176 K. MITSUKXIEI : STX'DIES ON 



shaded papillae ; in alcohol, uniform grey with slightly darker 

 papilla?. Pedicels in three longitudinal bands, the middle band 

 twice as broad as the lateral band. Scattered among these 

 pedicels numerous dark spots which look indented. These are 

 probably small pedicels or papillas. At the lateral edges large 

 conical papilla? in a row, 7 — 10 mm. in height, 17 or 18 in 

 number. Smaller papillae of various sizes scattered all over the 

 dorsal surface, tlio tallest of these being very much smaller than 

 the lateral papill.is. In specimens observed in life, some of the 

 tailor of these dorsal papilla? were arranged in a more or less 

 irregular double rOAv along each of the two dorsal ambulaci-al 

 lines. Smaller papilla? were scattered all over the dorsal surface. 

 In some specimens, these smaller ones were more or less in a 

 straight line along the lines of the taller papilhi? (dorsal nmbula- 

 cral), so that longitudinal lines of black dots were noticeable, 

 especially when contracted. In other specimens no such arrange- 

 ment could be observed. Around the subventral mouth, a crown 

 of tentacles, surrounded by a membrane fringed with 25 or more 

 medium- sized papillfe, these being more conspicuous on the dorsal 

 and lateral parts and rudimentary on the ventral part of the 

 membrane. xVnus terminal, subdorsal, with some large papilla? in 

 the neighborhood. 



Genital bundles two. Stone-canal attached to the mesentery. 

 INIadroporic body as usual, near the opening in the mesentery- 

 opposite the middorsal interradial piece of the calcareous ring. 

 Polian vesicles variable in number. In one (No. 1054) there are 

 four, of which one is large, two middle-sized, and one small. In 

 another (No. 1053) only one. In a third (No. 1332) two large 

 vesicles miited at the base into a single tube. Calcareous ring as 

 given in textflg. 31«. Both radial and interradial pieces of the 



