1897.] Entomology. 911 
144. Merula migratoria (Linn.), American Robin. Abundant sum- 
mer resident. (Earliest spring arrivals: Jan. 26, 1887; Feb. 21, 1888 ; 
March 13, 1889; March 1, 1890; Feb. 24, 1891. Bulk arrived: 
March 13, 1887; March 10, 1888; March 14, 1889. Latest fall 
occurrences: Dec. 18, 1885; Nov. 25, 1887; Dec. 31, 1889; Nov. 1, 
1890). To judge from these data, it would seem probable that a few 
remain through the mild winters. 
145, Sialia sialis (Linn.), Bluebird. Common resident, but now not as 
numerous as at the commencement of the period of my observations. 
It migrates in severe winters. 
—Tuos. H. MONTGOMERY, JR., Pu. D. 
May 26, 1897, Wistar Inst. of: Anat., Philada. 
ENTOMOLOGY. 
Scudder’s Guide to the Orthoptera. —Mr. Scudder has again 
placed the workers in systematic entomology under obligation to him, 
by the publication of an exceedingly useful manual of Orthoptera. 
This little volume consists of analytical tables, bibliographical notes, 
and a list of papers treating of North American Orthoptera. The 
scope of the work is well stated by the author in his preface as fol- 
lows: ; 
“ The following tables and bibliographies are published, not as a final- 
ity, but for temporary use by students of Orthoptera in this country, who 
have few means for working up their collections. The author contem- 
plates a general work on the classification of our Orthoptera. of which 
this is merely a prodromus, and which may serve its purpose until the 
material at hand has been more thoroughly studied ; the frequent de- 
mands made for information have prompted it. The greater number of 
tables are based upon those of Stal, Brunner and de Saussure, but these 
authors are in no way responsible for the form in which they here ap- 
ar 3) 
The work will be warmly welcomed by all having collections of Or- 
thoptera. For the first time, it is now possible for one not a specialist 
in the Orthoptera, to determine the North American genera of all 
families of this order. 
1 Guide to the Genera and Classification of the North American Orthoptera 
found north of Mexico. By Samuel Hubbard Scudder. Cambridge, Edward W. 
Wheeler, 1897, 8vo, pp. 89, $1.00. 
Do- 
