THE SYNAPTID/E OF JAPAN. 



473 



This species is fairly well distinguishable from the preceding by 

 the following characteristics. Length of anchors 86-140 /z nearly 

 always shorter than wide ; each arm of anchor with one or two 

 large teeth near end, which very offen assumes bifurcate appearance 

 on their account ; handle of anchor fan-shaped, instead of T-shaped ; 

 anchor-plates irregularly quadrangular, 86-125 fi long, commonly with 

 a pair of large holes near centre ; miliary granules not X-shaped, but 

 are cup-shaped buttons, 30-50 /i in diameter, each perforated by 3-10 

 holes ; in the radii there are found deeply imbedded smooth, oval 

 granules, 20 fi in diameter. 



The species has before been reported from Miya Bay (v. Maren- 

 zeller) and from Misaki (Britten). Britten's statement that it is known 

 from Amoy through Ludwig is a mistake, probably based on confound- 

 ing the species with the preceding. 



7. Prot an kyr a aculeata (Théel). 



Synapta aadeata Théel, Challenger Holothurioidea, part 2, 1886, 

 pp. 13-14; pl. I, figs. 2 a-f. 



Protankyra aculeata Ostergren, Das System der Synaptiden, 1898, 

 p. 117. — Clark, The Apodous Holothurians, 1907, p. 104. 



Since a fragment was obtained by the " Challenger " at her 

 Station 232, Sagami Bay, no other occurrence has been recorded. 



8. JProtankyra kagoshimensis Ohshima. 



Protankyra kagoshimensis Ohshima, Albatross Holothurians (m.s.). 

 This species is known only from the " Albatross " Station 4945, 

 Kagoshima Bay, Kyushu. 



9. Anapta ludwigi Britten. 



Anapta ludwigi Britten, Holothurien a. d. japan, u. ochotsk. 

 Meere, 1907, pp. 152-153. 



This form known from Southern Saghalien is represented in the 



