MARINE BIOLOGICAL STATION AT PORT ERIN. 35 



1901. My time was mainly devoted to studying the 

 living conditions of many of the marine forms of animal 

 life occurring in the immediate neighbourhood of Port 

 Erin, and somewhat careful attention was especially 

 devoted to several marine insects which, as far as I have 

 been able to ascertain, have not hitherto been recorded 

 from the L.M.B.C. district. 



" Among these Insecta, Machilis maritima (Leach) 

 was common about the cliffs and upon the walls of the 

 Biological Station, especially after dusk. I also took it 

 inside the Station at night, where it was attracted by the 

 lamp with which I was working ; they seemed partial to 

 places which received the glare of the lamp. I think this 

 is somewhat interesting, since it points to the probability 

 that the insect may become domesticated, if it is not 

 already so, in fishermen's cottages, &c, by the shore. As 

 is well known, its ally, Lepisma saccharina, is truly 

 domesticated in kitchens, bakehouses, &c. A Collem- 

 bolan closely allied to Anurida maritima (Guerin) LabouL, 

 was plentiful, especially during bright calm weather, upon 

 the surfaces of the rock-pools and crawling over the weed, 

 at low tide, but is completely submerged at high water. 

 It differs from the true A. maritima in that it possesses a 

 tooth to the inner margin of the claw of each foot, and 

 .further it has 9 elements, instead of 7-8, to the post- 

 antenna! organ, and in its general form is somewhat more 

 robust in build. Its habits are similar to those observed 

 for maritima by Laboulbene and Moniez. Another insect 

 of interest is a Chironomid larva which occurs in the rock 

 pools among Corallina officinalis. It belongs to the genus 

 Clunio of Haliday (Nat. Hist. Rev., vol. II., 1855, p. 52, 

 plate II.) ; the only British species of the genus is C. 

 marinus (Hal.), which has been recorded from three 

 localities in Ireland and once from Hastings, and to which 



