ce familiar ne European forms, at once recognized it as the Hy 
1 88 ; ZOOLOGY. 
maxille) indicates that it must be composed of four segments, 
while an examination of the head of an adult insect indicates 
that all the different pieces composing it cannot be referred to a 
single segment. Would it not be better in a “popular work” to 
tell the truth of the matter, and thus lead the reader to take an 
interest in the study of the morphology of insects, that highest 
` department of biology, than to lead him blind-fold past some of 
the grandest trutlis in science? 
4. My good friend is, quite wrong in intimating that those 
larvee which have heads “ without the slightest trace of a division. 
into ‘subjoints,” and are “blind or even destitute of antenne,” 
never had cephalic segments.. If he will study Weismann’s 
famous work on the embryology of insects, he will see that in the 
embryo of the flesh fly, the four segments and appendages are 
as distinct as in the embryo of the bee, Hydrophilus, or other 
beetles. The appendages become obsolete, though not wholly so, 
just before hatching, and Mr. Riley will probably agree with me 
that the differences between a “headless” maggot and a caterpillar 
or bee larva are probably due to differences in their mode of life. 
The organs are all there at tlie outset, in the embryo. I think Mr. : 
Riley will set a higher value on ‘‘embryological data,” after pe- 
rusing the works of Rathke, Herold, Kölliker, Zaddach, Leuckart, 
: Huxley, Claparéde, and especially Weismann and Kowalevsky- 
Whether my criticism on the matter of the apple bark louse 
` was hasty and oorte I leave to others to ‘decide, —A- S. a 
PacKarD, Jr.] oe 2 
À NEW NORTH ÅMERICAN Bn —On the 5th of July last 
Ludovic Kumlien, a son.of Thure Kumlien, the well known ornithol- 
: ogist of Wisconsin, shot on Lake Koshkonong, imthe central part 
of southern Wisconsin among a flock of the Hydrochelidon fissipes, 
a bird which he at once recognized as something entirely new pa i 
our fauna. It was a mature female and was found to contain well : 
developed ova, though not fally grown. Mr. Kumlien, Sr-, wh? is 
a eucoptera and this determination has since bea con- 
firmed | ay Baird. o 
The H. leucoptera is a well known European form more COM- — 
mon = southern Pao eee farther north and has never before 
hat one should be ound 
