STATISTICAL BIOLOGICAL STUDY. 



65 



Various cranial dimensions, Lee and Pearson, '01. 



Other Organs. Coefficient of variability of bones of skele- 

 ton of French and Naquada (C. of limb-bones, 4.58-5.57), 

 Warren, '97; appendicular skeleton, Pearson, '96; finger- 

 bones, Lewenz and Whiteley, '02; seriation of position of 

 spinal nerves, Bardeen and Elting, '01; various organs in 

 diverse races, Brewster, '97, '99. 

 Mammalia. 



Relative variability of specific and generic characters in 

 various mammals the former being greater, Brewster, '97; 

 seriation of number of Miillerian glands in Sus scrofa, n, 2000; 

 A, 3.501 .025; a, 1.680.018; C, 48.0, Davenport and Bui- 

 lard, '96. 

 Aves. 



Seriations of various proportions of N. A. birds, Allen, '71 ; 

 characters of Lanius (''shrike") and its races, Strong, '01; 



Lot. n 



Shrike, length L. wing $ ......... 168 



" ? ......... 112 



tail length $ ............. 141 



" 



bill length, $ 



? 



95 

 164 

 112 



............ 



" depth, $ ............ 126 



? ............ 85 



melanism of crown, $ ..... 144 



" " ? ..... 99 



" upper tail-coverts $ 142 



" ? 104 

 Curvature of culmen .............. 



Eggs, proportions: Passer domesticus, Bumpus, '97, Pear- 

 son, '02 e ; various species, Latter, '02. 



Length, mm. Breadth, mm 



A a C A a C 



22 .40 

 29.44 

 27.44 

 29.78 

 21.55 

 20.01 

 19.72 



21.82 1.195 5.47 15.51 .525 3.38 



21.32 

 20.12 

 20.22 

 17.14 



1.05 

 0.810 

 0.857 

 0.598 



4.92 

 4.02 

 4.24 

 3.49 



15.34 

 14.73 

 15.43 

 13.33 



.415 2.81 

 .477 3.09 

 .358 2.69 



