Mr. George Tate on the Fame Islands. 235 



than those of the sides ; pygidium, length '25, breadth *35, with 

 sixteen axal and ten lateral segments, a distinct broad margin 

 with faint irregularly bifurcating stria? and minute granulations 

 prolonged into a pointed mucro; both the axal and lateral 

 segments are ornamented with one row of small tubercles, which 

 are more prominent on the axal segments; the mucro is in 

 length usually *15, but in some specimens extends to '2. 



The species allied to G. Farnensis are G. mucronatus and 

 mesotuberculatus of M'Coy, and G. Eichwaldi of Fischer ; but the 

 two latter are rounded posteriorly, and the former has a smooth 

 pygidium, while our species has a mucro, and is ornamented by 

 tubercles. It occurs also at Holy Island, North Sunderland, 

 Budle, Howick and Denwick. The tail of this trilobite was 

 figured by Dr. Buckland in his Bridgewater Treatise, but under 

 the wrong name of Asaphus caudatus, which is a Silurian species. 



BOTANY. 



The Botany of the Fame Islands affords but little that is 

 peculiar, less indeed than might have been expected, as on 

 basalt, in other localities, the rarest of our indigenous plants are 

 found. No trees grow upon the islands, and it is remarkable 

 that no Fern nor any of its allies is seen there. There is, how- 

 ever, little shelter for the more delicate vegetable productions. 

 The plants which are most abundant are such as delight in a 

 marine habitat ; the Silene maritima adorns several of the islands 

 with its white flowers, and the pretty little pink Glaux maritima 

 spreads along the sea margins. The plants of greatest rarity are 

 Cochlearia Danica and Chenop odium botryoides, which has only 

 recently been noticed as a Northumberland plant. The total 

 number of indigenous species observed is sixty-two, which are 

 given in the following list, the materials for which have been 

 chiefly furnished by my son, Dr. G. R. Tate : — 



PLANTS. 



Class DICOTYLEDONES. Order Caryophyllk*. 



Order Ranunculaceje. 



Silene maritima. 



Sagina maritima. 



Ranunculus acris. Fame, Wedom. procumbens. Wedom, Foss. 



repens. Fame, Wedom. Stapel. 



Alsine marina. Longstone. 



Order Crucifer*. Stellaria m f} a , Farn °' Sta Pg' 



berastium triviale. rarne, Toss. 

 Cochlearia officinalis. Stapel. 



Danica. Farne,Wedom, Foss., atrovirens. Fame, Foss. 



Stapel. Stapel. 



Cakile maritima. Wedom, Northern semidecandrum. Fame, Foss. 



Hares, Noxes. Stapel. 



t2 



