274 Southern Cross. 



SYLLIDAE. 



7. Typosyllis hy^alina. 



(PL XLV., figs. 1-3.) 



Syllis hyalina, Grube, 1863, Arch. Natura., p. 45; Marenzellcr, 1875, SB 



Ak. Wk'ii, LXXIL, Abth. 1, p. 129; Elilers, 1897, op cit., p. 36. 

 Typosyllis hyalina, Langerhans, 1879, Zeitschr. wiss. Zool. XXXIL, p. 535. 



A single specimen was dredged in company with Maldanids and 

 Ariciids off Cape Adare, Jannaiy 17, 1900, in 8 fathoms. 



The body, 34 mm. in length hj 2 mm. average width, 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 has 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 s^jace 

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

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



8. EUSYLLIS KERGUELENSIS. 



Evisyllis kerguelensis, Mclutosh, W. C, 1885, ' ChaUcnyer' Hep., p. 191 

 Elilers, E., 1897, t. c, p. 12. 



This is a Syllid of large size, long cirri and smooth convex 

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



' Carus, J. v., 1885, ' Prodroinus Faunae Medit.,' Vol. I., p. 227. In the present 

 species the bidentation of the setae is often obscure. 



^ it is curious tliat a minute Syllid belonging to the same sub-division, EusylUna, 

 namely, SyUides longocirruta, Oerst., sLould have been also compared to a Hesionid by 

 Langerhans (1879, Zeitschr. wiss. Zool. XXXII., )i. 549). Besides being a minute 

 species the dorsal cirri are articulate except the first three, which are shorter and clavate. 



