In The foregoing I have- confirmed , in an ophiurid, 

 the conclusions drawn by GOTO from his studies on a 

 star-fish. In hie work on the development of Asterias 

 pallida GOTO(V) thought he was able to prove the coin- 

 cidence o5 bilateral symmetry, which obtains in the 

 adult star-fish, with the plane of bilateral symmetry 



of the bipinnarian and brachiolarian larvae . 

 ofthe relation 

 The study of larva to sdult in the star-fishes 



A 



ie made most difficult however, by the independent 



origin and subsequent twisting of the parte of the 



' star. At the time of their origin no two parts of 



the star bear the same relation to the larva. The 



relation of each part to. the larva also changes as 



■ 

 metamorphosis proc:eds. 



The facte just enumerated admit of ether conclu- 

 sions than those deduced by GOTO and no two investi- 

 gators have reached the same conclusion. IThe point 

 cf view from which the subject has been approached 

 is not the same in all cases but the results oitltned 



by those who have studied the question frro einps.bl .e 



QdtrmAk 



ho vr eve s ? of being reduced to the same basis, that is:- 



.anes^bilateral symmetry in larva 



the relation of the pis 



A 



and.aadult . - 



CUENOT (f.) in hie latest work denies the exist- 

 ence of any known relation between them. 



