486 Annales des Sciences Naturelles. 
nicus. One thing we would remark of the very beautiful figures of animals 
which have from time to time appeared in these Transactions, the effect of the 
picture is destroyed by the introduction of the skulls and details of anatomy be- 
side the figure ; they would be much more efficient for reference, as bold 
wood-cuts, perhaps, not more expensive. The skull in the plate of Macropus 
Parry i is quite an outrage. 
TRANSACTIONS AND PERIODICALS Foreign. 
Annales des Sciences Natnrelles. Zoologie, MM. AUDOUIN et 
MILNE-EDWARDS. Botanique, MM. AD. BRONGNIART et GUIL- 
LEMIN. Crochard and Co. Paris, Mai, Juin, 1836. (Continued 
from page 413.) 
1. Zoology. 
THE few first pages in the Number for May are occupied with the conclusion 
of LESSON'S memoir " sur les Bero'ides." RAVTUS Observations anatomiques 
sur les Fanons, sur leur mode ^insertion entre aux et avec la membrane palatine. 
These observations were made on a specimen of the Balcena rostrata, forty-two 
feet in length and twenty feet in circumference, which was cast dead upon the 
shore of Cayeux, near Saint Valery. A figure of the species is given, as also 
several illustrations of the anatomical details of the jaws and their remarkable 
appendages VANBENEDEN'S Memoiresur V anatomic de I Helix algira. The 
differences between it and H. pomatia are summed up in the following particu- 
lars : 1. There are two ganglions representing the brain in H. algira, and four 
ganglions underneath ; there is only a nervous ring without distinct ganglions, 
excepting perhaps a superior and inferior, in H. pomatia. 2. The real number 
of filaments issuing from the nervous ring is much more considerable, and the 
filaments more slender in H. algira than they are in H. pomatia. 3. The sali- 
vary glands surround the oesophagus in H. algira, and the stomach in H. pomatia. 
4. The upper jaw or tooth is crenulate in H. pomatia, while in H. algira there 
is a single medial prominence. 5. The appendix of the penis, as well as the 
duct of the urinary bladder (so we translate " la vessie du pourpre,") is much 
longer in H. pomatia. 6. There is no " love dart " in the algira, and the bag 
which should contain it becomes a passage to the female organs. 7. The mul- 
tifid vesicles are represented by a glandular body, without any appendix in the 
H. algira. 8. The urinary bladder is free and floating at the end of its canal in 
H. pomatia, and adheres to the oviduct in the H. algira DESHAYES sur 
I* estimation de la temperature des periodes tertiaires en Europe, fondee sur le con- 
sideration des coquilles fossiles. An ingenious application of conchology to the 
determination of some interesting points in geology. Deshayes, as is well 
known, arranges the tertiary formations in three groups, deposited in successive 
periods ; and his investigations in the present paper lead to the conclusion that 
in the first of these periods the Eocene of Lyell the temperature of the globe 
was equatorial, and probably several degrees warmer than that of the present 
equator j that during the second, or Miocene period, of which the deposits occupy 
the centre of Europe, the temperature was like that of Senegal and Guinea, 
while the temperature of the third or Pliocene period, at first a little more ele- 
vated than ours in the Mediterranean basin, became latterly as low as that which 
now exists HODGSON sur les Chevres et les Moutons sauvages de VHyma- 
