222 



Port Jackson. 7. IX. 1914. Shark island. 3 specimens. 

 Port Jackson. 20. X. 1914. Rocky shore. 1 specimen. 



The three specimens from Shark Island are only some very 

 contracted fragments, but they agree, in the shape of the calcareous 

 deposits, rather well with the specimen from 20. X. 1914. 



This specimen, which is nicely preserved, measures 7,5 cm in 

 length, and its colour is pale yellowish-white, seemingly quite with- 

 out reddish pigment. It has twelve tentacles, and each tentacle has 

 6 — 7 pairs of digits and 15 — 20 sensory cups. The calcareous ring 

 (Fig. 35. 4) is well developed, and of a very characteristic shape. 

 The radiais are perforated for the nerves. A cartilaginous ring is 

 wanting. There are four vesicles and a single unbranched stone- 

 canal. Oesophagus is long and thin and distinctly different from 

 the voluminous folded intestine. The ciliated funnels are found on 

 the body-wall, and are as the funnels in inhaerens fan-shaped. The 

 gonads are branched and the genital opening is on a low wart-like 

 papilla in the dorsal interambulacra, a little behind the tentacles. 



The anchors in the posterior end of the specimen (Fig. 34. 1) 

 are ca. 250 /j, long and 110^ wide. The arms are long and slender 

 and serrated with 4 — 6 large and regular teeth. The anchors from 

 the anterior end (Fig. 34. 2) are shorter and thicker and the ser- 

 ration on the arms is not so regular as it is on the large anchors. 

 They measure ca. 180 ^ in length and 100 fi in width. The anchor- 

 plates (Fig. 34. 3-4) are in the two ends of the specimen of very 

 nearly the same size. They measure ca. 150 (i in length and 100 /a 

 in width. The seven large holes in the anterior end are always 

 toothed. In the articular end there are besides the side-holes three 

 small rounded holes as well as a long and narrow medial one. In 

 the bridges across the side-holes there is often a single, little, 

 rounded or triangular hole. The rods in the body-wall are some- 

 what different in the two ends of the specimens. Those in the 

 posterior end (Fig. 35. 3) are more scattered and not so distinctly 

 bent as those in the anterior end (Fig. 35. 5). The rods in the 

 digits are different from those in the tentacle-stem. They are large 

 and nearly straight (Fig. 35. 1). Their ends are enlarged and either 

 perforated or slightly branched, and their outline is either undulating 

 or supplied with large knobs. The rods in the tentacle-stem (Fig. 

 35. 2) are more slender and nearly smooth. Their ends are enlarged, 

 and as those of the digital rods either perforated or branched. 



