhat enlarged. The frills 

 are few, some 12-14, and delicate ; the distal frills are not continuous, but each is 

 represented by two or three isolated groups of pectinations, and lower down these extend 

 till they meet and form a contirmous frill of fine short, hair-like processes, which takes 

 an irregular course across the bristle and reaches the convex border or "'back." The 

 smooth apex is curved, and there is no sign of a sub-apical tooth. 



The form of the cha'ta' agrees with the figures given by Mcintosh, though I have 

 added some little details. 



Localities. — 



Station 10, 325 fathoms (two). 



Station 11, 358 fathoms (one). 

 Distribution. — South of Australia, Lat. 42" 43' South, Long. 134^ 10' East, 1,(300 



fathoms. 



Genus Eulagisca Mcintosh. 



EULAGISCA CORRIENTIS Mclntosk. 



Mcintosh (1885), p. 91, pi. XIII, fig. 4 ; pi. V!I a, figs. 3, 4. 

 (Plates 6 and 7, figs. 36-42.) 

 The larger of the two specimens of this rare worm is 83 mm. in length, with a 

 diameter of 11 mm. over the body, and 23 mm. over the parapods. It contains 37 

 segments. The smaller consists of 33 segments, is only 20 mm. by 3 mm. over the body 

 and 8 mm. including the parapods, which are relatively long. 



