ON NAUTILUS AND SOME OTHER ORGANISMS. 163 
The species is not common, but I have obtained three or 
four examples of it from the lower surface of stones off the 
south-west shore of Rakaiya, in one half to one fathom of 
water. 
The accompanying sketch (Fig. 12) represents a fine and 
typical group of individuals of this species. The members of 
the group are so intimately connected together by the mutual 
fusion of their tests that one would at once suppose that they 
had arisen from a parent stock by budding. Such, however, 
is not the case, since by making incisions it is found that it is 
only a fusion of test-substance, and not a true organic union. 
Moreover sometimes isolated individuals are to be found, as in 
Fig. 18. 
~ 
eas 
- Fre. 13.—Styeloides eviscerans. Outline of isolated specimen. a. 
Atrial siphon. ¢. Processes of test. 
The general colour of the animal or group of animals is a 
characteristic dull reddish brown, the colour being more pro- 
