• Peripatus is a connecting-link between Annelida and Arthropoda.

• Body of Peripatus is elongated, cylindrical caterpillar like without external segmentation, measuring 1.5 to 15.00 cm in length.

• Trunk bears a series of paired short stumpy appendages, which vary in number 14 to 43 pairs.

• Anus lies at the posterior end of the body and behind the last pair of legs.

• Sexes are separate.

• Peripatus is nocturnal, lives in crevices of rocks, under bark and stones and in other dark moist places and beneath fallen leaves.