117 



analogue of the carotids, whilst the consideration of its origin, course 

 and termination induces me to believe that its homological relation 

 is •with the inferior pharyngeal. 



The absence of any such arrangement iu the whole subkingdom of 

 the Vertebrata is to be remarked ; and in conjunction -vvith the fact that 

 the figure of the Saurian circulation given in Miiller's ' Physiology ' 

 (by Baly, vol. i. p. 1 74) is stated to be from an individual of the šame 

 species, viz. Crocodilus lucius, induces me to suppose the anomaly 

 above recorded to have been an individual peculiarity. 



2. Additional Observations on the Cetacea of the Bkitish 

 IsLANDs. By j. e. Gray, Esq., F.R.S. etc. 



1 . Since my former paper was read, I have been enabled, by the 

 kindness of Professor Goodsir, to examine the specimens of Cetacea 

 which were prepared by Dr. Knox, and which now form part of the 

 anatomical collection of the Edinburgh University. 



The large malė vchale which came ashore on the 5th of October 

 1831, andvi^as seventy-eight feet long, ^hich Dr. Knox in his Cata- 

 logue calls Balana maximus borealis, and of which he made many 

 most interesting preparations of the soft parts, is one of the most 

 beautiful and perfect skeletons I have yet seen. The latter is for the 

 present exhibited in the elephant- house at the Zoological Gardens 

 of Edinburgh, but unfortunately it is suspended so high that I could 

 not take any measurements. It is a Physalus, very nearly allied to 

 what I have called Physalus antiguorum ; but it diiFers from the spe- 

 cimen taken at Plymouth in the lateral processes of the cervical 

 vertebrse being higher compared with their length, and more trun- 

 cated at the end ; in the third and fourth cervical vertebrse not being 

 so much expanded beyond the aperture ; in the fifth being still 

 thinuer ; and in the sixth, instead of a complete ring, having only an 

 elongated, arched, upper lateral process, and a very short, rather de- 

 pressed lower one ; and the seventh only an upper one. Should 

 this species prove distinct, it might be distinguished as Physalus 

 borealis. 



Dr. Spittal, v/ho saw it when first cast ashore, informs me it wa3 

 slate or grey, and the tail vs^hite (probably beneath). The baleen 

 appeared at the distance black. 



2. In the anatomical museum there is the skeleton and soft part 

 of a Dolphin or Bottle-nose, which was sent to Dr. Knox from 

 Orkney in May 1825. It was a female and weighed fourteen stone. 

 It is described in Dr. Knox's ' Catalogue of the Anatomical Prepa- 

 rations of Whales,' Edinburgh 1838, as No. 84, Delphinus Tursio. 



It is a nearly adult specimen of Delphinus leucopleurus, lately de- 

 scribed by Rasch, Mag. Zool. 1843, p. 369, from a specimen taken 

 at Christiania in Norway, figured by me from a Norvvegian specimen 

 in the ' Zoology of H. M. S. Erebus and Terror,' under the name of 

 Lagenorhynchus leucopleurus. 



Dr. Knox gives the follovdng measurements: entire length 9 ft. 

 6 in. ; circumference 3 ft. 2 in. Pectoral 10 inches long ; tail 1 ft. 2 in. 

 wide ; and the gape 9 inches. 



