Pakṣapradyotaka with the palm placed downwards is called Garuḍapakṣa.
When the two palms of the hands are downwards and slightly bent, they should be known as Garuḍa-Pakṣaka.
Garuḍa-pakṣa (Garuda wing): Ardha-candra hands held at the sides of the hips, extended upwards. Patron deity Sanandana.
waist string, superiority.
If the two Ardhacandra hastas are first held at the sides of the hips and then extended upwards, it is Garuḍapakṣa (=wings of Garuḍa) hasta. Its presiding deity is Sanandana.
This hasta denotes waist, string and superiority.