195 



Synaptula bandae n. sp. 



Zonnegat, Banda. 4.VI.1922. Sand, coral. 1 specimen. 

 Banda. 5. VI. 1922. Ca. 20 m. Sand, sponges. 1 specimen. 1 ) 

 Off Waling, Banda. 15.VI.1922. 15 m. Sand. 1 specimen. 



The specimens at hand measure ca. 3 cm in length. Their colour 

 is in the two specimens pure white, and in the third, that from 

 Banda 5. VI., there is a faint purple stripe in each ambulacrum, so 

 the colour of this specimen is rather like that of lamperti. There are 

 10 very short tentacles, each with but 4 — 5 pairs of digits. The 

 tentacles are in the two specimens so contracted that the presence 

 or absence of a web cannot be ascertained, but in the third, 

 the striped specimen, a distinct web is present. On the oral disk 

 there are eye-spots. The cartilaginous ring is very faint and has 

 large perforations through the posterior margin. The calcareous 

 ring (Fig. 26. 3) is very characteristic, as it is short and thick 

 with large muscular impressions. It is pure white and the radiais 

 are perforated for the nerves. In the striped specimen there are 

 10 polian vesicles. The two other specimens are not so well pre- 

 served that it is possible to see the number of the polian vesicles. 

 In all the three specimens there is one stone-canal. The gonads 

 are branched and the intestine has a large loop. On the mesenteries 

 there are ciliated funnels of the usual size and shape. 



The calcareous deposits, especially the anchor-plates, are in this 

 species lying more densely than in any other species known. 

 Only in the striped specimen, they are somewhat more spread. 

 The anchors (Fig. 26. 1) measure ca. 230 /li in length and 150 ^ in 

 width. The stock is finely dented and on the vertex there are 

 minute knobs. The anchor-plates (Fig. 26. 2) measure ca. 170 ^ in 

 length and 140 // in width. Their shape is very like that of the 

 anchor-plates in rosetta, the posterior end being very narrow. The 

 articular hole is usually smooth and on the bridge there are irre- 

 gular knobs. In the posterior end there are three small holes. The 

 miliary granules (Fig. 26. 4) are rather characteristic. They are 

 ca. 30 [i large rosettes, which are lying in a dense layer all over 

 the body. 



The specimen from Banda 5. VI differs in several respects from 

 the two other specimens, of which that from off Waling is the type; 



!) The identification of this specimen is not beyond doubt. 



13* 



