34 CLADOPHORACEAE 
cells, leaving narrow hyaline zones at the septa; C. allantoides is of 
much firmer consistency than C. Hariotiana and adheres rather 
imperfectly to paper on drying, while C. Hariotiana adheres to 
paper very much like some of the more delicate and gelatinous 
species of Callithamnion. 
It is a pleasure to associate with this attractive species the 
пате of М. Paul Hariot, assistant іп the Muséum d'Histoire 
Naturelle of Paris, to whom the writer is greatly indebted for the 
privilege of seeing not only the type specimens of C ladophora allan- 
toides but also the original materials of many other South American 
species, an examination of which was necessary to any adequate 
understanding of Dr. Coker's Peruvian collections. 
PLATE 4. Cladophora Hariotiana 
Photograph of the dried type specimen, natural size. 
CLADOPHORA FASCICULARIS (Mert.) Kütz. Phyc. 
Gen. 268. 1843; Tab. Phyc. 
3: PL po. f. П. 1854 
Conferva fascicularis Mert.; Ag. Syst. Alg. 114. 1824. Mont. FI. 
Boliv. 4. pl. 7. f. Г. 1839. 
In beach drift, La Punta, region of Callao, Jan. 25, 1907, 
Coker 38 p.p.; dredged in “about 234 fathoms” near northeast side 
of San Lorenzo Island, region of Callao, Feb. 7, 1907, Coker 59 р.р.; 
growing on surf-washed rocks, Chincha Islands, June 18, 1907, 
Coker 196 p.p.; from drift on the beach, Pisco, July 7, 1908, 
Coker 465 p.p. 
The numbers cited include a considerable range of forms and 
may or may not represent a single species. Some of them are 
evidently what Montagne described and figured as Conferva 
fascicularis, but there is some doubt as to whether any of the 
Peruvian material should be identified with this typically West 
Indian species. Two fragments, one under no. 38 and the other 
under no. 59, both from the Callao region, whence came the plant 
figured by Montagne, make an approach to Cladophora fascicularis 
in mode of branching and in form and size of cells, but the cells 
‚ аге apparently more rigid and thicker-walled, the walls becoming 
laminated in the older parts, and the constrictions at the septa 
are less pronounced. Іп the other specimens cited, these aberrant 
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