The previously monotypic genus Phanolinopsis Scheerpeltz is revised and four species are described as new: Phanolinopsis erythros sp. n. from Guatemala and Panama, Phanolinopsis goniakos sp. n. from Costa Rica, Phanolinopsis ...

EI arbusto conocido en la costa tropical del Golfo de MexiCo con el nombre comun de "cornizue- 10" (Acacia cornigero y Acada sphaerocephala) {fi;. , gura J)es una mafeza indeseable y rrluy abudante en los potreros. En ...

While trapping beaver in the Mississippi River bottom-lands below Hastings, Minnesota in March, 1960, many of the twoyear- oIds were found to be heavily infested with the coleopterous ectoparasite, Platypsyllus castoris ...

The caprice of one large meteor hitting the earth 65 million years ago (Richard A. Kerr, Research News, 14 Aug., p. 878) is responsible for the existence of humanity. Had the dinosaurs survived, with all their capacity ...

Horses are major contemporary dispersers of guanacaste tree seeds (Enterolobium cyclocarpum) in Costa Rica, and probably were in prehistoric times as well. By placing 2-L and 8-L piles of fresh horse dung containing 5, ...

The answer to Why do "all the good things which an animal likes have the wrong sort of swallow or too many spikes"? (Milne, 1928) is that the herbivores selected the plants to be that way. Given the acceptance of this ...