2 A CATALOGUE OF THE BRITISH MARINE ALG 
inspection of the list of their recorded stations. This is especially 
the case with the Myzophycee, the microscopic species, and those 
which were formerly regarded as merely varieties of some other 
species. et 
With regard to the nomenclature, I have tried to bring it more 
into accord with that adopted by all algologists on the Continent of 
ment, without stating to which of the three editions of that work, 
which had then appeared, they refer; on the other hand, Stack- 
house’s Nereis is treated as if none of it had appeared before 1801 
(the date of the completed work), whereas in reality it was pub- 
lished in three parts, which were respectively issued in 1795, 1797, 
and 1801. Similar instances might be given to almost any extent. 
Later authors followed the lead of the earlier ones, and now, when 
date of publication is of such importance in matters of nomen- 
clature, the practice has given rise to much confusion. 
Orpen MYXOPHYCEZ Srizens. 
amily I. Coccocgonza Thur. 
Tribe I. Curoococcacrm Rabenh. 
Gen. 1. Curoococous Nig. 
C. turgidus Nig. Norfolk coast (Yarmouth). Probably common. 
Gen. 2. Apnanocapsa Nig. 
A, marina Hansg. Coasts of Northumberland (Berwick), Dorset 
(Swanage), and Essex (Clacton). Probably common. 
Gen. 38. Guaocapsa Nag. 
G. crepidinum Thur. Coasts of Yorkshire (Scarborough), North- 
umberland (Berwick), Essex (Southend, Clacton), Sussex (Bognor, 
Worthing), and Dorset (Weymouth); Wales (Point of Ayr); Scot- 
land (8. Connel, Argyleshire). Probably common. 
Gen. 4. Oncopyrsa Ag. 
O. marina Rabenh. Coast of Dorset (Swanage). Rare. 
Gen. 5. Awacystis Menegh. 
A, parasitica Kiitz. (= Polycystis pallida Holm. & Batt. Rev. List). 
Coasts of Northumberland (Berwick), Dorset (Weymouth), and 
Devon (Sidmouth). Probably common. 
Gen. 6. Apnanorurce Nag. 
A, pallidaRebenh. Dorset coast (Weymouth). Probably common. 
