NATURAL HISTORY SOCIETY OF GLASGOW. 333 



undergone any trituration in the gizzard, it remains for us to 

 suppose either that the duck, after picking up the shells in the 

 Mediterranean, had flown direct to Skye, and was then immedi- 

 ately shot, or else that the shells must have been picked up by 

 the bird near the spot where it was killed. The Long-tailed 

 Duck has very rarely been met with in the Mediterranean, its 

 principal habitat being the northern shores; and taking all the 

 circumstances into account, I think we may allow this bird the 

 undoubted credit of being the means of bringing to light the 

 fact that this shell, hitherto known only as Mediterranean, be- 

 longs to the fauna of the British seas. 



II. — Notes and Observations on Injured or Diseased Crinoids, also some 

 Short Notes on Fossils. Communicated by Mr John Young, F.G.S. 



[ Second Paper. ] 



In a short article (read 25th April, 1876, Vol. Ill, p. 91), 

 descriptions of a series of tumid or barrel-shaped crinoidea, 

 essentially bearing on the various aspects presented during repair 

 of injury and relative phenomena, were given. In prosecuting 

 this subject further, many confirmations of the previous observa- 

 tions were seen, and a few varieties were noted which, perhaps, 

 may be usefully recorded. 



Of the specimens referred to, short descriptions follow : 



1. A well-preserved specimen of half an inch long, — 3 lines 

 diameter at one end, and 4 lines at the other, — attracted notice, 

 as it seemed to have been disturbed in its natural growth. There 

 was, however, no thickening of the apparently involved ossicula, 

 no enlargement of surface ornamentation, no staining of stem, — 

 indications, which, when present, may be pronounced pathog- 

 nomonic of injured and healing stems. On this account it was 

 about to be thrown aside, when a small neat patch on the stem 

 was observed. This patch was of one piece — not traversed by the 

 separation lines of the individual ossicles, although bearing the 

 same granular character of surface markings. 



On examination it appeared to be a specimen of a completely 

 healed-up scar of a broken off branch, — not by attempted re- 

 production, but by a simple filling up of the gap and its angles, 

 presenting a small elevation on the stem. 



2. The above observations brought to memory a little detached 



specimen, rounded on one side, and flat, bearing joint radiations, 

 VOL. III. X 



