176 MR JAMES MURRAY ON 



animal belongs is not quite certain. The case does not fit the body very closely, yet 

 does not resemble any other definite organic structure known to me. 



Total length when feeding, 277 to 312 m ; length of head from corona to first neck- 

 segment, 77 M ; diameter of corona, 40 m; length of jaws, 33 m ; of vibratile tags, 12m. 

 Pellets variable in size, some elongate, and up to 18 m long. The pellets, after voiding, 

 were cleared out of the case in the same deliberate way I have described (39) in the 

 case of C. angusticollis. The rump is slightly marked off from the central trunk, but 

 under the strongest pressure no trace of foot could be seen. I do not doubt that it 

 exists, however, as there is often difficulty in getting a hermit-species to display the foot. 

 The five teeth are unusually strong for a pellet-maker, and there are besides the usual 

 striae. The peculiar form of the extensive area (upper lip) between the rostrum and 

 the pedicels will be better understood, and the mode in which it joins with the rostral 

 base better seen, from the figures than from any description. 



In the half-extended rostrum two rounded lobes suggest the lamellae ; but when the 

 tip is most fully everted there is no trace of lamellae, though they were very carefully 

 looked for. No processes were seen on the low conical tip except very fine setae of 

 uniform length, which covered it all over. No central setae were seen on the discs. 



Habitat. — On aquatic mosses from the islands in Loch Morar, 5th March 1905. 



C. aspera, Bryce (5). (Plate IV. figs. 16a to 16c.) 



Its abundance in Loch Ness and district enabled me to study some points in the 

 structure of this interesting species which I have not seen previously noted. The 

 food is moulded into pellets — a character readily overlooked, owing to the thick papillose 

 skin. The large discs are close together, and strongly inclined forward. The apparent 

 motion of the cilia passes uninterruptedly round both discs, as though they were one, 

 as is also seen in C. annulatus, CEcistes, etc. The upper lip terminates in a median 

 conical process, which looks like a ' ligule,' though really of another nature. A similar 

 process is seen in C. pusilla (fig. 126). 



C. crenata, Murray. (Plate I. fig. 4.) 



When described (39), the animal had not been seen feeding. This has now been 

 done, and the corona is figured. The head is relatively very small, and the corona less 

 than the collar. 



C. habita, Bryce (7). 



Apparently a variable animal, but there is a suspicion that several similar species 

 have been confused together. A remarkable variety, probably of specific rank, is 

 described below. 



Lochs Ness, Morar, Treig, Gelly (Evans). 



