Miscellaneous. 463 



Hahijtgia, g. n. 



Body cylindrical ; mouth at the anterior extremity, towards the 

 ventral surface. Anal orifice in the centre of the posterior extremity. 

 A slightly projecting crescentiform fold surrounds the mouth (rudi- 

 ment of the proboscis). In the anterior part of the ventral surface 

 there are two long cylindrical papillae, at the apex of which there is 

 a round aperture for the efferent duct of the uterus. No setae. 



The intestinal canal forms loops, but no spiral, and terminates in 

 a cloaca, from each side of which springs a ramified glandular ap- 

 paratus. Central nervous cord smooth, without ganglia. One 

 ovary, which lies along the nervous cord in the posterior half of the 

 body-cavity. Two uteri, with their efferent ducts and funnels. 

 Male unknown. 



Hamingia arctica, sp. n. 



Body cylindrical, smooth, 120 millims. long, 20 millims. broad, 

 assuming various forms under contraction. Colour lighter or 

 darker grass-green, with yellowish- white buccal disk. The crooked 

 papillae on the ventral surface greenish, with yellowish-white extre- 

 mities. 



A single example, taken at Station 290, in 72° 27' X. lat., 20° 

 51' E. long., on a bottom of sandy clay. It is nearly allied to 

 Bonellia viridis. 



A second new type of Bonellidae is briefly described as follows : — 



Saccosoita, g. n. 



Body claviform. The anterior part cylindrical, opaque, with a 

 round buccal aperture at the free extremity ; the posterior part, 

 containing the whole of the intestinal canal, is nearly spherical, 

 transparent, terminating in an opaque cone, at the apex of which is 

 the anus. Ovaries in the anterior part of the body-cavity. No 

 hooks. 



Saccosoma vitreum, sp. n. 



The anterior, cylindrical, opaque part of the body 12 millims. 

 long ; the posterior, transparent, globular portion 18 millims. long, 

 12-14 millims. broad. Colour of the anterior part of the body and 

 of the conical termination white with a slight reddish tinge; the 

 globular, transparent portion is colourless. 



A single example, at Station 40, in 63° 22'-5 N. lat., 5° 29' W. 

 long., from sandy mud at 1215 fathoms. 



Of the family Sipunculidae the authors give short characters of 

 the following new species : — 



Phascolosoma LiUjeborgii, sp. n. 



Cylindrical, transparent. Body furnished with scattered fine 

 papilla) ; its breadth in proportion to its length as 1 : 20. Pro- 

 boscis as long as the body, beset with exceedingly small acute 

 papillae. Tentacles eight to ten. One retractor. 



Many examples, taken at three stations, from 63° 5' to 71° 59' 

 N. lat., and between 14° 32'- 7 and 0° 52' 5 E. long., at depths of 



