274 SoutJicrii Cross. 



SYLLIDAE. 



7. TyI'OSYLLIS uyalina. 



(ri. XLV., fi,i;s. 1-3.) 



Syllis hyalina, (inil>c, 1S()3, Anh. Nnturii., ji. -15; M.-ircnzellc-r, ISTo, SB 



Ah. Wi.n, LXXll., AMI). 1, J). 1'2<J; Elilers, 1807, op cit., p. 30. 

 Typosyllis hyalina, Langerhans, 1879, Zeitschr. wiss, Zool. XXXII., p. aSS. 



A sinjj[le specimen was dredged in company witli Maldanids and 

 Ariciiils o IT Cape Adare, January 17, 1900, in 8 fathoms. 



The body, 34 mm. in length by 2 mm. average widtli, maintains 

 an even transverse diameter until near the hinder end, where it 

 tapers to a point terminated by two breviarticulate anal cirri with 

 thirteen to fourteen joints. 



The tentaculum impar lias about seventeen joints indistinct 

 towards the base. Dorsal cirrus II is longer than the tentacular 

 cirri and than all the rest, having twenty clear joints and two or 

 three indistinct joints at the base. Cirrus III has about sixteen 

 joints, cirrus IV eighteen, and then the cirri somewhat lessen and 

 become fusiform with about fifteen joints, and equal in length to 

 little more than half the width of the body, again becoming some- 

 what longer and slenderer towards the posterior end. 



The eyes are in a wide trapezium, the anterior pair, as usual, 

 being the larger. 



This species belongs to a section of the genus characterised as 

 follows : — 



Cirri dorsales breves ; setae bidentatae.^ 



The anterior segments present a banded appearance due to two 

 reddish-brown pigment tracts bounding a clear transverse space 

 which occupies the crest of each segment ; the posterior band is 

 generally interrupted in the middle line (fig. 2). 



8. EUSYLLIS KERGUELENSIS. 



Eusyllis kerguelensis, Mclntosli, W. C, 1885, ' VhaUciKjer' Hep., p. 191 

 Kl.k-rs, E., 1897, t. c, p. 12. 



This is a Syllid of lartje size, lonir cirri and smooth convex 

 dorsum, resembling in its habitus a Hesionid, as Ehlers points out.'-^ 



' Cams, .7. V., 1S85,' Piodroinus Fa\iiiao Mo.lit.,' Vol. I , ]>. 227. In the present 

 Hpecios the bitleiitatinn of the .^eiao is (il'tcn obscure. 



■^ It is curious that a niiinite Sylliil belongiiij;; to the saniesub-diviHion, Eiixi/Uiixt, 

 namely, Sylltdcx hnKiorirrata, Oerst., sl.oultl have been al.so compared to a Hesionid by 

 Lnngerhans (1879, Zeitsrhr. wiss. Zaol. XXXll., |i. 519). Besides beinir a minute 

 bjiccieH the dorsal curi are articulate except the first three, which are shorter audclavate. 



