Miscellaneous . 43 7 



rest of the skeleton is only cartilaginous. There are also (No. 36) 

 " the teeth of the foetal Mysticete preserved in alcohol ;" and Dr. 

 Knox observes, " they never cut the gums, but become gradually 

 reabsorbed," which agrees with Professor Eschiicht's account of the 

 teeth of Megapteron ; and further, Dr. Knox remarks, " The integu- 

 mentary system furnish the baleen, which is evidently a modified 

 form of hair and cuticle." (p. 22.) 



5. I may here add, as determining the synonyma, that the Phoca 

 Leopardina of Professor Jameson in Weddel's ' Voyage,' from the spe- 

 cimen preserved in the museum of the Edinburgh University, is the 

 same animal as I described under the name of Leptonyx Weddelii, 

 figured in the ' Zool. Ereb. and Terror.' 



A foetus extracted from a specimen of the Pilot Whale (Globioce- 

 phalus Svieval) was six feet long. 



In Lagenorhynchus leucopleurus the first, second and third cervical 

 vertebrae are united by their spinous process, the rest free. 



In Globiocephalus Svieval the second and third cervical vertebrae 

 are united, the rest free. 



In Monodon monoceros the second and third cervical vertebrae are 

 united by the spinous process, not by the body, and the rest are free. 



In Delphinus Tursio the atlas and the second cervical vertebra are 

 united by the body, the spinous and lateral processes, and the rest 

 are free and thin. 



There is a perfect specimen of Hyperoodon latifrons, brought from 

 Greenland by Capt. Wareham, in the museum at Newcastle, rather 

 smaller (seven feet long) than the one from Orkney in the British 

 Museum. There is the skeleton of an adult Hyperoodon from the 

 Firth of Forth in the anatomical museum of Edinburgh University 

 with the skull sixty inches long ; the crests are very thick, but quite 

 separate, and with flat perpendicular walls on the inner side. 



There is another skull of the same species, from a specimen 

 stranded on the coast of Lancashire, in a garden near Newly Bridge. 



MISCELLANEOUS. 



THE ROSE CADDICE SAW-FLY. 



A work devoted to the investigation of the manners and ceconomy 

 of the species of insects which feed upon the Rose-tree would extend 

 to several volumes ; there is, in fact, scarcely any one kind of vege- 

 table, the Oak, perhaps, excepted, which supports so many distinct 

 kinds of insects, the natural history of many of which is still unre- 

 corded : and we know no more interesting subject of garden-leisure 

 than the examination and publication of the details of their habits, 

 as many of them furnish remarkable details which could not fail to 

 be highly instructive. 



The insect which is the subject of the present communication is 

 one of these Rose-feeding insects whose singular ceconomy renders it 

 very worthy of attention. For many years we have regularly noticed 

 in our garden at Hammersmith, during the last week of May and 



