WE welcome the appearance of No. 1 (March, 1942) oft Vol. 2 of the Revista Brasileira de Biologia, the official organ of the Biological Society of Brazil. The issue runs to 133 pages and contains seventeen papers covering a very wide field of biological subjects including medicine and parasitology. Thus, P. W. Wygodzinsky describes new species of insects of the orders Diplura and Thysanura from Palestine: J. R. Valle and P. R. Souza discuss observations concerning the endocrine system of eighty-four ovoviviparous snakes, and especially the corpora lutea ; and F. Feigland H. Cardoso write on tests for the identification of ascorbic acid. Each volume of the journal is to contain about five hundred pages, comprised in four parts issued in March, June, September and December. The subscription outside Brazil is 4 U.S. dollars, which should be sent to the Secretario da Comissao de Redagao, Mario Vianna Dias, Caixa postal 1.587, Rio de Janeiro, D. F., Brazil.