726 
PROFESSOR T. J. PARKER ON THE 
18. OudemanSj A. C. “ The Circulatory and Nephridial Apparatus of the Nemertea.” 
‘Quart. Journ. Microsc. Sci.’, vol. 25, 1885 (Suppl.), p. 1. 
19. Owen, R. ‘ On the Anatomy of Vertebrates.’ Vol. 1. London, 1866. 
20. Parker, T. J. “On the Intestinal Spiral Valve in the genus Raia .” (1879.) 
‘ Zool. Soc. Trans.’, vol. 11, p. 49. 
21. Parker, T. J. “On the Venous System of the Skate.” ‘New Zealand Instit. 
Trans.,’ vol. 13, 1881, p. 413. 
22. Parker, T. J. “ Notes on the Anatomy and Embryology of Scymnus lichia .” 
(1882.) ‘New Zealand Instit. Trans.,’ vol. 15, 1883, p. 222. 
23. Parker, T. J. ‘ A Course of Instruction in Zootomy (Vertebrata).’ London, 1884. 
24. Rolleston, G. ‘ Forms of Animal Life.’ Oxford, 1870. 
25. Stannius, H. ‘ Handbuch der Anatomie der Wirbelthiere.’ Berlin, 1846. 
26. Wiedersheim, R. ‘ Lehrbuch der vergleichenden Anatomie der Wirbelthiere.’ 
Jena, 1883. 
Description of Plates. 
The Heart, Ventral Aorta, and Afferent Branchial Arteries are coloured purple, the 
remaining arteries red, and the veins blue; cartilaginous structures are dotted. 
Reference Letters. 
The following list refers only to the vascular system ; other structures are referred 
to in the description of the figures in which they occur:— 
The letter R or L prefixed to an abbreviation indicates right or left. 
When there is a series of vessels to which the same name is applied (e.g., the 
afferent and efferent branchial arteries), the individual trunks are numbered from 
before backwards. 
The aperture of an artery or vein into a vessel of higher order is indicated by the 
abbreviation for the vessel in question with the addition of a dash — e.g., Jug. v. in 
fig. 2 points to the aperture of the jugular vein into the precaval sinus. 
A ur. Auricle. 
C. art. Conus arteriosus. 
Vent. 
Heart. 
Sin. ven. Sinus venosus. 
Sin. a ur. ap. Sinu-auricular aperture. 
V entricle. 
