HUNGERFORD: AQUATIC HEMIPTERA. 15 
the case, this same year (1816) marks the appearance of 
Savigny’s ‘“Memoires sur les Animaux sans vertebres.”’ It is 
not, however, in the same class with Lamarck. The following 
year Leach (1817) published an important paper in the Trans. 
Linn. Soc. London, and in 1818 Fallen’s ‘‘“Monographia Cimi- 
cum Sueciz” appeared. These are not biological in nature, but 
must be mentioned because of their important relation to the 
field. Eschscholtz in 1823, and Le Peletier and Serville in 1825 
published works. Meneville (1829) treated water bugs in vol- 
ume 13, giving colored plates of them in volume 14. Schum- 
mel (1832) and Laporte (1833) are responsible for a few 
notes, but a profound and splendid work by Dufour in 1833 
marks this period as an important one. His paper, under 
the broad title “Recherches anatomiques et philosophiques sur 
les Hémiptéres accompagnees de considerations relatives a 
Vhistorie naturelle et la classification des insectes,’”’ presented 
much new and interesting biological data. Two years later 
Burmeister’s “Handbuch der Entomologie” appeared. And 
in 1836, just a century after Reaumur, we have Brulle’s “His- 
toire Naturelle des Insectes.”” Volume IX treats of our bugs. 
Blanchard’s set bears the same title and came out in 1840. 
1843 is a date to be remembered by all students of the Hemip- 
tera, for in that year Amyot and Serville set forth in their 
treatment of the Hemiptera a most thorough review of all 
earlier work (they omitted Roesel). After one has carefully 
combed through the early works for biological notes it is 
most satisfying to see how well these writers digested and set 
down the work of their predecessors.* Since their time there 
have been important contributions to the biology of aquatic 
Hemiptera. Many are the notes and short papers by various 
writers, but for extensive contributions we are indebted to 
afew. Uhler, in this country, stands as an early and a most 
interesting writer on the behavior and habits of this special 
group. Kirkaldy, in England, published in the “Entomologist,” 
from 1896 to 1909, a series of articles under the title “‘Guide 
to the Study of British Water Bugs.” This series should be 
read along with Uhler as the foundation material for any one 
taking up the study of water bugs. To these names we should 
add that of Bueno, who has published more life history studies 
than any other writer. His writings are most entertaining 
* Glover has given us in his own handwriting something of the same thing in English. - 
