46 



ORCHESTIIDJi:. 



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. 



