MISCELLANEA. 61 
resembling a shepherd’s crook. The lower or bare portion of 
the stem occupies about a fifth of the length. This part is 
fusiform, swelling a little in the centre and ending in a blunt 
point. Above this the polyp-cells commence in pairs, increasing 
in number as they ascend. ‘They are sessile as in Pavonaria, thus 
forming a link between that genus and Virgularia. The animal 
is stated to be a bright red when alive.—Joshua Alder, New- 
eastle-on- Tyne, May 13, 1860. 
Note on the local species of Poylgonum.—My. J. G. Baker lately 
forwarded to Mr. Boreau for me, three strongly marked forms 
of Polygonum aviculare, which he announces to be three of the 
“segregate” species of the continental botanists, P. rurivagum, P. 
arenastrum, and P. microspermum. <A fourth form which Mr. 
Baker sent from Yorkshire, and which, I think, I have also seen 
here, is referred by Mr. Boreau, doubtfully to P. agrestinum. It 
would be well if our botanical members would collect in their 
rambles, and preserve any marked forms of P. aviculare, for 
further examination.—Alfred Merle Norman, Sedgefield, May 3, 
1861. 
Agius punctilucens (D’Orbigney) and Eolis Northumbrica 
(Ald. and Han.) at Cullercoats—Accompanied by Mr. Mennell I 
spent a few hours among the rocks at Cullercoats, on the eleventh 
of last month. Our dips into the pools were rewarded by finding two 
or three very interesting crustacea, which will hereafter be noticed; 
and our stone-turning by the discovery of Mgirus punctilucens, a 
Nudibranch new to our coasts, and two specimens of Hols 
Northumbrica. Only one example of the latter species was pre- 
viously known; that was also taken at Cullercoats by Mr. A. 
Hancock, but on a coralline from deep-water, while ours were 
under a stone between tide-marks, apparently making their 
dinner on Halichondria (incrustans?)—Alfred Merle Norman, 
Sedgefield, May 3, 1861. 
Nudibranchiate Mollusca, at Cullercoats—Accompanied by 
Mr. A. Hancock, I again visited the rocky bay north*of Culler- 
coats, a few days after my visit with Mr. Norman, described in 
the preceding paragraph. On this occasion an olive variety, 
previously unnoticed, of Holis gracilis was taken, as well as speci- 
VOM Vice beh s H 
