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ZOOLOGY. 493 
cardiac chamber, then penetrates into the heart, of which the di- 
mensions are very considerable. It is then driven into tubular 
arteries with resistant walls, the arrangement of which is exceed- 
ingly complex, with frequent anastomoses, and of which the ter- 
minal ramifications are of marvellous tenuity and abundance. He 
has also found, as Prof. Owen had intimated, that the nerves are 
completely ensheathed by the blood vessels. — Annals and Mag. 
Nat. History, Feb., 1873 
Tue Rose-preastep Grospeak (Goniaphea Ludoviciana).—I 
wish to testify to the benefits this bird confers by destroying the 
“Colorado Potato Bug” (Doryphora decem-lineata Say), cutworms, 
and other insects. I have often seen the birds feeding in company 
with robins, bluebirds, orioles, tanagers and other birds, in vari- 
ous parts of the state, where they appear to be abundant, particu- 
larly in spring. They frequent open timber, fields and ploughed 
lots away from travelled roads. Their note resembles that of the 
scarlet tanager; when flying, the white on the wings causes them 
to look something like the red-headed woodpecker. I have never 
Known them to eat green peas, as Mr. Allen says that the black- 
headed grosbeak, their nearest ally, does. — Henry H. Mares, 
Kalamazoo, Michigan. 
Canaries Nestrxc.— Confined by illness I have for several days 
watched a pair of canaries making inir nest. They are now 
lining it, using feathers for that pur pose, a portion being from their 
own bodies, though not (I think) purposely detached. The rest 
are feathers which I have put on the bottom of the cage. I was 
Struck with this observation, that every time a feather was taken 
to the nest, it was first deliberately dipped into the water cup, then 
put in its place, when the building bird, most frequently the female, 
Would drop into the nest and then wriggle the body, to give shape 
to the structure. The soaking of the feathers was evidently a 
matter of design, namely, to cause them to lie in place, and receive 
the proper bend from the motion of the bird’s body. I think this 
indicates considerable intelligence in these little pets.— S. LocK- 
Woop, February 14 
Ay Aquatic Bompycrp Morn. — Mr. Bar of Cayenne has for- 
warded to the Entomological Society of France, descriptions and 
Specimens of the various stages of an interesting Bombycid. The 
larva lives under stones in streams and rises to the surface for 
