167 



miliary granules, I suppose it the better course to refer them to 

 this species. The peculiar shape as well as the rough surface of 

 the deposits in SI u iter's specimen is, as Clark writes, evidently 

 due to dissolution. 



Synaptula recta (Semper). 



Synapta recta. Semper. 1868. Die Holothurien. pag. 14, Pl. IV fig. 2-3. 

 Chondrocloea recta. 0stergren. 1 898. Das System der Synaptiden. p. 1 1 4. 

 Synaptula recta. Clark. 1908. The Apodous Holothurians. pag. 84. 

 „ „ Clark. 1921. The Echinoderms of the Torres Strait. 



pag. 160. 



Clark. 1924. The Synaptinae. pag. 475, Pl. I fig. 13, 

 Pl. Ill fig. 9. 



Vatek, opposite Toeal. III. 1922. Rocky shore. 2 specimens. 



The specimens at hand measure 31 and 40 cm in length and 

 their tentacles are ca. 1,5 cm long. The colour is bright reddish- 

 grey with white spots, due to large heaps of miliary granules. They 

 have 13 tentacles and ca. 20 pairs of much contracted digits, which 

 are not united by a web. On the oral disk there are faint eye-spots. 

 The cartilaginous ring is large and nearly quite encloses the cal- 

 careous ring. Close to its posterior margin there are some small 

 perforations. The calcareous ring (Fig. 16. 4) is pure white and the 

 posterior margin of the pieces is nearly straight. The radiais are 

 perforated for the nerves. There are many polian vesicles of different 

 size and a single stone-canal. The gonads are rather voluminous and 

 branched several times. The intestine has in both specimens a large 

 loop, and on the mesenteries there are ciliated funnels of the usual 

 size and shape. 



The anchors and plates are of nearly the same size in both ends 

 of body, but the anchor-plates are very varying in shape (Fig. 17. 

 3-8). The anchors (Fig. 16.6) measure ca. 330^ in length and 190 fi 

 in width; and the anchor-plates measure ca. 240 [i in length and 

 170 ii in width. The anterior margin of the articular hole is always 

 serrate and on the bridge there are numerous knobs, usually rather 

 large but of varying size. Often the bridge is malformed (Fig. 17. 

 7-8) with large projections, which are usually fastened to the margin 

 of the articular hole. The number of small holes in the posterior 

 end of the anchor-plates is varying. The miliary granules (Fig. 16. 5) 

 are rosettes with a diameter of ca. 20 fi. 



