EUMENIA. 221 



the dorsal brush are longer than those of the ventral, but do not 

 otherwise differ ; and both brushes come from the skin, and not from 

 a papillose foot. There are no spines. The cirrus or branchial 

 filament is soft and filiform. 



It is necessary to observe that this description is drawn up from 

 the examination of a single specimen, which had grown soft by mace- 

 ration in the spirits, and was somewhat injured by the carriage. 

 Thus the filaments or cirri of several segments were broken away ; 

 and I ought to mention that there were no traces of any on the third, 

 fourth and fifth segments. The specimen was rather more than an 

 inch in length, but, from its structure, the worm is obviously capable 

 of being elongated to a considerable extent. 



Plate XIX. Fig, 11. Travisia Forbesii, of the natural size. 12. The 

 same, magnified. 13. The cephalic segments. 14. A side view of a 

 segment from near the middle. 15. A view of a caudal segment on 

 the dorsal aspect. 16. The same on the ventral aspect. 17. The 

 anal segments. 18. A few bristles. 



3.3. EUMENIA. 



Eumenia, Oersted, Annul. Dan. Consp. 46. Grube, Fam. Annel. 71. 



Char. Body subcylindrical or somewhat fusiform, composed of 

 segments regularly decreasing on each side, each segment three- 

 ringed : mouth inferior ; the anus terminal and without appendages : 

 feet mammillate with fascicles of capillary bristles : branchiae fasci- 

 culate, somewhat ramose, confined to the first six segments. 



1 . E. crassa. 



Eumenia crassa. Oersted, Wiegm. Arch. 1844, 111. t. 3. f. 17, 20 ; An- 

 nul. Dan. Consp. 47. 



Hab. The coralline region. 



Desc. This is a very grub-like worm both in shape, size and colour. 

 The body is divisible into three portions. The anterior is thick- 

 skinned and wrinkled, distinctly annulated, the rings very narrow 

 and composed of about three lesser ones, furnished on each side with 

 two small mammillate setigerous feet merely separated by a deep 

 line ; or, if we consider each ring to have one foot only, on each 

 side, it may be described as biramous. There are fifteen or sixteen 

 feet in this portion ; and on the first six rings, close to and above 

 the feet, there is a small tuft of short curled filaments. There is no 

 head, nor tentacular appendages. The mouth is subterminal, large, 

 puckered, with minute spinules on the under edge. On the middle 

 portion, distinguished by a thin serous skin stained with the contents 

 of the intestine, the feet are similar but wider apart, and there are 

 ten pairs on each side. The annulations are less distinct, and are 

 occasionally obsolete. The tail portion is short, abruptly narrower, 



