198 



BULLETIN OF THE 



smallest for the four measurements given are orten not those having 

 the longest or the shortest wing, tail, or tarsus, or which measure the 

 most or the least in length or alar extent. The extremes of variation 

 in the size of the wing and tail is given in Tables B, C, and D. * 



Table A. — Variation in General Size. 



Turdus S.vainsoni 

 Tardus Swainsoni 

 Turdus Pall isi 

 Turdus I'.illasi 

 Tardus fuscescens 

 Turdus fuscescens 

 Dendroe a striata 

 Dondroaca striata 

 Da id penns) Ivanica 

 I) i 1 penusy Ivanica 

 Spizella pusilla 

 Spizi Hi pusilla 

 S lyornis fuscus 

 S i) ornis fuscus 

 Sayornis fuscus 

 Pas: erculus savanna 

 Passcrculus savanna 

 Passcrculus savanna 

 1' isserculus savanna 

 Vireo oiivaceus 

 Vireo oiivaceus 

 Uhrysomitris tristis 

 Chrysomitris tristis 

 Melospiz i melodia 

 Melospizi melodia 

 Sialia sialis 

 Si ilia sialis 

 M niotilla v iria 

 Mniotiila varia 

 Cot) le riparia 

 ( lot) le rip iria 

 Passerellu ili ica 

 Passerclla iii ica 

 [ctei us Baltimore 

 Icterus Baltimore 

 Sterna liirundo 

 Sterna liirundo 

 Sterna arctica 

 Sterna arctica [thus 

 Pipiloerythrophthal- 

 l'i pilo erythropli thai. 



Locality. 



Belmont, Mass. 

 Springfield, " 

 Newton, " 

 Newton, " 

 Newton, " 

 Watertown, " 

 Newton, " 

 Newton, " 

 Newton, " 

 Newton, " 

 New ton, " 

 Walt ham, " 

 Newton, " 

 Waltham, " 

 Newton, " 

 Newton, " 

 Ipswich, " 

 Ipswich, " 

 Ipswich, " 

 Waltham, " 

 Waltham, " 

 Newton, " 

 Newton, " 

 Newton, " 

 Newton, " 

 Worthingt'n," 

 Watervide, Me. 

 Newton, Mass. 

 Waltham, " 

 [pswich, " 

 Ipswich, " 

 Springfield, " 

 Newton, " 

 Newton, " 

 Newton, " 

 Muskeget Isl 

 Muskegetlsl 

 Muskegel 1-1. 

 Muskegetlsl. 

 Milton. Mass 

 Cambridge, " 



Mav 27, 

 May 11, 

 Apr. 25, 

 May 25, 

 May 5, 

 Ma) 20, 



Mav 27, 

 May 27, 

 \I ly 20, 

 Mav 20, 

 Jul) 22, 

 Sept.19, 

 Sept 30, 

 Mar. 28, 

 Oct. 9, 

 Apr. 5, 

 June] f, 

 JunelT, 

 JunclT, 

 Maj 30, 



Mav 30, 

 Sept.28, 

 Mar 2 i, 

 Mar 12, 

 Nov. -11, 

 Inly-, 

 Apr 15, 

 Apr 20, 

 Mav 6, 



.Ilinel7. 



,lunel7. 

 Mar. 22, 

 Mar 27, 

 June 6, 

 May 27, 

 June29, 

 June2 i. 

 July 2, 

 Julv 2, 



Collected by 



'68 C .1 Mavnard 

 •62 J. A Allen 

 >,- C J Maynard 

 68 C.J. Maynard 

 68 C.J Maynard 

 68 C J.Maj nard 

 68|C .I.May nard 

 '68 < '..I.May nard 

 68 C .1 Maynard 

 63 C .1 Maynard 

 '68 C . I. Maynard 

 : 67 C J Maynard 

 .st' J .Maynard 

 '68 C J Mavnard 

 '69 C .1. Maynard 

 UN U .1 Mavnard 

 '68 .1. A Allen 

 '68 J. A. Allen 

 68 .1. A Allen 



68 C J. Maynard 



'68 CJ M iv nard 

 68 .1 Maynard 

 '63 C .1 Maynard 

 68 C .1 M lynard 

 '67 C.J .M lynard 

 '63 C.II Hamlin 

 '64 W. II Niles 

 us c .1 Maynard 



18'C.J Mavnard 

 '68 J. \ Allen 

 ■67 d A Allen 

 US .1. A Allen 

 Ms C .1 Mavnard 

 US C .1 Mavnard 

 '68 C.J Mavnard 

 '68 .1. A Allen 

 T,S ,1 A Allen 

 '68 .1. A A Ten 

 lis .1 A. Allen 



- II C Daring 



- L. Agassiz 



7.70 12.65 

 6.62 U.4U 

 7 3i 12.83 



7."" 10 64 

 7.81 13.70 



7.IIU 11.115 

 5 17 s 75 



5.71 9 3 

 5.40 825 

 5 00 7 51 



on. i - ;;_ 



5.06 7.62 



7 50 11.40 

 7 25 L2.6 

 6.51 10.32 

 5 85 o 73 

 5.83 7.75 

 5.35 7.75 

 5.75 it. 75 

 6.55 lo or, 

 6.25 ss 



5 35 0.40 

 5.00 8.60 

 75 Hi:, 

 tin. i 8.25 



6 50 11.10 

 7on L2.25 

 540 9.00 

 5.3D 3.25 

 5.45 11 oo 

 5 ■-'. 1 ' 5? 

 7.50 11.65 

 6.80 lo so 

 son 12.25 



7 3-11 15 



15 50 31.S5 

 14 90 29 30 



16 1- 32 15 

 14.40 29.00 



s 55 12.25 

 7.50 l" -J" 



4 20 

 3 80 



3 8 i 

 3.00 



4 16 

 3.58 

 •j 8 ' 

 310 

 2.01 

 2 35 



2 02 

 •2 00 

 360 



3 82 

 3 20 



3oo 

 2.83 

 3 33 



2 1.7 

 10,1 



355 



1.70 



2 00 



2.07 



1 75 



2.. ,o 

 - '12 



3.00 

 2.20 

 2.85 



3.00 2 26 



2 so 2 lo 

 2 51 L.95 



2 78 2.0.7 



3 1-2 16 



3 22 2.10 

 3.002.00 

 2.65 1 85 

 2.652.80 

 2.35 2.68 



3 75 2.45 



4 102.60 

 3 00J2 17 

 2.-; 2.05 



IT, 2.1o 



3.75 1 86 

 3-65 2 



3 40 2 50 

 1 on:; lo 



3.56 2.55 

 11.30 7.00 

 10 io 5 50 

 ll.iio 7.50 

 L0.70 ''.30 



3.57 3.85 

 3.34 3.60 



I 



As a large proportion of the specimens mentioned in some of the fol- 

 lowing tallies (most of Tables A to G) were taken during the season 

 of their migration, they may have originated at widely different locali- 

 ties, and thus the differences indicated may lie in some measure due 

 to geographical causes. In other cases, however, all the specimens 



* The measurements pven j n this pnper were all taken eiihcr from fresh specimens 

 by the collector, or by myself from specimens preserved in spirits. 



