264 THE SCOTTISH NATURALIST 



gape bristles, the feathers at base of the lower mandibles and on the 

 lores, chin, and upper throat, which are moulted. Second winter 

 plumage Acquired by a complete moult. Second summer plumage 

 Acquired by abrasion. The down on the chin has been gradually worn 

 away during the winter until by January this region is practically bare. 

 Adult winter and summer plumage Acquired in exactly the same way 

 and at the same periods as the second winter and second summer plum- 

 ages. The rook remains with its face fully feathered until January, when 

 the first summer plumage is assumed. It then becomes clothed with 

 down, and it is not until the second year that this region becomes 

 practically bare. 



In the. Journal of Conchology for October 1913 (pp. 124-128), J. T. 

 Marshall continues his paper on "Additions to 'British Conchology.' 5 ' 

 Scottish localities are given for the following species and varieties : 

 Pec ten sulcatus, Mull. ; P. varius, var. purpurea, Jeff. ; P. opercularis, 

 van audouinii, Payr. ; P. pes-lutrcc, L. ; P. ligrinus, Mull. ; P. similis, 

 Lask. ; Ammussium hoskynsi, Forb. ; Lima sarsii, Lov. ; L. subovata, 

 Jeff. ; Modiolaria marmorata, Forb. ; M. discors, var. semilarvis, Jeff. ; 

 M. nigra, Gray ; Nucula sulcata, Bronn ; N. tumidula, Malm ; N. 

 corbuloides, Seg. ; Malletia obtusa, M. Sars ; Leda lucida, Lov. ; L. 

 lenticula, Moll. ; L. frigida, Torell ; Limopsis aurita, Brocc. ; L. minuta, 

 Phil. ; L. cristata, Jeff. ; Area obliqua, Phil. ; and A. nodulosa, Mull. 

 [Mollusca.] 



In the Entomologists Record for October, T. Hudson Beare 

 publishes (p. 258) an interesting note on Myrmica ruginodis. At Nethy 

 Bridge, in August, a number of winged males and females were observed 

 on the roadway, all the latter being paired with the males, while in each 

 case three or four other males were struggling to displace the paired 

 ones of the same sex. This "marriage-flight" was observed on a hot 

 day at 2.30 in the afternoon. [Hymenoptera.] 



T. Hudson Beare records in the October number of the Entomolo- 

 gisfs Record (p. 258) the discovery of two strong nests of the ant, 

 Formica exsecta, at Boat of Garten, near Loch Vaa, on 12th August. 

 He remarks that this is a new locality for the species. [Hymenoptera.] 



J. H. Ashworth describes four females of Daphnia pulex, in each of 

 which one of the antennules showed male characters in more or less 

 marked degree. The abnormal appendages, in two cases, resembled 

 those of CeriodapJinia. The broods of two of the abnormal specimens 

 were examined and found to be normal, notwithstanding that in one 

 case as many as 383 close relatives, including 281 direct descendants, 

 were known. (Proc. Roy. Soc, Edin., v., 33, iii., p. 307.) [Crustacea.] 



