Pulastya = Pula + Stya.
_Pula_ is large, wide. It also means a thrill of joy or fear.
_Stya_ is he who collects, is connected with, remains in. Agastya = Aga
+ Stya.
_Aga_ is mountain, unable to walk, fixed.
According to a Pauranik legend, the Vindhya mountain began to rise
higher and higher so as to obstruct the path of the sun and moon. The
gods being alarmed sought the aid of Agastya who was the teacher of
Vindhya. The Rishi approached the mountain and asked it to bend down and
give him an easy passage to the south and to retain the same position
till his return. Vindhya obeyed the order of his teacher, but Agastya
never returned from the south and Vindhya never attained the height of
Meru.
According to the Bhagavata, Agastya is the digestive fire of the
stomach.
Visravas = Vi (signifying intensity) + Sravas (ear).
Kubera is literally deformed. He is the god of riches and Regent of the
North. He is the king of the Yakshas and Kinnaras and a friend of Rudra.
His abode is Kailasa. He is represented as having three legs, only eight
teeth and a yellow mark in place of one eye.
Ravana, Kumbhakarna and Vibhishana are Rakshasas made famous by the
Ramayana.
Ravana is one who makes a loud noise. The Rakshasas reached the height
of their power in his time. The Yakshas, before his time, had occupied
Lanka or Atlantis under Kubera, but Ravana propitiated Siva by his loud
hymns, and acquired easy mastery over his kindred elementals. He ousted
the Yakshas from Lanka and made it his own capital. Ravana also
controlled the higher Devas of Triloki.
Kumbha karna = Kumbha (pitcher) + Karna (ear). This pitcher-eared
brother of Ravana is said to have devoured thousands of beings including
sages and heavenly nymphs. He slept for six months at a time. He was
ultimately slain by Rama.
Vibhisana, meaning the Terrible, left his brother Ravana and joined
Rama. After the death of Ravana, Rama installed him on the throne of
Lanka. He is said to be still living.
The Rakshasas are said to have possessed Kama Rupa _i.e._ they could
assume any body at will.
In the line of Pulastya we have this strange combination -- the
digestive fire of stomach, ears, Yakshas and lastly the Rakshasas who
could change their body at will. Altogether we may say, Pulastya is
Intelligence which governs animal passions and Kama.