208 Miscellaneous. 



Molpadia borealis, M, Sars, with whicli 3f. inolacea, Studer, is 

 probably identical, is referred bj' the authors to their genus Tro- 

 chostoma, as also Haplodactyla arctica, Marenzeller. Allied to these 

 is a new genus with two new species. 



Ankyroderma, g. n. 



Body cylindrical. Anterior end transversely cut off. Buccal 

 disk furnished with fifteen tubular processes, alternating with fifteen 

 oblong depressions, in which there are fifteen papilliform tentacles. 

 The posterior extremity produced into a tail-like process. Cloacal 

 aperture surrounded by five papillae. 8kin furnished with perfo- 

 rated papillae, together with singular calcareous bodies consisting of 

 five to six spatulate calcareous rods arranged in a stellate form, from 

 the centre of which rises a calcareous anchor. No feet. Two 

 intestinal appendages. 



Anlyroderma Jeffreysii, sp. n. 



Body elongated, cylindrical. Caudiform process long. Tenta- 

 cles extremely small, furnished with three papillae, of which the 

 middle one is the largest. Genital papilla large, prominent. Cal- 

 careous bodies in the skin of three forms, — anchors attached to 

 spatuliform calcareous rods, perforated calcareous plates with crowns, 

 and oval claret-coloured bodies, placed in groups. The colour of 

 the skin in the living animal is greenish with a violet tinge from 

 the scattered red points, or sometimes dark violet. The anterior 

 end of the body has a white pentagonal ring, within which is the 

 white buccal disk with white tentacles. The genital papilla in 

 part yellowish white, in part full yellow ; caudiform prolongation 

 white. 



Hah. Station 260, Porsangerfjord in 127 fathoms, temperature 

 3°*5 C, and 261 Tanafjord in 127 fathoms, temperature 2°-8 C, on 

 a muddy bottom : Station 262, Tanafjord in 148 fathoms, tempe- 

 rature l°-9 C, ooze ; Station 372, 97° 59' N. lat., 5° 40' E. long., 

 in 459 fathoms, temperature —1° C, on bluish-grey mud. 



Anhyroderma affine, sp. n. 



Body cylindrical. The caudiform process shorter than in the 

 preceding. Tentacles extremely small, with three papillae. Genital 

 papilla not prominent. On the surface of the skin tolerably regular 

 rows of anchors attached to spatuliform calcareous rods. Among 

 these are some peculiar calcareous branches, from the common 

 starting-point (central point) of which there rises either a three- 

 knobbed crown or a long calcareous spicule, or some exceedingly 

 variously formed perforated calcareous plates Avith crowns ; and in 

 the deeper layer of the *skin a great quantity of colourless more or 

 less rounded bodies consisting of a conglomerate of calcareous 

 prisms. Skin greenish ; buccal disk and caudal point white. 



Hah. Station 290, 72° 27' N. lat., 20° 61' E. long., in 191 fathoms, 

 temperature 3°-5 C, sandy clay. 



The genus Trochostoma, Dan. & Kor., includes T. Thomsonii, 

 D. & K., with no cloaca ; and with cloaca T. horeale, M. Sars, T. 

 arcticum, Marenz., and T. (Mol)).) ooliticum, Pourt. — Kyt Magazin 

 fur Naturv. Bd. xxv. pp. 83-140, pis. i.-vi. 



