April 1888.] 



AND OOLOGIST. 



51 



in Platte county," and by Dr. Aughey as 

 •'rather frequently seen in Nebraska." Mr. 

 Allen Prime mounted one Xovember, 'S7, cap- 

 tured on the Missouri, where they are common 

 during mijjrations. 



148. .1. marilla tiearclira (Stejn). American 

 Scaup Duck. Xot known to have been found in 

 Nebraska, but is found in Kansas and Dakota, 

 and probably exists in the .State as a rare 

 species. 



149. .4. aiUnis (Eyt). Lesser Scan)! Duc'k. 

 \'ery plentiful during spring migration. Arrive 

 from the first to the last of April. 



l.")0. A. collaris (Donov). Ring-necked Duck. 

 This duck is not on record as found in the 

 State, but is given a place from its well-known 

 distribution, and well known habitat in adjoin- 

 ing states. 



1.51. Glacioiielta clanyula americana (Bonap). 

 American Golden-e}'e. Common from the first 

 of .April till as late as the middle of May. Sel- 

 dom seen in the fall. 



1.53. Charitonetta alheola (I^inn). Buffle-head. 

 Quite common during migration. 



167. Erismatura nihida {\W\\%) . KuddyDuck. 

 Given by Aughey as quite common on the Mis- 

 souri and its tributaries. Baird mentions three 

 specimens; one collected on Wiiite Hiver in 

 May, and two on the Platte in October. 

 (To be Contmued.) 



A Series of Eggs of Accipiter 

 cooperi. 



BY J. p. N. 



The eggs of Cooper's Hawk (Accipite.r cotip- 

 eri), are usually referred to as being unmarked, 

 and so the majority of sets are, but well defiiied 

 spots are not uncommon, and two sets with 

 bold and heavy markings will be referred to 

 below. 



The writer is indebted to the well-known col- 

 lector and naturalist, "J. M. W." (Mi-. C. L. 

 Ra.vson), for all the finest sets in the following 

 series, and the acknowledgeme :t is cheerfully 

 made. Without his help the series would have 

 been far less complete. 



Set I. May 5, lS8i;. Black Hawk ('ouiity, 

 Iowa. Collected by G. P. Four eggs, fresh. 

 Bluish-white. Three of them are entirely un- 

 marked, but the fourth has a few specks of 

 fawn color: 1.70x1.44; l.Sl x 1.44; 1.88 x 1.43; 

 1.81x1.41. 



Set U. May 20, 1881. Black Hawk County, 

 Iowa. Five eggs, incubation eonmienced. 

 Light bluish-white, unmarked, but nest stained : 



1.90x1.53; 1.93x1.49; 1.91xl..53; 1.90 x 1.50; 

 2.00x1.47. One of the eggs is granulated at 

 the larger end. 



Set ni. May 10, 1881. Gildersleeve, Coun. 

 Collected by James W. Lord. Four eggs, 

 fresh. Light grayish-white, unmarked : 1.91 x 

 1.51; 1.87x1.55; 1.98x1.51; 1.88x1.55. 



Set IV. May 20, 1879. Black Hawk County, 

 Iowa. Collected by G. P. Four eggs, incuba- 

 tion advanced. Grayish-white, unmarked, but 

 nest stained: 1.84x1.48; 1.89 x 1., 50; 1.91 x 

 1.49; 1.95x1.52. 



Set V. May 25, 1885. Black Hawk County, 

 Iowa. Collected by H. P. Four eggs, fresh. 

 Grayish-white, unmarked, but nest stained : 

 1.89x1.51; 1.90xl..59; 1.91x1.53; 1.92x1.53. 



Set VI. May U, 1879. Preston, New Lon- 

 don County, Conn. Collected by "J. M. VV." 

 (C. L. KawsonJ. Six eggs, grayish-white, im- 

 maculate. Mr. Bawson writes in regard to this 

 large and beautiful set: " I never saw a cleaner 

 nor so large a set as this one. Wild Cooper 

 seen leaving small nest well out on limb of 

 t.ill chestnut. With rope and irons, send climb- 

 er up, and out on dizzy perch, to find this big 

 clutch in little old nest, partly lined with chips 

 of hickory bark." 1.87x1.51; 1.88x1.48; 1.98 

 xl.47; 1.83x1.47; 1.89x1.47; 1.87x1.48. 



Set VII. May 20, 1883. Near Preston, Conn. 

 Collected by ".J. M. W." (C. L. Rawson). Four 

 eggs, fresh. Grayish-white, unmarked. Mr. 

 Hawsou writes : "First egg seen May 13. On 

 straight chesnut tree. Nest measured by tajie- 

 line and found to be sixty-nine feet from 

 ground. Birds shot at and shy." 1.98x1.56; 

 2.01 xl.56; 2.01x1.52. 



Set VIII. May 24, 1885. Preston, Conn. 

 Collected by " J. M. W." (C. L. Rawson). 

 Four eggs, fresh. Light bluish-white, un- 

 marked. Mr. Rawson writes : "Well repaired 

 nest, in tall many limbed chestnut, in heavy 

 growth. Low land. Bird flushed many times." 

 One of the eggs has a more decided bluish tint 

 than the others : 1.94x1.47; 2.01x1.51; 1.97 x 

 1.44; 1.99x1.48. Slightly granulated near the 

 larger ends. 



Set IX. May 10, 1881. Blue Mountains, 

 Northampton County, Penn. Collected by 

 Shriner. Four eggs, fresh. Very light bluish- 

 white, unmarked: 2.03x1.43; 1.99 x 1.48 ; 1.96 

 xl.51; 1.88x1.51. 



Set X. May 20, 1881. Black Hawk County, 

 Iowa. Collected by J. D. P. Four eggs, incu- 

 bation commenced. Grayish- white, unmarked, 

 but nest stained: 1.83x1.48; 1.90x1.48; 1.97 

 1.50; 1.82 X 1.50. 



Set XI. May 1, 1871. Hartford County, 



