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PASTOE U, r. J. W ALLEN a E EN ON SPECIES 



and not heUnd it in the Liunaean sense. Thus the JVeurecUpsis 

 is not his species. "What the latter really is should not be diffi- 

 cult to determine. He describes it as " non autem inter mini- 

 mas;" and by these words all species so small as P/i. longicornis 

 etc. are excluded; and the first word, ''minor," is also opposed 

 to the species intended by the foregoing descriptions, as, for ex- 

 ample {Ph. rhomhica), "Est haec inter majusculas sui generis," 

 and (Ph.ffrisea) " mediae magnitudinis est." The Linnean species 

 should therefore be larger than the "small" species (P. longi- 

 cornis, azurea, &c.), but smaller than Ph. rhombica and grisea ; and 

 the wings sliould, furthermore, be " fuscsD," which excludes all 

 pale species. All species of Anaholia and Stenophylax are also 

 excluded, partly because they are ordinarily too large, partly 

 because they have no " macula duplex flava, altera pone 

 alteram." There remain only the dark species of Limnophilus, 

 and of these only L. hipimclatus and L. griseiis auct. With 

 the former the words "macula duplex flava" will not agree, 

 the anastomosal space being indistinct and scarcely paler than 

 the ground-colour. L. hipunctatus is, moreover, too large, 

 being of the size of Ph. grisea {stigma auct.), of which Lin- 

 naeus says, " mediae magnitudinis est ;" the words " minor, non 

 autem inter minimas " are thus not applicable to L. Upunctatus. 

 Therefore only L. griseus auct. agrees with the description, it 

 having the " fenestrate spot " and " anastomosal space " very di- 

 stinct ; these are the spots that Linnaeus describes, and they are 

 not unfrequently yellowish or yellow, as he says. This species 

 also stands in the collections of the old Swedish entomologists as 

 PA. himaculata, L,, proving that such an application of the name 

 had occurred to those who lived near the time of Linnaeus, and 

 who were partly his disciples (see also Zetterstedt, ' Insecta Lap- 

 ponica,' p. 1062, who says, " sub nomine Ph. himaculata, L., exem- 

 pla hujus speciei mihi etiam communicata fuerunt "). Thus the 

 example in the Linnean collection is typical (see M'Lachlan, 

 ' Revision and Synopsis,' p. 87, footnote) ; and himaculata, L., 

 equals Limnophilus griseus auct. It could not possibly be Neu- 

 reclipsis himaculata auct., which, moreover, is not common in 

 Sweden, whereas L. griseus auct. is very common. 



Phetganea flavilateea (No. 1488). — This is an apocryphal 

 insect, and no one has essayed a determination of it, other than 

 that it may be Sialis lutaria aucu. It should be sufficient, by 

 pointing out the words " thoracis lateribus flavis " in the descrip- 



