176 ME. E. m'lachlan o?^ the neueopteea oe 



Yet another species of this family, from Madeira, probably 

 exists iu Mr. "Wollaston's collection in the British Museum ; 

 but it is not in a condition for minute examination, principally 

 owing to its having been gummed on card, a practice to which 

 Mr. "WoUaston was so particularly attached. 



EPHEMEEIDiE. 



Cloeon dipteeum, L. (Che di]itera, Hag. Ent. Month . Mag. ii. 

 p. 26.—Cloeon f/i^j/erww, Eaton, Tr. Ent. Soc. Lond. 1871, p. 102.) 



Madeira {Wollaston, Eaton). 



Canaries: Teneriffe (-£/«ifo?0- 



Erequents the pools formed by the streams at their lower 

 portions, and adjacent localities where the water is warm. 



BAiiTis EHODANi, Pictet. (C'loe maderensis, Hag. Ent. Month. 

 Mag, ii. p. 25. — B. rhodani, Eaton, Tr. Ent. Soc. Lond. 1871, 

 p. 114.) 



Madeira {Wollaston, JEaton). 



Canaries : Grand Canary and Teneriffe {Eaton). 



Erequents cool streams up to 3000 feet, or more. 



N.B, I think it may be safely assumed that no other Epbe- 

 meridse inhabit the islands. The acquisition of the subaquatic 

 stages of insects o£ this family was above every other entomolo- 

 gical consideration with Mr. Eaton during his visit, and no larva 

 or nymph pertaining to other than these two species was dig- 

 covered. Both are notorious for wide distribution. 



Odonata. 



I am indebted to my friend Baron de Selys-Longchamps for 

 having examined some Dragonflies concerning which I was 

 uncertain, and for the loan of a series of examples bearing upon 

 the identification of the species found in the islands. 



Libellulina. 



Palpopleuea maeginata. Fat. {Libellula variegata, E., Bory 

 de St. Vincent, Essai, p. 869. — L. Lucia, Drury, $ .) 



Canaries {JBory de St. Vincent). 



I bave not seen this common African species from the islands ; 

 possibly it occasionally flies over from the mainland, 



