1884. ] Entomology. 1149 
greedily eaten by horses, and produces great nervous and muscu- 
lar disorder, in most cases resulting in death.——J. C. Arthur's 
Contributions to the flora of Iowa, vi, in the Proc. Davenport 
Acad, Nat. Sci., Vol. 1v, adds twenty-four phanerogams to the 
previous lists, and now for the first time enumerates the pterido- 
phytes, thirty-four in number. Of the latter twenty-three are 
fern, The Journal of the Linnean Society for August con- 
tains a curious plate representing pollen cells and an anther of a 
poppy (Papaver rheas) from a funeral garland from the coffin of an 
Egyptian princess of the twenty-first dynasty, that is about 1000 
B.C. Both pollen-cells and anthers appear to be slightly larger than 
those of recent plants, but otherwise the resemblance is very 
close——H. N. Patterson, of Oquawka, Ill., has issued a neat 
Check-list of North American Gamopetale made to agree with 
atay’s Synoptical Flora. It will be a convenience in the herba- 
rium.——J, C. Arthur has observed a distinct polarity in the 
leaves of garden lettuce, according to a note in the botanical 
Dr. F. Hauck’s Meeresalgen, being the second vol- 
ume of the new edition of Rabenhorst’s Kryptogamen Flora, has 
reached part v1, which contains the Phæozoösporeæ, Oösporeæ 
and Chlorozoésporez. Luerssen’s Farnpflanzen (Vol. ut of 
Rabenhorst) has reached part 111, devoted to a continuation of 
the Polypodiacez. The illustrations in both the foregoing are 
Most excellent. 
ENTOMOLOGY. 
MODE oF OVIPOSITION OF THE COMMON LONGICORN PINE. BORER 
(Monohammus confusor).—The exact mode of deposition of their 
eggs by the longicorn beetles is not well known, so far as we are 
aware. We have been fortunate enough to observe the female 
beetle while at work making the incision with her jaws, though 
we have not observed the act itself of deposition of the eggs. 
While examining the fir trees on the western shores of Birch 
island, Casco bay, Maine, on a warm sunny afternoon of August 
30th, I saw a male Monohammus confusor standing on the bark a 
a living fir about nine inches in diameter, within the distance © 
less than two inches from a female, whose jaws were buried in 
the bark of the tree on the western side of the trunk which was 
exposed to the full rays of the sun. h 
n beginning to make the incision each of the sree y id 
Strong jaws of this beetle are pushed directly into the bark ; they 
hen apparently brought together, and the result ae E s 
curvilinear gash which descends obliquely in the bar N 
Probable that the beetle’pries up the pad thus formed, mo ae 
shly cut edges are exposed, and an opening is 
which the egg is thrust. While watching the 
male dropped to the ground, and his consort, beg g 
Withdrew her jaws from the incomplete incision, when 
