We present the first checklist of mosasaur findings (Squamata: Mosasauroidea) from the Late Cretaceous of Chile. Almost all of the material collected so far come from different localities on the coast of central Chile, with a single locality in the southernmost part of the country, whose ages range from early to late Maastrichtian. The recovered material corresponds to isolated teeth and very fragmentary remains, making it difficult any taxonomic identification to genus or species level. However, we recognize the existence of at least two different morphotypes in central Chile, represented by taxon related to tylosaurine mosasaurs, and a taxon of small size, tentatively referred to the halisaurines. The only finding from southern Chile shows affinities to a common and abundant form from Antarctica, however, the latter is still poorly known. The findings presented here are discussed in terms of systematics and paleogeographic distribution, adding to the knowledge of the herpetofauna of the Weddellian Biogeographic Province.

In the dirge that closes Euripides’ Andromache the form κατάρξω (l. 1199) has been traditionally interpreted as a 1st sg. fut. act. (‘I will begin the funeral song for my dead master’). Allegedly, the chorus is taking on a leading role, which breaks genre conventions. This interpretation is problematic from the point of view of syntax and semantics. Difficulties disappear if κατάρξω is interpreted as a 2nd sg. aor. mid. with a Doric augment (‘you have begun the funeral ritual for my dead master’).

La presencia de poros precloacales se utiliza con frecuencia en Liolaemus para diferenciar a machos de hembras. Actualmente este carácter es confuso en Liolaemus jamesi porque se ha descrito la presencia y ausencia de poros en las hembras. En este trabajo se confirmó que tanto machos como hembras de L. jamesi poseen poros precloacales.

In this work, an extensive bibliographic review was carried out from records of the endemic and threatened lizard Liolaemus gravenhorstii which has few known localities. We used information from principal participants involved in the generation of knowledge from the scientific, citizen, private and governmental spheres. This objective was linked to a spatial analysis of biodiversity data to update and put into perspective both historical and current distribution records, including those confirmed by the herpetological community and potential records in a detailed map. In addition, comments are presented on its ecological aspects and diagnostic characters, as well as future research considerations that should be addressed to delimit more precisely the current distribution range of the species and estimate its population densities.

Liolaemus melanops es un lagarto de mediano tamaño (hasta 90 mm LHC), que habita zonas arenosas bajas ydunas costeras en las provincias argentinas de Río Negro y Chubut. En este estudio se analizó el ámbito de hogarde una población de L. melanops en el centro de Chubut, durante el período febrero a mayo de 2005. En unacuadrícula de 100 x 100 m, todos los individuos observados fueron capturados, sexados, medidos, marcados yliberados en el mismo sitio. Mediante transectas de rumbo fijo, realizadas a intervalos regulares entre las 8:00 ylas 19:00 h, fue registrada la posición de todos los individuos observados. El ámbito de hogar de cada ejemplar fuecalculado utilizando el método del polígono convexo mínimo. El área promedio para los machos no fue significativamente diferente al de las hembras. No se encontró correlación entre el tamaño corporal y el tamaño del ámbito de hogar. Se observó un gran solapamiento en el ámbito de hogar en machos pero no en hembras. Estos resultados se discu...