<Li> Lupus (corner) </Li> <Tr> <Td_colspan="2"> Visible at latitudes between + 54 ° and − 83 ° . Best visible at 21: 00 (9 p.m.) during the month of April . </Td> </Tr> <P> Hydra is the largest of the 88 modern constellations, measuring 1303 square degrees . Also one of the longest at over 100 degrees, its southern end abuts Libra and Centaurus and its northern end borders Cancer . It has a long history, having been included among the 48 constellations listed by the 2nd century astronomer Ptolemy . It is commonly represented as a water snake . It should not be confused with the similarly named constellation of Hydrus . </P> <P> The Greek constellation of Hydra is an adaptation of a Babylonian constellation: the MUL. APIN includes a "serpent" constellation (MUL. DINGIR. MUŠ) that loosely corresponds to Hydra . It is one of two Babylonian "serpent" constellations (the other being the origin of the Greek Serpens), a mythological hybrid of serpent, lion and bird . </P>

What is the name of the largest constellation