DEVELOPMENT OF THE BLOOD VESSELS IN THE EROG. 



265 



A F" 1 Afferent vessel of third bran- 

 chial arch : lacunar part 



A F. 4 Afferent vessel of fourth bran- 

 chial arch : cardiac part 



A F"" Afferent vessel of fourth bran- 

 chial arch : lacunar part 



A H Afferent vessel of hyoid arch 



A L Lingual artery 



A M Anterior infundibular commis- 

 sure 



A M' Posterior infundibular com- 

 missure 



A O Ophthalmic artery 



A P Pulmonary artery 



A R Thyroid branch of lingual 

 artery 



A S Posterior palatine artery 



A T Anterior palatine artery 



A U Cutaneous artery 



A Y Pharyngeal artery 



B F Fore-brain 



B H Hind-brain 



B J Infundibulum 



B M Mid-brain 



B P Pineal body 



B. 3 Choroid plexus of third 

 ventricle 



B. 4 Choroid plexus of fourth 

 ventricle 

 C C'celom 



C A Pericardial cavity 



CB.1 First branchial cleft 



CB. 2 Second ditto 



CB. 3 Third ditto 



CB. 4 Fourth ditto 



C G Groove in floor of mouth, lead- 

 ing to first branchial cleft 



C H Byomandibular cleft 



CR Carotid gland 

 E Ear 



EF.1 Efferent Pessel of first bran- 

 chial arch : aortic part 



EF' Efferent vessel of first, bran- 

 chial .'irHi : lacunar part. 



E F. 2 Efferent vessel of second bran- 

 chial arch : aortic part 



E F" Efferent vessel of second bran- 

 chial arch : lacunar part 



E F. 3 Efferent vessel of third bran- 

 chial arch: aortic part 



E F'" Efferent vessel of third bran- 

 chial arch : lacunar part 



E F. 4 Efferent vessel of fourth bran- 

 chial arch : aortic part 



E F"" Efferent vessel of fourth bran- 

 chial arch : lacunar part 



E H Efferent vessel of hyoid arch : 

 aortic part 



E H' Efferent vessel of hyoid arch : 

 lacunar part 



E M Efferent vessel of mandibular 

 arch 



E R Eecessus labyrinthi, within 

 skull 



F. I, 2, 3, 4 Filters of first, second, 

 third, and fourth branchial 

 arches 

 G Glomerulus 



G C Capillary loop of external 

 gill 



G E External gill 



GL. 1,2, 3,4 Internal gills of first,, 

 second, third, and fourth 

 branchial arches 

 H Endothelial lining of heart 



H A Auricle 



H B Mesoblastic wall of heart 



H L Left auricle 



H M Truncus arteriosus: median part 



H N Ditto lateral branch 



H R Eight auricle 



H S Sinus venosus 



H V Ventricle 

 J Jaw 



KA Auditory capsule 



K B Uasihyal cartilage 



K H Cartilage of hyoid arch 



K P Parachordal 



