296 [February, 



" Having no reason to doubt the correctness of the locality indi- 

 cated by my conscientious and worthy colleague, I had very nearly 

 announced this third species as new for our Fauna, when, by a careful 

 comparison and attentive perusal of the descriptions and notes already 

 mentioned,* a new idea occurred to me, for I began to suspect that 

 in the three species of PancaUa, so exactly alike in colour and markings, 

 I had before me merely the two sexes of one species, and that when 

 the loosely-sitting scales which cause the black thickening of the 

 antennae in nodosella get dissipated by the insect being some time on 

 the wing, it sinks into LeeuioenhoecTcella. The more stumpy form, the 

 protruding ovipositor, and the divided wing-hook showed me that 

 nodosella was the ? , whilst in the specimen of the somewhat more 

 slender Latreillella the wing-hook is single. 



"My suspicion seemed thus approaching certainty, and was still 

 further confirmed by my finding in April, 1875, on the Wassenaar 

 dunes a beautiful specimen of the ^ and an equally fine $ close to- 

 gether. The phrase used by von Heinemann in reference to nodosella^ 

 * angeblich in Nordosten Deutschlands ' (alluded to as in the North- 

 East of Germany), now becomes intelligible. We have thus in our 

 (at present sole) European species of Fancalia the singular instance 

 of a Lepidopteron, of which the $ has the antennse more ornamented 

 than the ^ , whilst otherwise judging from the instances known to me, 

 the reverse is the case. 



"The antennae of the ^ are very thick, almost naked, filiform, 

 unicolorous dark bronzy-brown, similar to the palpi, head and thorax ; 

 those of the ? are thinner, and are well described by Herrich-Schiiffer 

 (see under nodosella) ; the palpi, head and thorax rather paler than 

 in the ? , 



" The anterior-wings are very dark orange-brown, with the mar- 

 gins and the base to the fascia black-brown ; this fascia, which like 

 the other markings, is finely edged with black on the side towards the 

 base and reddish-silvery, is slightly curved, and may be interrupted in 

 the middle (see Treitschke, ix, 2, 167, (EcopJwra SchmidteUa and Erey,l^'lii 

 I. c). I have no such specimen in my series. At two-fifths of the! Not 

 costa is a straight streak that does not reach half across the wing;; ^^ 

 opposite to this, but not always (it is entirely wanting in two of my. 

 ten specimens), is a small spot on the inner margin. In the caudal] 

 hook is a streak either perpendicular, oblique or curved ; as a con 





* Excepting the last part of von Heinemann's work, with which I have only become ac- 

 quainted qxiite lately. 





