54 COLLINS AND HERVEY. 



Island, April, Collins; Pink Bay, Spanish Point, March, Hervey. 

 In habit much like Batophora Oerstedi var. ocddentalis, but growing in 

 more sheltered places. 



BATOPHORA J. G. Agardh. 



B. OERSTEDI J. G. Agardh. 1854, p. 108; Collins, 1909, p. 383, 

 fig. 145; Borgesen, 1913, p. 73, fig. 58; P. B.-A., No. 1910. Fairy- 

 land, July, with ripe aplanospores, Collins. 



Var. OCCIDENT ALIS (Harv.) Howe, 1905a, p. 579; Collins, 1909, 

 p. 384; P. B.-A., No. 2016; Dasycladus occidentalis Harvey, 1858, 

 p. 38, PI. XLI. B. Rein; Spanish Point, June, Howe; Shelly Bay. 

 Dec., Hervey. A condensed form, growing in more exposed localities. 



FAMILY CODIACEAE. 



CODIUM Stackhouse. 



1. Prostrate. 1. C. intertextum. 



1. Erect. 2. 



2. All divisions contracted at base, enlarging upwards. 



4. C. isthmocladum. 



2. No distinct contractions at base of divisions. 3. 



3. Peripheral utricles 100-150 ^ diain., exceptionally 200 /j.. 



2. C. tomentosum. 

 3. Peripheral utricles rarely under 300 n- 3. C. decorticatum. 



1. C. intertextum sp. nov.; P. B.-A., 2018. Fronde prostrata, 

 tereti vel complanata, saxo arete adhaerente, apicibus autem vulgo 

 liberis; ramis brevibus, irregularibus, stratum subcontinuum for- 

 mantibus, strato interiore siphonum dense implicatorum strato 

 corticali cincto, utriculorum longorum, cylindricorum vel subclava- 

 torum, apicibus truncatis, subrotundatisve, diam. 70-90 (JL; colore 

 atroviridi; substantia subfirma, nee maxime gelatinosa. 



Frond prostrate, subterete or flattened, closely adherent to the rock, 

 but with tips usually free; with short, irregular branches, forming an 

 almost continuous coating. Interior layer of densely packed, slender 

 tubes, surrounded by a cortical layer of long, cylindrical or somewhat 

 clavate utricles, with truncate or somewhat rounded ends, 70-90 fj. 

 diani. Color dark green, substance rather firm, not specially gelati- 

 nous. Forming a continuous belt a few dm. wide on upright or 



