Rhachidelus brazili (Squamata: Serpentes): first records from Paraguay and clarification of the correct spelling of the generic name.

The article focuses on a research work conducted to determine the correct spelling of the generic name of Rhachidelus brazili Boulenger that is a pseudoboine snake endemic to northern South America and to report on the confirmed specimens of this species from Paraguay. It mentions that it is a large healthy snake and has as many as 25 scale rows in mid body. It also mentions that in Argentina rhachidelus brazili is popular from only two specimens that are provincia Misiones, Santa Ana and provincia córdoba, tulumba. It reports that its presence close to Paraguayan border in Brazil and Argentina determined the probability of its occurrence in Paraguay. It also reports on the specimen of this snake deposited in the Para La Tierra collection Laguna Blanca in San Pedro, California.