Leptididae. 157 



but in Vol. I, he records nigra Zett. and in Vol. XII, nigrina Wahlb., 

 both sent to him by Stæger; it seenis to me, however, most probabie 

 that Zetterstedt lias committed some error, the specimens in our 

 museal collection are from Stæger, and they all belong to P. obsaira, 

 therefore the specimens from Denmark mentioned by Zetterstedt under 

 P. nigra and nigrina belong with great probability to P. obscura. 

 There is also an indication of, that this is correct; in Vol. VIII, 2992. 

 Zetterstedt says about P. obscura: „Mas oculis (in viva) dimidiate 

 superiori purpurea, inferiori nigra; (observante D. Stæger)". Although 

 Zetterstedt does not record obscura from Denmark he is seen to iiave 

 been aware that the species occured here; he has therefore certainly 

 committed some confusion with regard to this species. 



P. obscura is rare in Denmark, ;only a few specimens have been 

 taken; Dyrehaven, Frederiksdal, Bagsværd; Lolland at Maribo and 

 in Merrits Skov (Schlick). My dates are in June. 



Geographical distribution: — Northern and middie Europe, tow^ards 

 north to the northernmost Sweden, but rare. Zetterstedt records it 

 from i/(i— **/». 



BOMBYLIMORPHA. 



Acroceridae. 



Of this curious little family we have only two species in Denmark. 

 As the members of the family, besides the family characters, common 

 to all species, differ very much with regard to other structures, I nujst 

 premise that the following remarKs concern to some degree only our 

 Danish species. 



The head is small, globular, somewhat flattened behind; it is 

 seated very deeply on the front end of the thorax. The eyes are 

 bare, very large, almost occupying the whole head and touching in 

 both sexes with a long suture. Two or three ocelli present. Face 

 very small, cheeks narrow and the yowls not produced below the 

 eyes. Antennæ inserted near to each other, either on the vertex, 

 above the eye-suture, or far dovvn on the under side of the head near 

 tlie mouth and Ijelow the eye-suture. They are small, two jointed, 

 with an apical arista. The mouth parts I have not been able to 

 exaniine; in some species there is a long proboscis, lying backwards 

 beneath the thorax and abdomen and longer than the body; in this 



