156 PROCEEDINGS OF THE ACADEMY OF [1896. 



Clivicola riparia (Linn.). Bank Swallow. 



I can find no evidence of a spring molt in this species, but the 

 plumage shows considerable abrasion at this season. I have seen 

 no molting specimens. 



Females. — Resemble the males at all times. 



Stelgidopteryx serripennis (Aud.). 



The above remarks apply equally to this species. 



Family LANIID^. 



Lanius borealis Vieill. Northern Shrike. 



There seems to be a partial molt in spring, but not extensive 

 enough to produce a change in the plumage. One specimen, taken 

 March 20, shows new feathers coming in on the breast and head. 



Lanius ludovicianus Linn. Loggerhead Shrike. 



A specimen taken October 20, Haddonfield, N. J. (No. 1 ,429, 

 Coll. W.iS.), which shows no sign of molt on the wings, except the ter- 

 tials, and appears, therefore, to be a bird of the year, has nearly 

 completed the body molt aud has likewise renewed the tail. Spring 

 specimens show a slight renewal of feathers, as in the preceding spe- 

 cies. 



Family VIREONID^. 



The uniform coloration of the feathers in the Vireos helps to ob- 

 scure what little abrasion takes place in the plumage ; and notwith- 

 standing the fresh appearance of the spring dress, I do not think 

 there is a spring molt of any great extent. The few winter spe- 

 cimens that I have examined show no signs of molt. The young 

 in the first winter are like the adults, and the males and females are 

 alike. There arg, therefore, only three plumages : first, winter and 

 nuptial, the last two are often scarcely distinguishable. 



Vireo olivaceus (Linn.). Red-eyed Vireo. 



Spring birds are, perhaps, duller colored, but show but little 

 signs of wear. A specimen taken Aug. 27 has nearly completed 

 the molt of body feathers while it is also molting the tail. The 

 wings show no signs of molt, except the tertials which are generally 

 renewed with the body plumage, so that the specimen must be a 

 bird of the year. 



Vireo gilvus (Vieill.). Warbling Vireo. 



Vireo philadelphicus (Cass.). Philadelphia Vireo. 



Molt as in the preceding. The winter plumages have respectively 



