230 " ENDEAVOUR " SCIENTIFIC RESULTS. 



dental plate (II) has six teeth, the most distal of which is 

 the smallest, the next is the largest, and, with the exception 

 of the third, which is also small, they decrease regularly in 

 size proximally. All are bluntly rounded. The left plate 

 has five teeth. The third pair has two large rounded teeth ; 

 the fourth pair has one indistinct tooth. 



Remarks. — The species is considerably larger than the 

 majority, and although both individuals are imperfect the 

 diameter indicates that the species is one of the largest. It 

 has some resemblance to L. heteropocla, Marenzeller,i which 

 is a Pacific species, especially in the character of the feet, from 

 which, however, it differs most conspicuously in the fact 

 that the jaws of Marenzeller's species have but four denticu- 

 lations on each of the large dental platen. ^ The form, too, 

 of the ventral hooks seems from the rather divergent figures 

 of Marenzeller and of MTntosL^ to have a less extensive 

 enlargement and less extensive wing ; while the details of 

 the apex are also unlike. It is also noteworthy that Maren- 

 zeller states that his species is eyeless, while MTntosh finds 

 a pair of eyes obliquely set but hidden by the anterior mar^^in 

 of the peristomium. The colour, according to the former 

 author, is " yellowish grey, with a feeble bronze iridescence 

 in the middle of the back," which is in marked contrast to 

 the colouration of this species. But how far is colour im- 

 portant by itself 1 From a comparison of the feet I supposed 

 that the present worms belonged to this species, but there is 

 some discrepancy between the accounts and figures given by 

 the two authors referred to, so that I have given a somewhat 

 detailed account of the species. It may quite probably be 

 synonymous. 



Locs. — Oyster Bay, Tasmania, 26 fathoms. 



Twenty miles east of Babel Island, Bass Strait. 



Genus Oenone, Savigny. 



Oenone haswelli, sp. nov. 



(Plate xliii., figs. 95-102 ; Plate xliv., fig. 113.) 



Four individuals, two of them are complete, two are 

 anterior fragments. A complete specimen measures 140 mm. 



1. Marenzeller — Denksch. Math. Naturwiss. Akad. AVien, .\!i.. IS?!), 

 p. 30. 



2. Moore (Proe. Acad. Nat. Sci. Pliiladelphia. 1908, p. o4()) notes that 

 the jaws var\- somewhat in the nntnhcr of dentieulations, but gives.no 

 details. 



3. M-Iiitnsh— Chnll. Rep.. ZooL, xii., IHS.'), p. 255. 



