258 ART. 7. 1. IJIMA : HEXACTINELLIDA, IV. 



which is figured, should have possessed on one side of the lower 

 part a tube-like branch opening in a wide orifice at its extremity; 

 directly below it a small cœcal protrusion or boss ; and just above 

 the solid base a small round perforation in the body-wall. What- 

 ever may be the nature of the last mentioned perforation, there can 

 be no doubt about that of the tubular branch open at the end and 

 of the ctecal boss. The latter w^ould after a time have developed 

 an osculum at the blind end, like the older bud just above it. 



The specimen of text-figure 10 bears three daughter-persons. 

 The lowest, of a long tubular and chimney-like appearance, is 

 without doubt the first formed (O2). As the second formed I 

 consider the uppermost, a great part of which had evidently been 

 torn off and lost, leaving an irregular gap in the w^all (O3). 

 Between the above two is the third tubular bud (O4) which is 

 open at the end and is of a comparatively small size ; this I 

 regard as the one last formed. 



Another specimen was essentially similar to the last mentioned 

 except in the fact that it showed a distinct trace of the fourth 

 bud which had been torn off. If it be justifiable, as in a great 

 measure I think it is, to infer the order of successive formation 

 from the relative caliber of the buds, then the lowest situated 

 and by far the largest of them all is the oldest ; the one directly 

 above it, the third ; next above comes the second ; while the 

 uppermost is the fourth and last formed. 



A specimen with five well-preserved buds is distinctly bent 

 in the sagittal plane. On the body-edge which formed the greater 

 curvature the tubular buds are arranged in a row, after the 

 manner of glove-fingers. Counting from below upwards, the first 

 (the lowest) bud is very long, cbimney-like and open at the end ; 

 this is probably the oldest daughter-person. The second resembles 



