Srivinthish

Srivinthish are a sapient alien species, and one of the many races which have visited Earth in the 21st century as passengers of the Chirpsithra's interstellar liners.

Biology
Srivinthish don't communicate with sound, although they do produce continuous sounds from their spiracles. This act is referred to as skreeking, and it's been noted that the Srivinthish themselves don't notice it, although whether they can't hear it or are simply accustomed to it is not known.

Appearances

 * "Limits", by Larry Niven (1981)