24 CALIFORNIA ACADEMY OF SCIENCES. [Proc. 3D Ser. 



comparison, while not wholly inducing the writer to accept 

 Kjellman's conclusion as to the non-identity of the two spe- 

 cies, yet do not furnish sufficient reason for declaring them 

 identical. Until a more extended comparison can be made 

 of a wide range of forms, the writer prefers to leave the 

 species as established in the Alg. Amer.-Bor. ExsiccatcC 

 (1878, No. 69). 



The writer further takes this opportunity to express his 

 obligations to Mrs. J. M. Weeks for material of N.fryeanum 

 collected by her, which permitted a careful study of anther- 

 idial, tetrasporic and cystocarpic plants. 



Habitat. — No rehable data are at hand concerning the 

 habitat of this species. Some twenty-five specimens seen 

 by the writer were all washed ashore from deep water. 

 The plant presumably occurs upon rocks, and other alg«, 

 in the lower sublittoral, and perhaps elittoral zone. 



Distribution. — Known to occur with certainty at but two 

 localities on the Californian coast. At Golden Gate, San 

 Francisco Bay, it apparently has not been collected since 

 the first specimen, if indeed it was identical, was secured 

 by A. D. Frye and forwarded to Harvey. 



Localities. — Pebble Beach, Monterey Peninsula! (Miss 

 Bayles); Santa Cruz! (Dr. C. L. x\nderson ; Mrs. J. M. 

 Weeks); Golden Gate, San Francisco Bay ? (A. D. Frye, 

 fide Harvey, Ner. Bor.-Amer., Supp., 1858, p. 128). 



Nitophyllum corallinarum, sp. nov. 



Synopsis.— YxoxvA both prostrate and erect. Prostrate frond creeping, flat, 

 membranous, with microscopic veins and with rhizoids; lobed and branching, 

 with branches becoming erect at intervals, margin entire. 



Erect frond subsessile, shortly stalked, flat, membranous, with microscopic 

 veins; ovate-spatulate to elliptical, two to three times longer than broad; sub- 

 dichotomously lobed or divided, margin entire. Segments minute, ovate, 

 oblong or cuneate. Stalk very short, narrowly linear or cylindrical, passing 

 into a midrib, the latter extending throughout frond, usually branching and 

 free. 



Sporangia large, prominent, in sori of varying shape and size, solitary or 

 clustered on body of frond or its segments. 



Remarks on the Species. — The form from which the syn- 

 opsis of this species is drawn up was obtained at San Diego 

 by Mrs. E. Snyder, and sent to the writer by Mr. F. S. 



