248 A SPEING AND SUMMER IN LAPLAND. 



describing the F. lanarius, does not say anything 

 regarding the colour of the head, Nilsson, in 

 describing the " slag falk" (F. lanarius, Lin.), 

 distinctly says, "head white, tinged with rusty 

 yellow;' 5 and except that he gives the length of 

 the old female twenty inches, his general descrip- 

 tion agrees with Dr. Bree's description of the 

 lanner falcon (Falco lanarius, Schleg.) of his 

 admirable work, p. 37. LinnaDus' description of 

 the lanner was from a younger bird, killed in 

 Sweden. In Nilsson' s description of the Falco 

 jer-falco (Lin. and Mis.), he does not use Lin- 

 naeus' synonym of Falco lanarius, but he gives to 

 it the synonym of Falco rusticolus, Lin. Faun, 

 p. 19 (older female) ; and also Falco jer-falco, 

 Lin. Faun. p. 22 (young bird). 



Neither Nilsson nor Sundeval will allow that 

 there is more than one species of jer-falcon in 

 Sweden, in describing which Nilsson uses all these 

 synonyms :— " Falco gyr-falco Islandicus, candi- 

 cans ; Groenlandicus rusticolus, fuscus, umbrinus ;" 

 and he gives it the Swedish names of jakt-falk, 

 hort-falk, bla-falk (the name by which this dark 

 Falco gyr-falco ISTorwegicus is known on the Nor-, 

 wegian fells) ; and he also gives to the" same bird 

 the Lapland name of riefsakfalle — thus clearly 

 identifying it with our Lap " rip spenning," which 

 word has precisely the same meaning as the rief- 



