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XVII. On the Blood-Vessels of Mustelus Antarcticus: a Contribution to the 
Morphology of the Vascular System in the Vertebrata. 
By T. Jeffery Parker, B.Sc. Bond., C.M.Z.S., Professor of Biology in the University 
of Otago. 
Communicated by Professor M. Foster, M.D., Sec. P S. 
Received June 4,—Read June 10, 1886. 
[Plates 34—37.] 
Contents. 
Introductory . .. 
I. The Abtekies. 
1. The ventral aorta and afferent bi’anchial arteries. 
2. The efferent branchial arteries, epibranchial arteries, and dorsal aorta.. 
3. The peripheral arteries.,. 
A. Arising from the efferent branchial arteries... 
B. Arising from the dorsal aorta. 
II. The Veins.... ; . .... 
A. System of the sub-intestinal vein. 
i. Renal portal section... 
ii. Hepatic portal section . 
B. System of the cardinal veins . 
c. „ ,, lateral ,, . 
D- „ ,, coronary „ . 
E. „ „ cutaneous „ . 
General considerations ..... 
Methods of investigation ... 
Bibliography ... 
Description of plates. 
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The present inquiry was undertaken with a view of settling, if possible, one or two 
doubtful points in our knowledge of the vascular system of Fishes, and of giving, in 
an accessible form, a fairly complete account of the blood-vessels of a typical Selachian, 
since, as far as I am aware, this has not yet been done. The arteries and veins of the 
Skate are figured, for the most part very accurately, by Monro (16)* ; the arteries of 
* The figures between brackets refer to the bibliographical list at the end of the paper (p. 725). 
