442 MARINE BIOLOGY OF THE SUDANESE RED SEA. 
the Red Sea by Agardh, from Suez by Zanardini, and from the Somaliland 
Coast by Piecone. 
9. CAULERPA PELTATA, Lame., Ё. TYPICA ; Weber van Bosse, in Ann. Jard. 
Вниепз. 1898, р. 875. 
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 INCRASSATA, Lamz., f. MONILIS, Е. S. Barts; №. S. Barton, 
Genus Halimeda, Monogr. lx. of the ода Expedition, 1889—1900, 
Dredged at 2-3 fathoms at anchorage off Suez. Recorded by Zanardini, 
under the name of М. monile, from Suez, Akaba, and Kosseir. 
4. HALIMEDA Opuntia, Lamz., Ё. TRILOBA, Hart. 
('olleeted in shallows in Suakim Harbour. 
5. HALIMEDA OPUNTIA, Lamz. 
The plant here referred 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, (7. 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 а 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. DICTOSPHARIA FAVULOSA, Deene. 
This form occurred along with sponges forming large patches on the sands 
at Khor Dongola. It is recorded as Valonia favulosa, Ag., from the Red 
Sea by Zanardini and by Piccone. 
10. Сортем TOMENTOSUM, Kütz. 
One small and somewhat mangled plant was found attached to Lithophyllan 
affine (34). It was unmistakably, however, C. tomentosum, whieh has been 
recorded by several authors from the Red Sea. 
