Two new E(irtJnconn<t. 457 



been dissolved by ibc alcoliol. Tlic ])ro.Htomiiim is livr^^cly 

 i(tr;utt'(] witliiii the mouth-cavity; a groove half divides the 

 buccal segment. 



'I'lie first four segments of the body are undivided by 

 secondary aiinulations. Each of the two following segments 

 is divided into two annuli. 'ihe seventh and eighth seg- 

 ments are qnadriannulate, and the ninth and tentii are tri- 

 annulate. There remain two segments before arriving at tiie 

 clitcUum ; but these are at most indistinctly separated into 

 two annuli. 



The setpe are, as already mentioned, eight to each segment. 

 They are all very ventral in position. The distance between 

 setai c and d is about twice and a half the distance between 

 seta? a and b. I observed setai to exist upon the elitellum. 



The elitellum is fully developed all round the body. There 

 is no trace of any ventral area devoid of clitcllar tissue. The 

 length of the clitLdlum is .5 millim. and that of t!ie preceding 

 section of the body 9 millim. It occuj)ies segments xiii to 

 xvii inclusive, as in some of the other species of the genus. 



I am uncertain about dorsal pores, as the worm was much 

 contracted by the alcoliol in which it had been preserved. 

 Tiie oviducal aptrture (on segment xiv) a))pears at first sight 

 to be median and unpaired, as it has been stated to be in 

 Oclvclnetns Aitkeni. A careful examination, however, reveals 

 two separate pores lying close togetlier at tlie bottom of tiie 

 groove-like depression, which might be taken for the actual 

 pore. The area which bears the male pores is not very con- 

 sjncuous, on account of the shortness of the postclitellav 

 segment ; and, moreover, the end of the elitellum, where it 

 abru] tly terminates at the xviith segment, rather hangs over 

 and so conceals the anterior termination of the seminal grooves. 

 The whole area lies entirely within the ventral seta?, the most 

 ventrally placed of which couple lies a little to the outside of 

 the seminal grooves. On eitlier side of the seminal grooves 

 the surface of the xviiith and xixth segments was swollen 

 and tumid, looking over the space occupied by the ventral 

 seta?, and the buunchuy-line of the two segments in question was 

 in consequence not quite so clear as elsewhere. This species 

 therefore differs from the New-Zealand species of Octochcctus 

 in the much more medianly placed male pores atid seminal 

 grooves : in Octochatus nntarcticusj tor instance *, the spernii- 

 ducal gland pores correspond in j)Osition to the outermost of the 

 ventral couple of seta\ In Uctvcha'tus Beatrix, however, the 

 seminal groove, though it lies entirely within the ventral sette, 



* Beddard, rioc. Zool. Soc. 1892, p. 669, fig. 1 a. 



