73 
the British Marine Algae . 
CHLOROPHYCEAE {continued). 
Ulva L. 
U. latissima, J. A g., E. S. I. 
U. rigida, J. Ag. 9 ! 
Order III.— ulothrichaceae. 
Ulothris Kiitz. 
U. implexa, Kiitz. 415! ( Lyngbya CutleriaelVhyc. Brit.). 
Order IV. — chaetophoraceae. 
Tribe I.— Chaetophoreae. 
a. Trichophorecie. 
Bolbocoieon Pringsh. 
B. piliferum, Pringsh. 9 ! 
Ochlochaete Thw. 
O. Hystrix, Thw. 9 2 ! 
/ 3 . Atricheae. 
Entoderma Lagerh. 
E. viride, Lagerh. 9 ! 
E. Wittrockii, Wille. 4 ! 
Epicladia Rke. 
E. Flustrae, Rke. 4 ! 8 ! 9 ! 
Order V.— cladophoraceae. 
Urospora Aresch. 
U. penicilliformis, Aresch. 4 ! 6 ! 8. 9 ! ( Conferva 
Youngana, Phyc. Brit.). 
U. collabens, Holm, et Batt. 8. (Conferva collabens , 
Phyc. Brit.). 
U. bangioides, 8 Holm, et Batt. 6 ! 9. 
1 Miss Cutler appears to have collected two plants as Lyngbya Cutleriae , see 
Batters’ List Mar. Alg. of Berwick-on-Tweed, p. 36. Since the publication of that 
work Harvey’s type specimen has been unexpectedly found and proves to be U. 
implexa , Kiitz. 
2 Ochlochaete Hystrix, Thw. was not found in frutification, and has not been 
detected in the original locality since its first discovery, so that it is not certain 
whether it should be placed in Chaetophoraceae or Coleochaetaceae. 
3 Urospora bangioides has, we understand, been found by Mr. R. J. Harvey Gibson 
to produce the peculiar tailed spores of Areschoug’s genus, but these have not 
yet been observed in the other species which we have provisionally placed here, 
in consequence of their similarity of habit and growth to U. penicilliformis. 
