239 



? Leptosynapta ooplax. Clark. 1924. The Synaptinae. pag. 489. PI. 7 

 fig. 20—24. 



Samalona, Makasser. 28. VI. 1922. Sandy shore. 82 specimens. 



The specimens at hand measure up to 20 cm in length by ca. 

 0,5 cm in diameter. The colour is pure white and the skin is thin 

 and translucent. There are twelve tentacles, each with 4 — 5 pairs 

 of digits and two irregular rows of sensory cups. Eye-spots are 

 wanting. The calcareous ring (Fig. 41. 5) is rather stout and the 

 radial pieces are perforated for the nerves. A cartilaginous ring is 

 wanting. There are 2 — 8 polian vesicles and a single unbranched 

 stone-canal. The intestine is straight and the oesophagus not distinct. 

 The ciliated funnels (Fig. 41. 11) are found on the body-wall. The 

 gonads are long and thin and but a few times branched. The genital 

 duct opens on a distinct papilla between the dorsal tentacles. 



The anchors from the posterior end of body (Fig. 41. 1) measure 

 from 150 to 190 // in length. The stock is unbranched, but di- 

 stinctly toothed. The arms are short and curved, being usually 

 quite smooth. The anchors from the anterior end (Fig. 42. 3) 

 measure ca. 160 ^ in length by 110 (i in width. The stock is 

 toothed and on the stout and nearly triangular arms there are 

 some few irregular teeth. The anchor-plates from the anterior end 

 of body (Fig. 42. 4) measure ca. 130 // in length and 100 jti in 

 width. They have 15 — 25 holes in the anterior end, and the cen- 

 tral holes, which are the largest, are usually toothed. The articular 

 end may be hollowed and often perforated with a varying number 

 of small rounded holes. A well defined bridge is wanting. The 

 anchor-plates in the posterior end of body (Fig. 42. 2) measure ca. 

 80 ii in length. They are irregularly shaped and usually much 

 reduced. The miliary granules are found in both the radii and 

 the interradii. Those from the interradii (Fig. 41. 9) are irregular 

 rings or curved rods. In the radii there are two different sorts, 

 one in the skin (Fig. 41. 8) being regular rings, and one in the 

 longitudinal muscles (Fig. 41. 10) being curved rods with perforated 

 ends. The rods in the tentacle-stem (Fig. 41. 7) are rather large 

 and slightly curved. Their outline is smooth and their ends are 

 perforated. Those in the digits (Fig. 41. 6) are larger, and often 

 branched. Their ends are perforated, and often with more than 

 one hole. 



