iyo(5.] 253 



Lih. par villa (Prodr., No. 1637). LiheUula pay^vula nigra, iiiaculis 

 luteis ; abdomen subcylindrico. Inter minores ; variat alis basi 

 nigricantibus et immaculatis. 



His description is by no means full, but it must be taken into 

 consideration that he knew all the species of Sympetrum and also 

 Leuc. rublcunda, L., and Leuc. pectoralis, Cbarp. This last named 

 species is referred by him as a variety of Leuc. riihicunda, but has 

 received no name from him. Leuc. duhia is far from rare in the 

 Erederiksdal district, so that there can be no doubt that Miiller knew 

 and had the species when he described his L. parvuJa. I therefore 

 propose that Miiller's name shall take the place of Lindemann's. 

 Dr. Hagen also remarks (Nat. Tidschrift, III E. IB.) that Leuc. duhia 

 is the only species known to him that could lit Miiller's description. 



Leucorrhinia caudalis, Charp., was without doubt known to 

 Miiller, and described by him under the name Lib. triedra (Enum., 

 No. 19, Fn. Fr., No. 545, Prodr., No. 1630). Miiller's description is 

 as follows : Lih. triedra alis omnibus basi flavis puncto raarginali 

 nigro, abdomine triangulari. 



y8 Libellula alis posticis basi flavis ; abdomine triangulari. 



y Libellula alis nullis basi flavis abdomine triangulari. 



In Miiller's private copy of " Fauna Fridrichsdalina " is added 

 the following in his own handwriting : — 



Alis nullis basi luteis, puncto marginali ferruginea, and: Alis 

 omnibus basi luteis, puncto marginali albido. 



Leuc. caudalis, Charp., is the only European species that possesses 

 all these characters, and as the species is still found in the district, 

 I propose that Miiller's name takes priority. 



There has, however, been some doubt as to JEschna squamata, 

 Miill. (Enum., No. 22, Fn. Fr., No 546, Prodr., No. 1361). Dr. Hagen 

 remarks (Nat. Tidschrift, III R. IB) that Miiller's species is either 

 u¥j. mixta, Latr., or else ^. ccerulea, Strom., and in this he is un- 

 doubtedly right. Kirby (^^yn. Cat. of Neur. Odon., p. 87) gives it 

 in place of ^. coerulea, and it must be remarked that the description 

 fits M. ccerulea better than ^. mixta, but ^ ccerulea has not been 

 found, and probably never will be found, in Denmark; and again, 

 ^. ccerulea is on the wing in July and August,* whilst Miiller states 

 in his description of JBl. squamata " Medio Septembris." Taken into 

 consideration that Miiller knew all the Danish species of JEschna., 



* In Scotland >E. ccerulea is well on the wing in early June. ^. mixta is essentially a 

 September insect. -G. T. P. 



