FROM THE NORTH-WEST AMERICAN COAST. 171 
49. Plocamium coccineum, Lyngb.; Harv. Ner. Bor. Amer. ii. p. 153. 
Dredged in 6-8 fathoms, Esquimalt, Dr. Lyall; low-water rocks, 
Fuca Strait, C. Wood. 
Apparently common ; several specimens sent. 
50. Rhodymenia pertusa, J. Ag.; Harv. Ner. Bor. Amer. ii. p. 147. 
Cast ashore, Point Roberts; and on rocks at low water, Fuca Strait, 
Dr. Lyall. 
Fine specimens ; some with cystocarpia. 
51. Rhodymenia palmata, Grev.; Harv. Ner. Bor. Amer. ii. p. 148. 
On rounded pebbles, on an exposed beach, Esquimalt, Dr. Lyall. Also 
cast ashore, and on rocks at low water, in Fuca Strait, Dr. Lyall. 
Common, and quite like the ordinary broad-leaved European 
form. 
52. Rhodymenia corallina, Bory ? 
Dredged in 14 fathoms, St. Juan de Fuca, Dr. Lyall. 
Fragments, apparently of this species. 
53. Rhodymenia palmetta, Grev.; Harv. Ner. Bor. Amer. ii. p. 149. 
Fuca Strait, on stones, Dr. Lyall. 
A single specimen. 
54. Ahnfeldtia plicata, J. Ag.; Harv. Ner. Bor. Amer. ii. p. 168. 
Esquimalt, and Fuca Strait, Dr. Lyall. 
55. Gymnogongri species. 
Esquimalt, Dr. Lyall. 
One small specimen with favellidia. It agrees in several ré- 
spects with G. linearis (Turn. Hist. Fuc. t. 220), but is much 
smaller and more ramulous, and may be distinct. 
56. CysTOCLONIUM GRACILARIOIDES, n. sp. Fronde longissima sim- 
pliciuscula crassa alterne v. vage v. secunde ramosa, ramis cylindraceis 
basi vix attenuatis simplicibus omnino nudis v. ramulos perpaucos 
ferentibus, cystocarpiis? 
Dredged in 10 fathoms, Esquimalt Harbour, Dr. Lyall. 
Fronds 12-18 inches long, 1-14 lines in diameter ; very like the 
cord-like varieties of Gracilaria confervoides, but with the cellular 
structure proper to Cystoclonium. Lateral branches numerous, 
5-6 inches long, patent, quite simple, mostly naked, rarely with a 
few ramuli. Fruit a desideratum. 
57. CALLOPHYLLIS FLABELLULATA, n.s. Fronde pusilla (1-4-unciali) 
flabelliformi coccinea subdichotome v. digitatim multipartita et fas- 
tigiata, laciniis linearibus raro cuneiformibus patentibus sensim an- 
