No. 3.] 



SENNETT ON THE ORNITHOLOGY OF TEXAS. 



403 



lows: "The only satisfactory test, however, which I have been able to 

 apply in determining to which race clonbtfnl specimens should be re- 

 ferred, is that of size, as follows : — Var. erythrocerciis. — Wing-, average 

 3.77 5 tail, 3.82; bill from nostril, .01; tarsus, .80. Habitat: Eastern 

 Tropical America, from Paraguay to Southern Mexico, but chiefly south- 

 ward of the latter country. Var. coopcri. — Wing, average 4.15 ; tail, 

 4.25; bill from nostril, .00; tarsus, .92. Habitat: Mexico, including Eio 

 Grande Valley and Texas, and Guatemala." Now, ]\Ir. Kidgway's sizes 

 of var. erythrocercus were obtained from six specimens in the Xational 

 Museum, and his sizes of var. cooperi from eighteen specimens, of which 

 aU but three, Avhich are in his own collection, belong to the National 

 Museum. Out of the number, two only were from the Rio Grande, and 

 one of those alone had dimensions given. 



There is no notice whatever of my specimen from Hidalgo, Texas, 

 May 9, 1877, which is in the National Museum, and which is the first 

 record of its existence within. our limits, and which Mr. Eidgway no 

 doubt examined when he coincided with Dr. Cones as to its identifica- 

 tion. That specimen measures as follows: sex, 5 ad.; U. S. Museum; 

 locality, Hidalgo, Texas; date. May 9, 1877; wing, 3.90; tail, 3.03; 

 tarsus, .85. 



It will be seen, had size alone been fallen into consideration and the 

 specimen taken into account, it would have appeared in his list of var. 

 erythrocercus. I procured by this year's trip twenty -two specimens, a 

 number almost equalling the number examined by Mr. Eidgway of both 

 varieties. I herewith give their sizes, carefully taken from the dry 

 skins. 



Locality. 



Lomita 

 ....do . 

 ....do . 

 ....do . 

 ....do . 

 ....do . 

 ....do . 



...do . 

 ....do . 

 ....do . 

 ....do . 

 ....do . 

 ....do . 

 ....do . 

 ....do . 



...do . 



...do . 

 ....do . 

 ....do . 

 ....do . 

 ....do . 



...do . 



Date. 



April 10 

 April 21 

 April 28 

 April 28 

 April 29 

 April 29 

 April 30 



JNIay 



May 



.May 



May 



May 



May 



May 



aiay 



May 



May 



May 



May 13 



JMav 16 



May 22 



May 22 



Wing. 



4.16 



4.10 



:3.95 



4. 23 



3.90 



4.00 



3. 95 



3.85 



10 



,05 



.00 



rs 



03 

 3.90 

 4.08 

 3.70 

 3.98 

 3.82 

 3.87 

 3.93 

 4.00 

 3.75 



Tail. 



3.85 

 3.55 

 3.95 

 4.00 

 3. 65 

 3.85 

 4.00 

 3.68 

 3.85 

 3.90 

 3.83 

 3. 62 

 3.83 

 3.75 

 3.85 

 3.66 

 3.80 

 :3.60 

 3.83 

 3.80 

 3.75 

 3.60 



Bill from 

 nostril. 



.61 

 .70 

 .66 

 .62 

 .62 

 .61 

 .65 

 .63 

 .59 

 .65 

 ,70 

 .60 



.m 



. ()5 

 .61 

 ,60 

 .6i 

 ,62 

 ,60 

 ,61 

 ,65 



Tarsus. 



.85 

 .89 

 .80 

 .80 

 .85 

 .82 

 .82 

 .82 

 .83 

 .81 

 .87 

 .80 

 .85 



.87 

 .82 

 .84 

 .87 

 .83 

 .80 

 .88 



