486 Annales des Sciences Naturellcs. 



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 mucli more efficient for reference, as bold 

 wood-cuts, perhaps, not more expensive. The skull in the plate of Macropus 

 Parryi is quite an outrage. 



Transactions and Periodicals — Foreign. 



Annales des Sciences Naturelles. Zoologie, MM. Audouin et 

 Milne-Edwards. Botanique, MM. Ad. Brongniart et Guil- 

 lem in. 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." Ravius Observations anatomiques 



sur les Fanons, sur leur mode d'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 I'anatomie 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 



V 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 ; 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 I'Hyma- 



