92 JOHAN KIÆR. [No. ! 



wall, which have become very thick and spongy, whilst i 

 the first it was quite thin. The anus has also a somewh; 

 different appearance; the gut-list is much swollen, and h 

 a budlike appearance, whilst the fine, somewhat divided li] 

 are opened widely from each other. This has also its eau 

 in a strong puberty. When the animal is tåken out of t] 

 testa, in the middle of the gut-twist, there is always seen 

 generally sharp edged ellipse shaped hole wherein fits a smi 

 tenon like elevation of the testa; this tenon is fast bound 

 the skin, and when the animal is tåken out of the testa, the 

 is always some of the skin adhering to the tenon. 



The genital organs are especially diffused upon the insi 

 of the gut, like a network of canals, which, however, al 

 send a branch up through the mentioned hole, over on t 

 outer side of the gut, to slightly branch here. 



The kidney concrements are only in the gut wall; th 

 form a small heap, each in its cellular membrane. 



Ascidia longisiphonata, nov. sp. 

 (Fig. 6-10). 



The form is long drawn, rather flattened at the sid 

 broadest behind, tapering forward towards the tentacle rii 

 whence the long and nearly equally broad mouth siph 

 stretches forth (fig. 6). The body is fast grown to fucus, w 

 small plane hindmost, so that the body leans towards the le 

 the testa is on the right side rather diffused over i 

 underlayer. 



Measurement of the whole animal: length, inclusive 

 mouth-siphon : 28 mm.; mouth-siphon's length : 10.5 mm. ; hei^ 

 directly in front of sewer-siphon: 9 mm.; intersiphonal j 

 stance: 19 mm. The same measurement of the animal talt 

 out of the testa: 24.5, 10.5, 7.19 mm. Distance between i 

 dorsal tubercle and the nerve ganglie: 2 mm. 



The body is very thin, smooth, soft, and transparent, ^ 1 

 single fast-grown remnants of seaweed on the hinder pi' 

 especially upon the left side. 



