34« 



ri. oiisniMA : 



The largest of the Misaki specimens reaches i 5 mm. in length as 

 measured after preservation in formalin. This is a size which con- 

 siderably exceeds that of the largest described by CHUN. The 

 smallest of my specimens is of about the same size as the larger 

 ones of Chun's. The peculiar arabesque-like arrangement of ciliary 

 bands is manifestly more complex in all my specimens than in the 

 Orotavan. The large and small lateral lappets bearing ciliary band 

 on the frilled edge, stretch out on each side in two rows, in one of 

 which they are obliquely dorsally inclined and in the other ventrally ; 

 so that the larva in frontal aspect presents a shape which is some- 

 what like an oblique cross or a flattened X. 



In life the body is quite transparent. It bears a light violet 

 tinge along the ciliary bands ; moreover, there are observable 

 numerous small black spots scattered all over the body surface. 

 The spots are most abundant near the margin of the grooves which 

 correspond to the oral and lateral fields of ordinary Auricularia. 

 The same spots are found also on the wall of the oesophagus. 

 Examined under a high power of the microscope, the spots reveal 

 themselves to be minute reddish brown pigment cells of a roundish 

 or irregular shape, which change shape and creep about in an 

 amoeboid manner. 



In the larger preserved specimens I find that the aboral ciliary 

 bands are in the ventral parts discontinuous at several points. I 

 think this is probably merely due to artificial cause, since there 

 exists no symmetry or regularity in the manner of occurrence of the 

 discontinuity. That it does not represent the breaking up of the 

 band preliminary to pupation, is indicated by the unadvançed de- 

 velopmental state of such internal organs as the hydrocrel, the 

 enterocœls, &c. 



The wheel-shaped calcareous deposits (figs. 1 and 2\ which I 

 was able to observe only in the four fresh specimens captured by 

 myself, are distributed exactly in the way shown by CHUN ; only 



