264 



The anchors (Fig. 49. 8) measure from the point of the long 

 arm to the handle ca. 390 /<. The long arm is as Semper writes 

 usually quite smooth, but a single little tooth may occur. On the 

 short arm there are some few (5 — 8), very irregular teeth. Also 

 the handles are asymmetrical (Fig. 49. 7), their larger part being 

 always on the same side of the stock as the short arm. 



There are two different sorts of miliary granules in the prepa- 

 ration at hand. The one (Fig. 49. 9) is rather thick cross-shaped 

 bodies. The knobs on the ends of their arms are so large that the 

 arms are semingly branched in the ends. The size of these bodies 

 is ca. 25 //. The other sort is nearly circular granules (Fig. 49. 10) 

 measuring 10 — 12 in diameter. 



This species is known only from Amboina, and nobody since 

 Semper has met with it. That it is a valid species seems rather 

 certain, but since the type is still unique, it is posible that this 

 curious species may ultimately prove to be an abnormal specimen 

 of another species. 



Protankyra autopista (v. Marenzeller). 



Synapta autopista v. Marenzel 1er. 1881. Neue Holothurien von Ja- 

 pan und China, pag. 223, Pl. IV fig. 3. 

 „ „ Lam pert. 1885. Die Seewalzen, pag. 222. 



Th é el. 1886. The "Challenger" Holothurioidea. p.32. 

 „ „ Mitsukuri. 1896. A list of Holothurians. 



Protankyra autopista. 0stergren. 1898. Das System der Synaptiden. 

 pag. 117. 



Synapta autopista. Britten. 1907. Holothurien aus dem japanischen 



und ochotskischen Meere, pag. 149. 

 Protankyra autopista. Clark. 1908. The Apodous Holothurians. pag. 103, 

 Pl. V fig. 31. 



„ „ Ohshima. 1913. Synaptiden von Misaki. pag. 



505, fig. 6. 



„ „ Ohshima. 1914. The Synaptidae of Japan, p. 472. 



Misaki. 28. IV. 1814. The shore. 7 specimens. 



The specimens are in the exterior rather like bidentata, only 

 they are a little reddish, and, as the specimens at hand of biden- 

 tata, they are rather stiff, though the body-wall is so thin that the 

 intestine is seen through it. The specimens at hand measure 14—17 

 cm in length, though they are all lacking the "head" with calca- 

 reous ring and polian vesicles. Pr. autopista is said to have twelve 



