COMATULA. 



71 



development, figure 21, and in which the arms had the appearance 

 of bifurcating twice towards their extreme ends, and had become 

 of a sulphur-yellow color, with a zone of dark colored spots along 

 either margin. 



"Another circumstance confirmatory of these being the young of 

 Comatula is derived from these Pentacrini being first seen about the 

 time of the dispersion of the ova of the Comatulce, and again entirely 

 disappearing in September, the only season when young Comatula are 

 to be obtained, and such as are represented in figs. 22, 23. In these 



Fig. 24. 



Fig. 25. 



Fig. 26. 



Figure 24. 

 « 25. 



26. 



Pentacrinus europcBus. A group, natural size. 



The same, magnified ; /, the basis ; e and d, two individuals in early 



stages of growth ; a, b, c, fully developed individuals ; at +, letter a, 



the anus is seen, and below it the mouth of the animal. 

 Part of one of the arms seen in face ; a, ova protruding from the concep- 



tacula ; b, ova just beginning to make their exit; c, one as yet filled 



with the ova ; d, ova magnified. 



the points of resemblance to advanced Pentacrini have been already 

 alluded to, and it is quite evident,, that since they became detached, 

 pinnae must have been added in both directions, both towards the 



