236 The American Naturalist. [Mareh, 
of Penæus is not formed on the animal that bears it, but in the dilated 
end of the ductus ejaculatorius as a secretion, and that probably it is 
carried over to the female during copulation. It has no cellular struc- 
ture whatever, and is found in a rolled-up condition in the ducts of the 
males. 
It was described by Spence in the Japanese variety of P. canalicu- - 
latus, and is to be found, though not so conspicuously, in P. semisulea- 
tus, P. curvirostris, P. monocerus ? and P. sp.— (The Japanese mayebi). 
Dr. Kishinouye’s observations were made chiefly upon P. canaliculatus 
and P. monoceros ?—F. C. K. 
Nerve-endings in the rennet glands of the Vertebrate 
Stomach.'—The nerves spreading out over the serous membrane of the 
vertebrate stomach arise from the plexus of Meisner and form two other 
plexi—one under the rennet glands, the other below the ephithelium 
of the stomach. The simple nerve fibers form a plexus about the 
membrana propria of the glands and now and then pierce it, spreading 
their fine branches out around the cells. Each branch ends in a vari- 
cosity, but does not penetrate the cell as supposed by Nawalichin and - 
some others. In this conclusion Dr. Kytmanow, the author of the 
paper cited, is in agreement with Erich Mueller, Smirnow, Arestein 
and others who have studied the peripheral or epithelial terminations 
of nerve fibers. His study upon the stomach of the cat was undertaken 
to determine surely what Erich Mueller had left as uncertain, namely, 
whether the fibers terminate inter- or intra-cellularly. For this he.em- 
ployed the Golgi, methylen blue and gold chloride methods. With the 
first he was unsuccessful, but with the other two, especially with the me- 
thylen blue, he arrived at the conclusion that has been given.—F. 
C. Kenyon. 
The Breeding Haunts of Ross’ Gull.—One of the valuable 
ornithological facts that the “Hero of the White North,” Nansen, 
has to relate, is that he has discovered the breeding station of the 
circumpolar gull, Rhodostethia rosea Macy. The small group of islands 
which he calls the Hirtenland group, where he found the birds in large 
numbers and breeding, lie in 81° 38’ N. Lat. and 63° E. Long. They 
seem to occupy a position within an area laid down by Payer as Wilczek 
land. 
Proper name for the Western Horned Owl of North 
America.—In the “ Auk” for April, 1896, p. 153 I published a rev! 
1 Intern. Monatsch. Anat. Phys., XTH, 402-5. 
