46 
ORCHESTIIDiE. 
caudal appendages, which are unibranched throughout 
this family, but which are doubly branched in Hyale. 
Only two species of this genus are known, and these 
are from habitats widely asunder : Nicea Lucasii, inhabit- 
ing the western coasts of South America, and our own 
British species. 
The following vignette represents a village of fisher- 
men’s huts in the Island of St. Kilda. They are built 
upon the plan of the houses of the Ancient Britons, and 
are within lined with the feathers of sea-fowl. 
