A пелу species of Entoprocta from North-East Greenland. 405 



Loxosoma being L. singulare Keferstein, this name ought then pro- 

 perly to be restricted to the group : singulare, annelidicola, Dauen- 

 porti; the name Cyclatella van Beneden & Hesse becomes a synonym 

 hereto, provided it does not ultimately prove that L. annelidicola is 

 generically different from L. singulare, which does not seem pro- 

 bable. In any case the species singulare Keferst. remains the geno- 

 type of the genus Loxosoma. 



For the two other groups new generic names must be created; 

 I would suggest the name Loxocalyx for the group of species with 

 the foot-gland persisting through life, taking the species raja Schmidt 

 as the genotype. The species without winglike expansions of the 

 foot may be left in this genus for the present. — For the group of 

 species in which the foot-gland becomes atrophied after the fixation 

 the name Loxosoniella may be proposed, the species crassicauda 

 Salensky being taken as the genotype. 



These three genera form together a very natural family, Loxo- 

 somatidæ, the family having already been rightly established by 

 HiNCKS (Op. cit. p. 571). 



It may not be out of place to give a brief summary of the 

 classification thus proposed of this little family. 



Fam. Loxosomatidæ Hincks. 



Solitary Entoprocta with a contractile peduncle; the body (calyx) 

 compressed; the vestibule occupies an oblique position at the an- 

 terior, ventral side of the body. Buds developing from the sides of 

 the body. The family includes the following genera: 



Loxosoma Keferstein. (Syn. Cyclatella Van Ben. & Hesse). The foot 

 is developed as a sucking disk, provided with straight and 

 oblique muscles. No foot-gland, only single gland cells in 

 the disk. The animal can change its position. 



Genotype: L. singulare Keferstein. Other species: L. annelidicola (v. 

 Ben. & Hesse), L. Dauenporti Nickerson. 



Loxocalyx n. g. The foot is provided with a foot-gland, persisting 

 through life; only straight muscles developed. The animal 

 can probably change its position. The foot (mostly) with 

 winglike expansion. 



Genotype: L. raja (Schmidt). Other species: L. tethyœ (Salensky), 

 L. alata (Barrois), L. /ер/ос/шг (Harmer); possibly also: L. nea- 

 politanum (Kowalevsky) and L. Harmeri (Schultz). 



