1897.] CarpknTER. — The Collembola oj Miichehtowji Cave. 231 



Anurlda granaria (Nicolet). 



A few examples of this species were among Mr. Jameson's specimens 

 of Lipura Wrightii, It is a white species, found somewhat rarely under 

 stones. The genus Anurida, Laboulbene, in which it is now placed, is 

 characterised by the circular arrangement of the prominences of the 

 post-antennal organ. Moniez (5) states that this species has been drawn 

 up in well-water in France. 



In my previous paper on the Mitchelstown cave fauna, I 

 drew attention to the apparent similarity of cave-insects in 

 widely-separated localities, and ventured to suggest the possi- 

 bility that the identical surroundings might have induced the 

 independent development of similar forms in. Europe, Ireland, 

 and North America. 



I have now been able to compare the Adelsberg and 

 Mitchelstown species of Lipura, and find the differences 

 between them even less than was before supposed, and that 

 they are so closely allied, as to be hardly separable. It is 

 evident that my " Smella cavernicola,'' being really a Te^iiple- 

 tonia, can have no close affinity with E^itomobrya caver7iarum 

 (Packard) from the North American caves. I find, however^ 

 that Moniez has pointed out the close similarity of his Seira 

 cavernarum to that species of Packard's. Of course Seira has 

 scales and Entomobrya has none, but Moniez, finding the 

 difl&culty of seeing the transparent scales on these white cave 

 insects, thinks it possible that Packard may have failed to 

 make them out, and the form of his insect seems to suggest a 

 Seira or a Cyphoderus rather than an Eritomobrya, I have 

 already dwelt on the apparent similarity between the Mitchels- 

 town Cyphoderus Martelii and Seira cavernarum, and it is 

 interesting to notice that in Packard's species the lengths of 

 the antennae vary inversely as the depth of the caves where 

 the specimens occur, thus bridging over one of the differences 

 between the Mitchelstown and the French species. It is to 

 be hoped that further explorations of our caves may throw 

 more light on this most fascinating problem of the possible 

 multiple origin of identical species. 



