328 PLORiDEiE (Barton). [^Peysaoneiia 



2. P. Harveyana Crn. in J. Ag. Sp. Alg. vol. ii. pt. 2, p. 501. 

 LOANDA. — Morro das Lagostas ; July 1854. No. 122. 

 St. Vincent, Cape de Verde. — Praia de Gale ; 22 Aug. 1863. 

 No. 236. 



18. GRATELOUPIA Ag. Spec. Alg. i. 221. 



1. G. lanceola J. Ag. Sp. Alg. vol. ii. pt. i. p. 182. 



LoANDA. — Fronds gregarious, chiefly covering the sides of rocks and 

 stones ; fertile plants always much branched, when sterile smaller. 

 Colour when alive a dark steely purple Hab. on the Angola shores 

 near Morro das Lagostas, rare, on rocks ; July 1854. No. 120. 



19. MELOBESIA Lam. Hist. Polyp. Flex. 313. 



1. M. corticiformis Kiitz. Sp. Alg. p. 696. 



St. Vincent, Cape de Verde. — On the fronds of Gelidium rigidum 

 on the shore ; Aug. 1853. No. 251. 



20. CORALLINA Lam. Polyp, fl. p. 275. 

 1. C. officinalis Lam. Fauna Suae. n. 2234. 



Madeira. — Praia de Camara dos Lobos ; Aug. 1853. No. 268. 



A certain number of the algae collected by Dr. Welwitsch are 

 not suliiciently well preserved to be named specifically, and are 

 therefore not given here. Among these are species of CyanophycecB, 

 Cladophora, Sargassum, Dictyota, Corallinece, Gracilaria^ Poly- 

 siphonia, and Nitophyllum. 



