ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 75 



Banyuls in the Mediterranean, but without success. The sexuality 

 therefore of H. scoparia rests on the testimony of a single specimen, and 

 it may be fairly deduced that the occurrence of antheridia and oogonia 

 is extremely rare. 



Aglaozonia melanoidea.* — In two interesting notes, C. Sauvageau 

 adds largely to our knowledge of A. melanoidea and its life-history. He 

 succeeded in finding it in the Gulf of Gascony, and now he finds it at 

 Banyuls in the Mediterranean ; besides which the late Anna Vickers 

 dredged it up in the Bay of Naples. After Sauvageau had found it in 

 the Gulf of Gascony, he put forth the theory that A. melanoidea might 

 be the sporophyte of Cutleria adspersa. One objection to this theory 

 was that A. chilosa would then be left without a gametophytic genera- 

 tion ; and another was that A. melanoidea was then unknown in the 

 Mediterranean. This latter objection has been now done away with. 

 The plant found by Anna Vickers is an intermediate state between the 

 sterile plants from Guethary and the fertile ones from Banyuls. These 

 fertile specimens were collected in December 1905 and January 1906, 

 and were found to have sporangia grouped in sori, each of the rows of 

 cells of a sorus being surmounted by an elongated sporangium. At the 

 end of February and at the end of June, the plants were once more 

 sterile, and corresponded with the specimens gathered at Guethary. The 

 sporangia contained eight zoospores, similar to those of A. parvula. 

 The latter species is less common at Banyuls than is A. melanoidea. 

 Cultures of the zoospores of A. melanoidea were made, and the results 

 were extremely interesting. Hundreds of plantlets were produced, all 

 showing the same character. They consisted of monosiphonous, very 

 slender filaments, 2-4 mm. long, having long cells below. The shorter, 

 less branched, plantlets were either sterile or nearly so, while the longer 

 plantlets, much branched halfway up, were very fertile, bearing anthe- 

 ridia and oogonia in all stages of development. None of these plants 

 resembled a young Cutleria : indeed, had their life-history not been 

 known they would have been regarded as a new genus intermediate 

 between Ectocarpus and Cutleria. The author designates this form 

 " form Kuckuck," since that author had previously obtained certain 

 confervoid filaments from a culture of Aglaozonia parvula. The actual 

 position and signification of "form Kuckuck" in the life-cycle of 

 Cutleria cannot at present be stated, but various suggestions are made 

 by the author. 



Algae of the 'Valdivia' Expedition.! — T. Reinbold publishes his 

 report on the marine algae of the German ' Valdivia ' Deep-sea 

 Expedition (1X98-9). The areas from which the specimens came are 

 the Canary Islands, Cape of Good Hope, Bouvet Island, Kerguelen 

 Island, the islands of St. Paul and New Amsterdam, Sumatra, Nicobar 

 Islands, Diego Garcia (Chagos Archipelago), Mahe (Seychelles), Dar-es- 

 Salaam, Red Sea ; 162 species are enumerated, and -1 of these are new 

 to science. The largest collections were made in Kerguelen, Sumatra, 

 Diego Garcia, Mahe, and Dar-es-Salaam. In his general remarks on 



* Tom. cit., pp. 139-41 and 271-2. 



t Wiss. Ergebn. Deutsch. Tiefsee-Exped. ' Valdivia,' ii. 2 (1907) 3S pp. (4 pis.). 



