Apostolepis is a diverse genus of dipsadid snakes, currently comprising 34 species occurring in most cis-Andean South America. The taxonomy the group highly unstable. Upon discovering its type series, we redescribe rare A. ambiniger (Peters, 1869) and provide an account geographic distribution morphological variation pholidosis, osteology, hemipenial characters. We also discuss some aspects .

Abstract Snakes lay their eggs in clutches of different size, which are usually attached to each other forming a cluster. Egg-clustering is widespread phenomenon across alethinophidian snakes, mostly recorded Pythonoidea and caenophidian clades. Here we report new type egg-clustering for threadsnakes (Leptotyphlopidae) that departs from the type. We found females Epictia australis Leptotyphlops...

The snake genus Chironius Fitzinger, 1826 is endemic to the Neotropical region, occurring from Honduras to Uruguay and northeastern Argentina. Some species of the genus have taxonomic and/or nomenclatural problems, such as C. flavolineatus which lacks agreement in the literature about its authorship and type locality. Some researchers have been suggesting Jan (1863) as the author of the species...