56 LAMINARIACEAE 
mm. thick above, rather coarsely serrate, the surface strongly 
and coarsely rugose longitudinally, bearing rarely a submarginal 
series of teeth, otherwise without appendages, the larger of the 
marginal teeth bifid or bearing 1 or 2 smaller teeth; muciferous 
canals wanting or inconspicuous; sori soon confluent and forming 
a subcontinuous central band 1-3 cm. broad. [PLATE 14, FIGURE 
A; PLATES 15 and 16; PLATE 18, FIGURE А.] 
In beach drift, La Punta, region of Callao, Jan. 25, 1907, 
Coker 28 (type); on the beach, San Lorenzo Island, Feb. 5, 1907, 
Coker 71 (also in museum of Johns Hopkins University under 
Coker 70); “іп the surf," Lobos de Tierra, Apr. 2, 1907, Coker 151}; 
also a photograph taken by Dr. Coker showing drift on the beach 
of Sechura Bay (PLATE 18, FIGURE A) with the following note: 
“Еог miles the beach was thus strewn with weed, and almost 
exclusively of one kind—a heavy brown corrugated-leaf weed 
(abundant in Bay at 5 fathoms)—similar to no. 71 and similar 
specimen included in 151.” 
Although it appears from Dr. Coker’s photographs and notes 
that the plant described above was very abundant in Sechura 
Bay at least, the material originally sent by him to the present 
writer consisted of only one complete plant and parts of two others 
with stipe lacking. However, Dr. Coker secured at Callao a 
photograph of a group of well-developed plants (pLATE 14A) and 
some of the measurements given above have been drawn from this 
photograph, which, happily, included a tape-measure of known 
dimensions. No. 71, the complete plant, is immature and the 
primary blade still persists; it is shown, reduced, on PLATE 15, 
and the same individual is included also in the group photographed 
in Peru by Dr. Coker (PLATE 14А). The sporophyls in no. 151f 
are fertile. 
From Dr. Coker and from Dr. G. Clyde Fisher (formerly of 
Johns Hopkins University) we have learned that several of the 
larger plants shown in PLATE 14, FIGURE A, were dried and sent to 
Johns Hopkins University as no. 70. These specimens, more ог. 
less mutilated, we have been permitted to examine through the 
courtesy of Professor Duncan S. Johnson and of Dr. G. Clyde 
Fisher and this examination has enabled us to complete and 
modify our first description in several particulars. 
Eisenia Cokeri is closely related to the Californian Eisenia 
