The Crinoids from Dr. S. Bock's Expedition to Japan 1914. 95 



(as is also the case in the preceding and following ossicle). Between 

 I Br 1 and 2 a close articulation. Axillary h = •^,4 br, without a late- 

 I'al flange. II Br — s: 2. Arms XII. 80 mm. Primipostaxillaries basally 

 united inside. Br 2 on the outside twice as broad than on the inside. 



Ex. of syzygies: 8 -f 4. 12 + 13, 17 + 18, 21 + 22.. etc. with 

 an interval of 3 to 4 oblique articulations. 



I\ 19; 4,5 mm. (the 2 first segments strongly enlarged. P* seg- 

 ment h = Vs br with a wing which is broader than the br of the seg- 

 ment, 2" segment h = ^ 2 br with a smaller wing, the following seg- 

 ments slender h=r'/2 br. rather smooth, though angular). P, 17; 7 mm. 

 coarser than P^ (P* and 2'' segments as in Pj but more slightly alated, 

 3'' and the following segments L = 3 — 4 X br. distal segments shortei', 

 with small distal, spiny whorls). P, 10; 5 mm. (only the P* segment 

 with a wing). A wing on the P' segment more and more inconspi- 

 cuous out to Pju or Pjj. Distal p. 15; 7 mm. (P* and 2'" segment a 

 little enlarged L=V2 — ' 1 br, 3'' and following segments L=2 — 2^/2 

 br. Last 4 segments shorter and more delicate, with distal, spiny 

 whorls). Disk thrown off. Ectoparasitical Eulima. 



Sp. 2 (St. 12) C. X 28—31, + H mm. A dorsal spine from the 

 12*'' segment. 



The R — s IR projecting. The carination on I Br 1 and 2 very 

 slight and indistinct. Arms X. 32 mm. Syzygies: 3 + 4, 9 + 10, 13+14 

 etc. with an interval of 3 oblique articulations. 



Pi 21; 5 mm. P., 14+; t> mm., P3 13; 4,7 mm. Distal p. 13 + ; 

 6 lum. 



Disk thrown off. — The specimen sticking to an Acanthogorrjia 

 Dofleni KiJKTH. & Goez. 



The description evidently corresponds on the whole to A. H. 

 Clark's description of AnUdoii tlieiis which is a young form of N. htulti- 

 color. A characteristic in which specimen 1 differs from both the 

 Clarkian descriptions, is a slight medio-dorsal carination of the radiais 

 and the I Br series. 



Possibly the original Clarkian opinion that Calometra and Neo- 

 metra ought to be united in one genus is the right one. The diffe- 

 rence between the two genera, namely that P^ and P^ in Calometra 

 are about as long as the following pinnules, in Neometra considerably 

 longer, scarcely holds good (see the comparison given below). 



