Mr. Montagu's Description of Terehella, ^c. 341 



after a storm : thus, from the fragility of their tubes, these animals 

 are often found at large. When in their tubes, generally but a 

 small part is protruded, excepting the capillary tentacula, with 

 ■which they seem to be searching for food in every direction by 

 thrusting them into cavities of shells, under stones, &c. 



The branchial appendages are usually coloured with orange or 

 red whilst the animals are alive and in health, but lose their colour 

 as they become weak or sickly, which probably arises from lan- 

 guid circulation. 



The mouth is in front, and the under-lip usually projects so as 

 to make the opening upwards. 



i^ll the species inhabit the sea. 



Spec. 1. Tekebelia gigantea. 



Tab. XI. 



T. with seventeen pairs of exserted fasciculi and eight dorsal 



plates. 

 Body long, with numerous articulations furnished the whole 

 length with peduncles, and a few with fasciculate bristles; but 

 the seventeen anterior joints have the fasciculi most conspi- 

 cuous, being always erected, and remaining so after death: 

 the first eight joints have a broad plate on the back different 

 in structure from the rest; they are of a rufous-brown colour, 

 shaded with purplish-black, continuing down the back in a de- 

 creasing line. The general colour of the other parts is yellow- 

 ish. Beyond the seventeen first joints the peduncles are very 

 small, and appear to be destitute of fasciculi ; and they incline 

 gradually from the sides to the back, till towards the extremity 

 they almost meet, forming two dorsal lines : near the mouth 

 originate numerous capillary appendages, that are five or six 



^ i' ^ inches 



