ла шашы дын сазы ғы ышы лғ са. SKU Su abu ТОРРЕНТА Е: 
SPHAEROCOCCACEAE 121 
commonly form a more solid or compact central strand than in the 
ordinary North American conditions of the species. We have 
not been able to examine the structure of the procarp in these 
Peruvian plants, but the general habit of the plants and the dis- 
tribution of the cystocarps seem to justify placing them with 
Agardhiella rather than with Solieria. 
The type of Cystoclonium gracilarioides Harv. from Esquimalt 
Harbor, British Columbia, we saw in 1904 in the herbarium of 
Trinity College, Dublin, and considered it to be “ Rhabdonia 
Coulteri," but we have no detailed notes and no recollection of any 
microscopic study of it. It was described by Harvey as sterile. 
PLATE 47. Agardhiella tenera 
Photograph of a tetrasporic specimen (Coker 94—from liquid preservative), 
natural size. 
Rissoella ? denticulata (Mont.) J. Ag., described from Paita, 
Peru, is discussed under Grateloupia, the genus in which it was 
originally placed by Montagne. 
Family SPHAEROCOCCACEAE 
TREMATOCARPUS Киш. Phyc. Сеп. 410. 1843 
TREMATOCARPUS DICHOTOMUS Kiitz. Phyc. Gen. 410. 
pl. 51.f.I. 1843; Tab. Phyc. 19: pl. 72. f.a, b. 
1869 
Thallus cartilaginous, compressed or complanate throughout, 
flabellately dichotomo-fastigiate, attaining a len of about 1т 
cm. and commonly 8 or 9 times forked, reddish toward the apices 
but mostly a light olive-green, occasionally proliferous toward the 
base; segments linear, erecto-patent, 1.5-3 mm. wide, 2-4 times 
as wide as thick, often lightly canaliculate, the axils somewhat 
rounded, the apices subacute or rather obtuse, the longer some- 
times lanceolate; medulla rather loosely filamentous; peripheral 
cells of cortex 5-10 и in diameter in surface view; nemathecia on 
one face only, rather indefinite in form, sometimes occupying the 
entire face of the segment, sometimes limited to a narrow longi- 
tudinal band; tetrasporangia zonately divided, the spore-tetrads 
58-72 и X 16-24 и; cystocarps marginal or irregularly aggregated, 
subglobose, about 1 mm. in diameter. [PLATE 48. 
In “опе fathom," Isla Vieja, Bahía de la Independencia, July 
20, 1907, Coker 09641 (PLATE 48). 
