a. II. 1904. Morton. — Lindberg. 69 



ment is produced in the middle into a small triangle, on either 

 side of \vhich is a flattened plate with rounded, fuscous outer 

 margin which is apparently slightly crenate. Lateral valves 

 small but distinct, rounded on their apical margin. 



Length of body, 6 mm. Expanse of forewings 20 mm. 



This insect was discovered by Herr Stud. M. Weurlan- 

 der at a little brook near Ekenäs, and was subsequently taken 

 there in numbers in the months of July and August by Herr 

 A. J. Silfvenius to whom I am much indebted for the ma- 

 teria! from which I have described this interesting species. 



Leptocerus exiisus belongs to the group whieh contains 

 Tj. <ii.ssimilis, aurens and riparii(s. In appearance it most closely 

 resembles the first-named, while in structure it is periiaps 

 nearer riparius. The shorter superior appendages will serve to 

 distinguish it from L. dissimilis. In riparius the forcipate 

 appendages are not simple as in the present species, but they 

 are asymmetrical and at the apex split up into teeth.» 



Amanuensen Harald Lindberg förevisade en af honom 

 samman.ställd samling af 



Subfossila växtrester, funna i Finlands kärr och mossar, 



hvilken samling var afsedd att utställas i den af Finska 

 Mosskulturföreningen anordnade afdelningen af den stora ut- 

 ställning för mosskultur och torfindustri, som skulle äga rum 

 i Berlin den 15 — 21 februari. Samlingen, hvilken innehöll 

 delar af sä godt som alla i Finland anträffade subfossila växter, 

 omfattade följande 95 arter: ^ 



Algse. 

 1. Chara cfr. aspera, Jorois, Järvikylä. 



^ Flertalet af de i nedanstäende förteckning upptagua fyndorterna 

 aro af amanuensen Harald Lindberg beskrifna i Mosskulturföreuingens 

 ärsböcker, Jfr Arsboken för 1897 sid. 94 — 105: Tetrinsuo, Tattarmos.sen, 

 Bymossen, Pelmaanneva, Levinneva; Arsboken 1898 sid. 98 — 154.: Sak- 

 kola; Arsboken 1899 sid. 178—213: Järvikylä; Arsboken 1900 sid. 185— 

 257: Järvikylä, Lojo, Inga, Kalkulla, Arsboken 19ul sid. 31 — 41 : Panelia. 



