SE PIS RT УТУР ua G трасе" YS C 
3 
; 
GYMNOGONGRUS 109 
evidently a Gymnogongrus, but it is, on the whole, a more rigid 
and a more terete plant than any of these from Peru chat we are 
referring to G. furcellatus; the walls of its medullary cells are 
thinner and seem less inclined to swell when soaked out in water. 
The type of Bory’s Chondrus sejunctus, from Concepcion, Chile, 
we have examined through the courtesy of Messrs. Mangin and 
Hariot of the Muséum d’Histoire Naturelle. It is sterile (and 
bears no Actinococcus) and in habit makes an approach to Bory’s 
Sphaerococcus disciplinalis in showing a tendency to polychotomy, 
but is thicker and more rigid throughout and is subterete below 
and in some of its ultimate branches, though, on the whole, 
decidedly flattened toward the extremities. 
PLATE 42. Gymnogongrus furcellatus 
A photograph of Dr. Coker's no. 17 p.p. (from liquid preservative), natural size. 
GYMNOGONGRUS DISCIPLINALIS (Bory) J. Ag. Sp. Alg. 
2: 319. 1851; 31: 210. 1876 
Sphaerococcus disciplinalis Bory, Voy. Coquille, Bot. Crypt. 172. 
1828. ' 
In beach drift, La Punta, region of Callao, January 25, 1907, 
Coker 38 p.p. (fragment only); on rocks, Апсбп, February 13, 
1907, Coker 95 p.p. (PLATE 43). 
While we have refrained from including Sphaerococcus disci- 
plinalis Bory in the synonymy of Gymnogongrus furcellatus we are 
in some doubt as to what characters may be depended upon to dis- 
tinguish it from Agardh’s species. Bory founded his S. disci- 
plinalis on a considerable wealth of material, including specimens 
of somewhat varied habit from Cape Horn, coming to him from 
the herbarium of Chauvin, specimens from the western* coast of 
South America, communicated by Lamouroux іп 1824, and speci- 
mens from Concepcion, Chile, brought by d’Urville and Lesson. 
The Cape Horn specimens were not only mentioned first by Bory, 
but one of the specimens in his herbarium, inscribed in his hand 
“ Sphaerococcus disciplinalis N. coq. р. 172, du Cap Horn, par М" 
Chauvin de Caen, 1824,” has, more than the other specimens, the 
elongate subfasciculate flagelliform branches that evidently sug- 
* The inscriptions in Вогу’з herbarium indicate that the — orientales” of his 
text was a misprint or slip of the pen for ''cótes occidentales 
