240 



This species is especially characterized by the shape of the 

 calcareous ring, the anchor-plates and the rods from the skin and 

 the tentacles. 



Fig. 41. Calcareous rings, rods and ciliated funnels of Patinapta lœuis 1—4 

 and Patinapta ooplax 5—11. 2 & 6 rods from digits, 4 & 7 from tentacle-stem, 

 8 & 10 from the ambulacra. 1 & 5 x 24; 2-4 & 6-10 X 450; 11 X 100. 



The measurements of the anchors and plates found in the lit- 

 erature are so deviating that it may be the better course to collect 



