294 Capt. Portlock on the Natural History of 



Eolis lineata. — Body slender, transparent white, with three 

 opake white lines running from head to tail; viz. one on the 

 back bifurcating into the oral tentacles, and one on each side of 

 the body below the papillae. Dorsal tentacles rather long, linear, 

 transparent white, with an opake white line down the back of 

 each. Oral tentacles about the same length as the dorsal ones, 

 linear, and swelling a little at the base. Branchiae rose-coloured, 

 with a line of opake white in front of each, terminating in a 

 ring at the top. They are nearly linear, tapering a little above, 

 and set in about four ill-defined clusters on each side of the back ; 

 the first clusters contain twelve to fourteen papillae each, the rest 

 fewer. Foot slender, with the front angles produced into short 

 tentacular processes. Length upwards of a quarter of an inch. 



Discovered by Mr. D. Landsborough, jun., among the rocks at 

 Saltcoats, Ayrshire. 



Eolis Landsbergii. — Body very slender, of a beautiful violet 

 or amethyst colour. Dorsal tentacles slender, linear, violet tipped 

 with white. Oral tentacles a little longer than the dorsal pair, 

 and of the same colour. Branchiae orange-red, the sheaths vio- 

 let, with a ring of white at the apices ; elliptical, short and rather 

 stout, arranged in five or six clumps ; the first containing eight 

 to twelve papillae, the second six to nine, the others not so many. 

 Foot very narrow, finely pointed behind, arched in front, and 

 with the lateral angles not much produced. Length rather more 

 than a quarter of an inch. 



Also found by Mr. D. Landsborough at Saltcoats. 



EXPLANATION OF PLATE IV. 



Figs. 1, 2, 3. Different views of the Limapontia taken at Torbay. 



Fig. 4. Enlarged view of the anus. 



Fig. 5. Enlarged view of branchia. 



Fig. 6. A portion of the gizzard exhibiting the teeth. 



Fig. 7. Auditory capsule and otolithe. 



XXX. — Notices in connexion with the Natural History of Corfu 

 and its vicinity. By Captain Portlock, Royal Engineers, 

 E.R.S.* 

 An insular position must in most cases render it difficult to de- 

 termine the fauna or the flora of a country in respect to their 

 actual limits, and especially the fauna, as the slightest variation 

 in the periodical directions of the currents, whether aerial or ma- 

 rine, may lead to the appearance of new objects both of the vege- 

 table and animal kingdoms. 



In the 12th volume of l Annals of Natural History ' is printed 

 a valuable paper by Capt. Drummond, 42nd R.H. regiment, with 



* Read at the Meeting of the British Association, Sept. 14th, 1846. 



