904 THE AMERICAN NATURALIST. [Vor. XXXIV. 
In the Proceedings of the Manchester Institute of Arts and Sciences, 
Vol. I, 1899 (1900), Mr. E. J. Burnham gives an annotated list of 
twenty-eight species of Anisoptera taken in the vicinity of Manchester, 
N. H. To the same publication, and also from the vicinity of Man- 
chester, Miss Susy C. Fogg contributes a list of thirty-five Orthoptera. 
In Novitates Zoologice, Vol. VII, No. 2, August, 19oo, Warren 
describes more than two hundred and forty new species of Dre- 
panulidz, Thyridida, Epiplemide, and Geometridz from South and 
Central America. More than three-fifths of these new species are 
described from uniques, and of the others only a few are represented 
by adequate series. 
K. W. Verhoeff (Zool. Anzeiger, Bd. XIII, p. 465) reports that 
railroad traffic in the neighborhood of Sennheim in Alsace has been 
seriously interfered with by a swarm of myriapods (Schizophyllum salu- 
Josum) crossing the tracks in a wooded district. The crushed bodies 
of the animals rendered the rails so slippery as to impede seriously 
the progress of the trains. The animals were sexually mature males 
and females, and their migration was caused, the author believes, by 
over-population, whereby egg-laying was made unfavorable. 
A. Dendy (Zool. Anzeiger, Bd. XXIII, p. 509) points out that the 
females of three of the Australian species of Peripatus are provided 
with well-developed ovipositors, and that two of these species, and 
possibly the third, lay eggs, a habit unknown in the other species of 
Onychophora. This justifies, in the author's opinion, the erection 
of a separate genus for the reception of these three species, and for 
which the name Oóperipatus is proposed. 
Professor Keibel's Normal Tables for the Development of the 
Vertebrates, of which the first part, published some three years ago, 
dealt with the pig, have been extended in the recently published sec- 
ond part to the chick (Normentafel zur Entwicklungsgeschichte des 
Huhnes, von Prof. Dr. F. Keibel und K. Abraham. 1900). 
The third part of Oppel's Lehrbuch der vergleichenden mikrosco- 
pischen Anatomie der Wirbeltiere has just made its appearance and 
contains an account of the mouth cavity, liver, and pancreas. In 
size and number of illustrations this part is somewhat larger than 
the combined first and second parts, which together deal with the 
cesophagus, stomach, and intestine. 
No. 5 of Vol. IV of the American Journal of Physiology contains 
the following papers : ** On the Physiological Action of the Poisonous 
