ZOOLOGY AND BOTANY, MICROSCOPY, ETC. L91 



1. Notes upon ferns recently collected in Guatemala, by Baron von 

 Tiirckheim, with descriptions of thirteen new species. 2. The bipinnate 

 species of Oy allied (one of the five species is new). 3. A revision of the 

 West Indian species of Polystichum, with a key to the nineteen species 

 (live of them are new). 4. Description of four new species. 



American Species of Dryopteris.* — C. Christensen publishes a re- 

 port on the American ferns of the group of Dryopteris opposita con- 

 tained in the U.S. National Museum, including some 425 specimens, 

 many collected by John Donnell Smith in Central America. Nine 

 species are described as new ; and in this and a preceding paper 94 

 American species of this one group have now been treated of by the 

 author. The species of the Andes and West Indies have much affinity, 

 while those of South Brazil show a remarkable difference. In the West 

 Indies the continental element is strongest in Jamaica, where several 

 species occur which are not found in the smaller islands. The geo- 

 graphical distribution of the species is displayed in tabular form. 



Ferns of the Philippines.! — E. B. Copeland publishes a fourth 

 article on new or interesting Philippine ferns, containing descriptions of 

 seven new species and a new variety. Gurrania is a new genus, with 

 one species, collected in the island of Luzon. It is probably derived 

 from Athyrium, but is distinct in aspect and in various characters from 

 every group in that genus, and its sori have no indusia. 



Ferns of Costa Rica .| — H. Christ publishes a sixth paper on the 

 ferns of Costa Rica containing nearly fifty species, twenty-nine of which 

 are new, including Costaricia Werckleana. the type of a new genus. This 

 plant, though sterile, shows a sufficiency of characters to mark it out as 

 a representative of a genus previously undescribed, but of uncertain 

 position. Possibly it will eventually be found to have dimorphic fronds 

 like a PoJybotrya. Its habit resembles that of Nephrolepis. But from 

 both these genera Costaricia is distinguished by various details. The 

 specimens determined in this paper were collected by C. Werckle and 

 C. Brade. 



Ferns of New Guinea. § — H. Christ gives an account of the ferns 

 brought back from New Guinea by the Dutch Scientific Expedition. 

 They are seventy-three in number, and were collected mostly by G. M. 

 Versteeg and a few by Brariderhorst : and they include eighteen new 

 species and varieties. 



Japanese Lycopodiales.|| — H. Takeda gives a systematic account of 

 the Lycopodiales of Hokkaido and of Japanese Sachalin, showing the 

 synonymy, literature and distribution of each species and variety, and 

 supplying some text-figures. The enumeration comprises 12 species, 

 X varieties, and 2 forms of Lycopodium, 3 species of Selaginella, and 2 of 

 Isoetes ; and the detailed keys to the species are provided under each 

 genus. 



• Smithsonian Misc. Coll. Washington, lii. (1909) pp. 365-90. 



t Philippine Journ. Sci. Manila, iv. (1909) pp. 111-15. 



j Bull. Soc. Bot. Geneve, ser. 2, i., pp. 216-36 (figs.). 



§ Result. Expe'd. Sci. Neerlandoise a la Nouvelle-Guinee, viii. (1909) pp. 149-64. 



|| Bot. Mag. Tokyo, xxiii. (1909) pp. 200-43 (figs.). 



