40 
Oscar Schmidt has described in 1870 the species Oh robustior. From 
this Sponge he only says: „Eine isländische Form (Ch. robustior 
N. Mus. Hafn.) hebt sich durch die Grösse der Nadeln (0.23 mm.) 
von der britischen Ch. oculata (0.093 mm. lang) ab”. Nobody will 
disapprove, I hope, that I have put a ? after the name, Schmidt's 
diagnosis being really too short. 
19. Chalinula spec. [Pl. 1V, figg. 148—151.] 
Diagn. Spongia inter Anthozoarum polyparia erescens. Spicula indi- 
cantia: tr. ac. | ac”. | 
Local. Matosjkin-Shar (lat. 73° 10'N.; long. 57° E.) 
Depth. 2—11 Fathoms. 
Literature. 
1870. Schmidt, Spong. Atl. Geb. pag. 38. 
This Sponge grows between polyparia of Anthozoa, another time 
it covers the shells of Balanidae. The colour is greyish-white. It 
appears to me not impossible that it is identical with Schmidt’s 
Chal. ovulum, that the specimen of Schmidt was a young one, and 
the oval shape only accidental. Being wholly uncertain as to this 
point, I do not give a specific name to the Sponge, as long aa I 
have not yet seen original specimens of Ch. ovulum. Illustrations 
of the spicules are given on plate IV. I found the following kinds: 
1°. tr. ac. (figg. 148, 149, 151). Very frequent, nearly always 
bent or curved, often two times. They are varying in length. 
2°, ac?. (fig. 150). Rather rare. Perhaps not characteristic for 
the species. Schmidt does not mention acerates in Ch. ovulum. 
20. Auletta elegans n. sp. [Pl. I, fig. 20; pl. III, fig. 70; 
pl. IV) He.158.] 
| Diagn. Corpus subeilindriforme elongatum cum caule in plantis hae- 
rens. Caulis corpore tenuior. Spieula indicantia: tr. ac. 
Local. Lat. 75° 16’ N.; long. 45° 19'E. (July 30, 1878). 
Depth. 160 Fathoms. 
Literature. 
1870. Schmidt, Spong. des Atlant. Geb. pag. 45. 
