A new species of Entoprocta from North-East Greenland. 401 



homologues of the sense organs found in a corresponding place in 

 some other species of Loxosoma, viz. L. crassicaiida and phascoloso- 

 matum. (Cf. С. Vogt. Sur le Loxosoma des Phascolosomes. Arch. 

 Zool. expér. & génér. V. 1876. p. 312—13, Pi. XI. Fig. 3, PI. XII. Fig. l ; 

 Salensky. Op. cit. p. 12. PI. 12. Figs. 2— 4; Harmer. Op. cit. p. 273. 

 PI. XIX. Fig. 1). It is true, I have not been able to observe the 

 tactile hairs on the papillæ; but this must be due to the preserva- 

 tion. The darker spot seen outside the nucleus I suppose to repre- 

 sent the invaginated outer part of the papilla, so that the hairs 

 should lie within the invaginated part; if this be the right explana- 

 tion, one cannot wonder that the hairs are not to be seen; more- 

 over, I think I have seen indications of them in one case. Also in 

 L. annelidicola similar sense organs appear to exist (Cf. Prouho : 

 Etude sur le Loxosoma annelidicola. Arch. zool. expér. & génér. 2. 

 Sér. IX. 1891. p. 99. PI. V. Fig. 3), while the "flask organs" of L. Da- 

 venporti are regarded as not homologous to the sense organs of the 

 other species. (Cf. Nickerson: On Loxosoma Davenporti. Journ. of 

 Morphology. XVII. 1901. p. 357. PI. XXXII. Fig. 11, PI. XXXIII. Figs. 

 16-19). 



The inner anatomy of the animal is, so far as I have been 

 able to see, in its main features in accordance with the ordinary 

 type of this genus. The alimentary canal does not present more 

 prominent special characters; the anal tube is not free. The ner- 

 vous system and excretory organs I have not been able to trace 

 with certainty. The ovaries are seen in the specimen reproduced 

 in Fig. 4. In a specimen sectioned I find the testes well developed. 

 The species is accordingly not bisexual — or, at least, both sexes are 

 not developed contemporaneously. It may be 



Avorth noticing in this connection that buds ® *, *i 



were present on the male specimen. The ^ - ; '- î i" .^^ « ./ 

 genital ducts have not been observed. In one *1' ^ % \ 



of the specimens sectioned an embryo lies ' Г/ %^ 9 ф'- 



within the atrial cavity. Any structure recal- «* ff 



ling the mammary organ of L. Davenporti ,,,^ ^^ i 



does not exist. * ^^' **- *l 



The buds arise alternating, one on each \fe ^ «кь л, , 



side (Figs. 2, 3). As stated above, there is a *^ # 



well developed foot-gland in the buds; it is «** ®^ 



somewhat widened at its upper end (Textfig. 1). „. , ^ ,. , 



^^ ° Pig. 1. Optical section 



This widening appears to be the homologue throu«h the foot of a 

 of the "corps pédieux" described by Vogt bud, showing the foot- 

 in Loxosoma phascolosomatiim (Op. cit. p. 341. gland, ^^-'h. 

 PI. XIV. Figs. 8 — 16). VoGT does not seem to have observed that it 



