280 CATALOGUE OF THE MARINE ALG.E 



Near Berwick. — Dr. Johnston. I do not know on what grounds 

 Dr. Johnston includes this species in his '• Flora/' seeing that 

 it is said to be parasitic only on Gystoseira fibrosa — a plant which 

 is not a native of our coast. — N. 



3. E. SCUTULATA, Buhj. Harv. Man., p. 50. Phyc. Brit., t. 333. 



Atlas, PI. XVI., fig. 65. Johnst. and Or., vol. 



iii.,p. 131. E. Bot., t. 2311. 

 Parasitic on the thongs of Himanthalia lorea. Newbiggen — 

 G. S. B. Though somewhat uncomely to the naked eye, few 

 Alg£e form more interesting or beautiful microscopic objects than 

 this. Its shield-like tubercle is composed of exquisitely delicate 

 fibres, among the outer extremities of which are ranged the cha- 

 racteristic large oblong spores ; and from among these rise at 

 intervals the proper filaments of the plant. It is said to be 

 sometimes difficult of distinction from the following species; but 

 this can scarcely be the case, except with dried or ill-grown 

 specimens. The two plants are often found intermixed as at 

 Newbiggen. It is remarkable that, though Himanthalia is com- 

 mon on the Northumberland coast, these Elachistce seem to be 

 rare. The above is the only locality where I have succeeded in 

 finding E. scutulata. — N, 



4. E. VELUTIXA, Fries. Harv. Man., p. 51. Phyc. Brit., t. 28, 



B. Atlas, PI. XVI,, fig. 67. Johnst. and Cr., 

 vol. iii., p. 135. 

 Parasitical on the thongs of Himanthalia lorea. Newbiggen 

 and Whitley rocks.— 6^. .S'. B—^, D. 



22. MYRIONEMA, Grev. 



1. M. PUNCTiFORME, Harv. Harv. Man., p. 51. Phyc. Brit., 

 t. 41, B. Atlas, PI. XVL, fig. 70. Johnst. and 

 Cr., vol. iii., p. 141. 

 On Pohjsiphonia urceolata, near Seaham harbour. — April, 1859. 

 —G. S. B.—B. 



