99 
20 
nation quite the same shape as those ofthe /sops-species. They have 
however 1°. always walls, 2°. are these walls much more deve- 
loped; the upper parts forming a kind of dome over the sphineter 
(ig. 155, Pl. IV), about in the same manner, but perhaps less 
. developed, as in Pachymatisma Soll. 
9. Geodia Barretti Bwk. (char. emend. Sollas) [Pl. III, 
figg. 50 and 51; pl. IV, figg. 120—122]. 
Diagn. Corpus irregulatiter sphaeroides. Spicula indicantia: ac? (f) | 
ac? | M.ta.d. bif. | M.ta.@ < 90° | M. ta. ® > 90° | gl. | st. | 
Local. Lat. 71°12'5 N.; long. 20° 30'5 E. [neighborhood of Ham- 
merfest] (July 2. 1879). 
Geogr. distrib. Vigten Island (Bwk.); Kors-Fiord (Soll.) 
Depth. 135 Fathoms. 
Synon. and literature. 
1858. Geodia Barretti Bwk. 
(Bowerbank, Phil. Trans. Vol. CXLVIII part. 2 pag. 279). 
1867. Oydonium Barretti Gray. 
(Gray, Proc. Zool. Soc. pag. 548). 
To see also: 
1862. Bowerbank, Phil. Trans. Vol. CLII, part. 2. 
1864. id. Monogr. Brit. Spong. 1 pagg. 168 and 171. 
1866. Schmidt, II Supplem. pag. 11. 
1869. Carter, Ann. and Mag. IV. 
1872. Bowerbank, Proc. Zool. Soe. 
1880. Sollas, Ann. and Mag. V pagg. 247—257; tab. X— XII. 
1880. Schmidt, Spong. Meerb. Mexico pag. 74. 
Special description. 
a External character. 
„Ihe specimen under description differs in trifling details from 
(Bowerbank’s) Geodia Barretti, and must necessarily be include: 
in that species”. These words of Sollas!) can be used again for 
1) 1. e. pag. 247. 
