Vol. 15 (2)

December / Diciembre 1967

CONTENTS / CONTENIDOS

Two new trematodes from the intestine of a yellow bat, Nycticeius kuhlii from Lucknow, India
Agrawal, V.

Mamiferos do nordeste do Pará, Brasil
Carvalho, C.T. De & A.J. Toccheton

The Central American species of Euglossa subgenus Glossura Cockerell, 1917 (Hymenoptera, Apidae)
Moure, J.S.

Estudio toxicológico y fitoquímico de Pernettia coriacea Klotzsch
Sáenz, J.A. & M. Nassar

Estudio preliminar sobre la floración en el Roble de Sabana, Tabebuia pentaphylla (L.) Hemsl
Fournier, L.A.

The natural history of Equisetum in Costa Rica
Hauke, R.L.

Presencia de Prosthenhystera obesa (Diesing, 1856) Travassos, 1920) Trematoda, Digenea) en peces comestibles de agua dulce de Mexico
Caballero y C., E. & F. Jiménez

On some nematodes belonging to the genus Rictularia (Nematoda: Spiroidea)
Johnson, S.

A new species of stingless bee Trigona (Plebeia) from Costa Rica, with descriptions of its behavior and cluster-type nest
Wille, A.

Generalized histoplasmosis in El Salvador, C.A.-A report of 13 cases in children under two years of age
Trejos, A. & J.L. Guardián

Comportamiento defensivo de la "Rana Ternero", Leptodactylus pentadactylus
Villa, J.