kh. J. HARVEY-GIBSON—REPORT ON THE ALGZ. i. 
the Red Sea by Agardh, from Suez by Zanardini, and from the Somaliland 
Coast by Piccone. 
2. CAULERPA PELTATA, Lam., f. typicA ; Weber van Bosse, in Ann. Jard. 
Buitenz. 1898, p. 375. 
Collected on coral-reefs at Khor Dongola, Suez. Recorded by Zanardini, 
under the name of C. chemnitzia, var. peltata. It is not recorded by Piccone. 
3. HALIMEDA INCcRASSATA, Lam., f. montuis, Bart.; E. S. Barton, The 
Genus Halimeda, Monogr. |x. of the Siboga Expedition, 1889-1900. 
Dredged at 2-3 fathoms at anchorage off Suez. Recorded by Zanardini, 
under the name of //. monile, from Suez, Akaba, and Kosseir. 
4. HALIMEDA OpuntTIA, Zam., f. tropa, Bart. 
Collected in shallows in Suakim Harbour. 
5. HatimepA Opuntia, Lam. 
The plant here referved to seems intermediate in character between the 
f. typica and f£. cordata of Barton’s Monograph. This identification is on the 
authority of Dr. Reinhold. 
6. AVRAINVILLEA LACERATA, J. Ag. 
Suez Bay. Recorded from the same locality by Zanardini, under the 
name of Chloroplegma sordidum. 
7. AVRAINVILLEA PAPUANA, G. Murr. et Boodle. 
Suakim. This is a Malayan and Indian Ocean species, not recorded in 
any of the Red Sea lists above referred to. 
8. UDOTEA ARGENTEA, Zan. 
Mud-flats in Suez Bay. Recorded and figured by Zanardini as a new 
species. The present plant agrees in all respects with Zanardini’s figure and 
description, as was pointed out to me by Mrs. Gepp. 
9, DicrosPH@RIA FAVULOSA, Decne. 
This form occurred along with sponges forming Jarge patches on the sands 
at Khor Dongola. It is recorded as Valonia favulosa, Ag., from the Red 
Sea by Zanardini and by Piccone. 
10. Coprum ToMENTOsUM, Kitz. 
One small and somewhat mangled plant was found attached to Lithophyllun 
affine (34). It was unmistakably, however, C. tomentosum, which has been 
recorded by several authors from the Red Sea, 
qe 
