Terrestrial Zoology of the Faroes. 155 



succeeding one being far more abundant, especially in 

 uncultivated ground.] 



Porcellio scaler (Latr.) occurs in the Faroe Islands in the 

 typical unicoloured form, and in the variety marmorata, both 

 of which are also common in the greater part of Europe. The 

 species has been recorded from Iceland, Greenland, North 

 America, Kamtchatka, the Cape of Good Hope, and several 

 of the more isolated islands, such as Ascension. 



[P. scaler is abundant in the Faroes, especially under stones 

 on the moors near the sea. The two varieties of the species 

 often occur under the same stone.] 



mSECTA APTERA. 

 By George H. Carpenter, B.Sc, M.R.I.A. 



The collection of Aptera from the Faroes comprises only 

 three species, all of which occur in the British Islands, and have 

 a wide general distribution. It is of importance, however, to 

 estimate as accurately as possible the precise range of these 

 humble wingless insects, as their conveyance across any wide 

 tract of ocean may be regarded as impossible. The pre- 

 sence of the same species in a scattered series of islands 

 may be taken, therefore, to indicate clearly some former land 

 connection. 



One of the Faroe Aptera is a Bristle-tail (Thysanuran), 

 while the other two are Collembolans or Spring-tails. 



Thy s anu ra. 



Machilid^. 



Machilis maritiina (Leach) — Naalsoe, under stones on sea- 

 cliff about two hundred feet above the shore. One female 

 specimen. 



This well-known shore-haunting form has a wide range 

 along the western European coasts — Canary Islands, Spain, 

 France, Ireland, Great Britain (including the Orkneys and 

 Shetlands), Holland, Norway, and now the Faroes. 



Collembola. 



Entomobryid.e. 

 Isotoma arlorea (Linn.) — Thorshavn, on rotten wood of 



