86 



50 /i thick not tapering at the apices, cyhndric or a Httle torulose 

 now and then. 



The single specimen found was gathered in the sea west for 

 Water Island at St. Thomas. It was found in a depth of about 30 

 meters. 



That form (my collection nr. 1106) which (1. c. p. 34) I refer- 

 red with doubt to Ai'r. Mazei seems to be an intermediate form 

 showing likeness with several other forms. As I have described 

 in my paper, the specimen in question is rather large, the stipe 

 being about 20 cm. long and the flabellum 8 cm. high and 11 cm. 

 broad ; the margin of the flabellum is irregularly lobed. The fila- 

 ments of the inter- 

 ior of the flabellum 

 are cylindric (Fig. 

 70 a, h) about 50 /^ 

 thick, those of the 

 surface thin about 

 20 // and rather 

 torulose or some- 

 times moniliform. 

 The dried speci- 

 men has a brown 

 olive-green colour, 

 its surface is some- 

 what uneven, very 

 indistinctly zonate ; the consistency is rather firm. In its thicker 

 cylindric inner filaments it agrees with A. Mazei but the variation 

 in size of the filament and the thinner, torulose surface ramuli 

 brings it nearer to Avr. sordida. After the monograph of Mr. & 

 Mrs. Gepp appeared, 1 have shown my specimen to Mrs. Gepp 

 during a visit to London and Mrs. Gepp after a short examina- 

 tion came to the result that the specimen in question most pro- 

 bably was the Avr. canariensis Gepp. Having now again exa- 

 mined the specimen and made a thorough comparison with the 

 description and figures of Mr. & Mrs. Gepp I agree with Mrs. 

 Gepp, that my specimen also shows much likeness with Avr. 

 canariensis, but in one regard it differs essentially from the latter, 

 namely, by the filaments growing thinner towards the surface 

 while they do not taper in Avr. canariensis. 



This specimen was found in a deptli of about 30 meters in the 

 sea west of Water Island at St. Thomas. 

 Geosrr. Distrib. West Indies. 



Fig. 70. Avrainvillea Mazei Murraj' and Boodle. 

 Forma. Compare text. (About 70:1). 



