165 



The specimen from Vatek measures 34 cm in length, and the 

 specimens from Toeal measure 14-21-23 cm in length. The colour 

 is uniformly brownish-grey and the tentacles are a little darker than 

 the body. The three specimens have 13 tentacles and the fourth, 

 one of those from Toeal, but twelve. Each tentacle has ca. 20 pairs 

 of digits united by a web. The eyes are well developed, but eye- 

 spots are not visible on the oral disk. The calcareous ring (Fig. 

 16. 3) is thick and on the exterior side it has large and distinct 

 muscular impressions. It is pure white and the radial pieces are 

 perforated for the nerves. The cartilaginous ring is stout and 

 nearly quite encloses the calcareous ring. It has small perforations 

 through the posterior margin, close to the circular canal. There are 

 many polian vesicles of different size and a single stone-canal. The 

 gonads are voluminous and branched several times. The intestine 

 has a loop and on the mesenteries there are ciliated funnels of the 

 common size and shape. 



The anchors from the anterior end of body (Fig. 16. 2) measure 

 ca. 270 fi in length and 180 jii in width, and those from the posterior 

 end (Fig. 16. 1) measure ca. 330 X 200 yu. They are of very nearly 

 the same shape, with the stock finely dented and with minute knobs 

 on the vertex. The anchor-plates are very different in the two ends 

 of body. Those from the anterior end (Fig. 17. 2) measure ca. 210 [i 

 in length and 150 fv in width. The articular hole is usually smooth 

 and in the posterior end of the plate there are ca. 5 small holes. 

 The plates from the posterior end (Fig. 17. 1) are of the same 

 length, but they are wider, ca. 175 /li, and have but three small 

 holes in the posterior end. The articular hole is in these plates 

 usually serrate on the anterior margin. In both shapes of plates 

 the bridge is distinctly dented. 



Miliary granules are totally wanting, and as the anchors and 

 plates show no signs of dissolution, the granules cannot have been 

 dissolved. 



The four specimens at hand are very characteristic. They differ 

 from all the species at hand in the shape of both the calcareous 

 ring, the anchors and the plates. Furthermore the lacking of miliary 

 granules gives a very valuable character. Whether they are really 

 the same as SI u iter's aspera is not at all certain, but as this is 

 the only species of Synaptula described, which is wanting the 



