1885.] 



195 



in reference to the characters of the two older species, that Leeuwen- 

 hoecJceUa, with the exception of the white belt on the antennae, and the 

 rather more stumpy, shorter wings, agrees precisely with the preceding 

 species {LatreiUella) ; only, in his diagnosis of Leeuwenlioeckella^ he 

 mentions that the slender fascia is often interrupted. 



" J have not at hand for comparison Stainton's Insecta Britannica 

 and Manual, but Mr. H. W. de Graaf observes, in the " Bouwstoffeu 

 voor eene Fauna van Nederland," iii, p. 264, in a note under No. 181, 

 that LeeuwenJioecJcella is only distinguished by the broad white belt 

 before the tip of the antennae. 



"Von Nolcken, in his ' Lepidopterologische Fauna von Estland, 

 &c.,' p. 602, goes still further, and maintains that the ? LatreiUella 

 has also the antennas with a white ring. This opinion seems also to 

 have been shared by von Heinemann, for he only assigns ' entirely 

 dark brown ' antennae to the <$ LatreiUella, and says that the antennee 

 of the $ before the tip are whitish, as in both the sexes of Leeuwen- 

 Jioeclcella. 



" It is thus tolerably difficult to distinguish these two species, and 

 as constant characters there remain merely the stumpier form and 

 smaller size of Leeuicenlweckella. both points which remind one too 

 much of the favourite expressions of the French Entomologists, ' un 

 peu plus ' and ' un peu moins,' to raise in our bosoms any great feeling 

 iof confidence. 



" As to nodosella, Heinemann maintains the difference in the 

 istructure of the antennae, but he gives no difference in the colour and 

 Imarkings of the anterior-wings, his diagnoses of the wings of all the 

 species being the same, and he says in all of the silver markings 

 'drop-shaped.' Nodosella in size comes between the other two. 



^'' LeeuwenlioeckeUa had already long been known as indigenous in 

 our country, since it is mentioned in the first part of the Bouwstoffen, 

 p. 45. LatreiUella was added to our lists afterwards, see Bouwstoffen 

 iii, Z. c. I had myself only met with this last named species, which 

 occurs in April on the dunes, flying freely by day. Of LeeuwenJioecJcella 

 I was only acquainted with a very small specimen, brought to me from 

 j Switzerland by Dr. Piaget, but had not taken the insect. Never had 

 I expected that the species occurring in Dalmatia, Spain and Italy 

 {(see Staudinger and Wocke), wofZoseZZ«, would be met with in this 

 'country. I was, therefore, very agreeably surprised to receive from 

 'Heer van der AVulp a Pancalia with thickened, and, in front of the 

 '^thickening, broad white antennae, which I could only refer to nodosella, 

 'and which, according to the label on the pin, had been taken near the 

 i Hague, May 6th, 1865. 



R 2 



