124 Proceedings of the Royal Irish Acade^ny. 



some mistake, and that one of the nearly-related forms may have 

 been confounded with it." 



It is very interesting, therefore, to find that it has again been 

 found from very near the same locality ; so that Professor Allman's 

 identification was, no doubt, correct, and the species possesses a 

 farther southern range than was anticipated. 



Another small colony was also obtained from log 28, off Baltimore, 

 at a depth of 30 fathoms, by the Royal Irish Academy Survey. 



Again, a very large colony, 1 J inches high and If inches broad, 

 was also obtained by the Royal Dublin Society Survey, 54 miles off 

 Achill Head, at a depth of 500 fathoms. 



Localities. — Several Scotch and !North of England localities are 

 recorded for this species. The following are West of Ireland : — 

 Cape Clear (Allman), 5-8 miles west of Great Skellig (Roy. Irish 

 Acad.), Baltimore (Roy. Irish Acad.), 54 miles off Achill Head, at a 

 depth of 500 fathoms (Roy. Dub. Soc). 



2. Retepora couchii, Hincks. 



This is easily distinguished from the former species. The rostrum 

 is very much elongated and recurved, giving the inner surface of the 

 colony quite a hispid appearance. At the end of the rostrum is a 

 minute avicularium ; and, on one side, the peristome is produced into 

 a wing-like elevation. 



All Hincks's specimens come from Cornwall. It has also been 

 obtained from Guernsey by Canon I^orman and Dr. M'Intosh. 

 Hincks regards it as a southern form, it having also been obtained 

 from the Mediterranean and Bay of Naples. It has been dredged 

 from three different localities on the south-west of Ireland by the 

 Academy Survey, and is now recorded for the first time from Irish 

 waters. 



From log 53, 5-8 miles west of Great Skellig, depth 70-80 fathoms, 

 I have received a very considerable quantity of fine colonies. One 

 over an inch in height, and another nearly two inches broad. Hincks 

 gives the height of his largest specimens as only a little over half an 

 inch, and the breadth about three-quarters of an inch. 



The Rev. T. Hincks, who has kindly confirmed me in my identifi- 

 cation of this genus, speaks of these specimens from west of Great 

 Skellig as " very fine examples of the species." 



A colony was also dredged from log 44, 38 miles west, -J south 

 of Dursey Head, at a depth of 108 fathoms, and another from Glan- 

 dore Harbour. 



