No. 5^.] 49 



■No. 32, Ulva fistulosa. 



Hab. Coast of Isla about Portnahaven : not uncommon. 



2^0. 33. Sporochnus aculeatus. 

 Hab^ Seashores : frequent. 



No. 34. Chordaria viridis. 



Hab. Coast of Isla near Portnahaven : not uRcommon. 



No. 35. Laminahia lingulata. 



Hab. Coast of Isla near Portnahaven : rare. 



No. 36. Laminaria esculenta. 

 Hab. Seashores ; common. 



No. 37. Laminaria digitata. 



Hab. Seashores : frequent. 



No. 38. Semania j'Luviatilis. 



No. 39. Laminaria debilis. 



Hab . Coast of Isla near Portnahaven : not iincomTnon. 



This plant corresponds in every particular with Agardh's original 

 specimens in Dr. HooKBja's Herbarium, and appears to be an un- 

 doubted Laminaria. Perhaps the Ulva plantaginea of Ltngb, the 

 Zonaria plantaginea of A&ardh, will prove to be only an older 

 state of this plant- 

 No. 40. LiCHINA PYGM^A. 



Hab. Marine rocks : not uncommoa. Coast of Isia near Portna- 

 haven, rather rare. 



No. 41. LiCHINA VYGMJEA, /3 MINOR. 



Hab. Marine rocks, a little above highwater mark. Coast of Isla 

 west from Portnahaven : very abtiodant. 



No. 42. FuaCELLARIA iLUMBRICALIS. 



Hab. Seashores : frequent. 



No. 43. Fucus NODOSus. 



Hab. On rocky shores : common^ 



No. 44. Fucus CERANOIDES. 



Hab. Lochgoil. 



No. 45. Fucus BALTICUS. 



Hab. Sandy shores at Brodick Bay in the Isle of Arran. 



No. 46. Fucus SERRATUS. 



Hab. Rocks on the shores : common- 

 No. 47. Fucus CANALICULARS. 



Hab. Rocty shores : common. 



[Senate No. 50.] 4 



