556 TRANSACTIONS AND PROCEEDINGS OF THE 



there arise cell filaments which, as thev pass outwards, 

 give rise to constantly increasing ramifications, the upper 

 branches of which become intimately coherent. In 

 Gloio'peltis there arises in this manner a firm, closed thallus 

 surrounding a tubular internal cavity, through the centre 

 of which runs the axis. In Endotrichia, on the other hand, 

 this cavity becomes subsequently filled with rhizoids, 

 which grow out from the inner side of the wall. 



The form of the sporangia is identical in the genera, 

 but there is a slight difference in the structure of the 

 cystocarps.^ 



Of the species of the above-mentioned genera specimens 

 of Gloio'pdtu furcato. (Post et Eupr.), J. Ag., in fruit reached 

 me for the first time in the summer of 1884, in Japan. 

 I found the structure of the thallus to correspond with 

 Suringar's description, but the exact explanation of the 

 fruit structure caused me some difificulty. The fruits 

 which I examined corresponded throughout to the " cysto- 

 carps " which Suringar had figured, but it was in vain 

 that I sought for procarps. 



Somewhat later (1885), I obtained for examination 

 from the Berlin Herbarium a larger supply of material of 

 Gloiopeltis. This consisted in part of a number of unde- 

 termined Algae, crushed together as they ^ome into the 

 Japanese market under the name " Funori ; " in part of 

 isolated and named specimens of the same species of Algae; and 

 finally of the original specimens of Gclidiv.m rigens, ]\Iertens." 



On a closer examination of this material I found in 

 it numerous specimens of Endotrichia cervicornis, Sur., with 

 which the Alga described by Mertens^ as Gclidiv.m rigens 

 has proved to be identical,'^ as well as numerous specimens 



^ Suringar (Alg., Japon, p. 33) says of the cystocarps of Endoirichia 

 ' Cystocaipium quod in ceteris cum illo Gloiopeltidis convenit, in hoc 

 tamen ab eo discedit, ut nucleus, intra frondis spatium pjericentrale 

 ramello axis impiositus, ab utraque parte strato peripherico integro 

 obtegatur neque ex uno latere frondis in ipsum illud stratum immersus 

 sit."' 



* Ostasiatischen. Algen, p. 118. 



3 L.c. (1866). 



*Grunow Fidschi Algen (187-4), p. 33, has described the same 

 Alga as Endocladia rigens. but, as he wrote me later, he had been 

 convinced for some time that his Endocladia rigens was identical with 

 Endotrichia cervicornis. In any case the species Endocladia rigens, 

 Grun., which J. Agardh in the Epicrisis (p. 559) reckons as " species 

 iuquirenda" of Et dtcladia, must henceforth be assigned to this genus. 



