iVo auncJes. 



35 



PLATE XViri. 



THE FEOa 



External Characters — 



Fig. 1. Feoo with Limbs extended — 



Anterior nares or external nares (L. nans, tlie nostrils). 



Eye. 



Tympan'ic membrane or membrana tym'paui (L. tympanum, a drum). 



Cutaneous pouch (L. cutis, the skin). 



Clo'acal aperture (L. cloaca, a sewer). 



r Brachium (L. the arm). 



\ Antebrachium (L. ante, before). 

 FoKE-LiMii -< J^];,^^^^g (l the hand). 



\ Four digits (L. digitus, the finger ur toe). 

 r Femur (L. the thigh). 



^ Pes (L. the foot). 

 (, Five digits. 

 General Disposition of Internal Organs — 



Fig. 2. Dissection from the Ventral Surface to show Viscera, Thoracic and Abdominal — 

 f Ventricle. 



1 

 Lungs, right and left. 

 Stomach and intestine. 



Liver with gall-bladder, pancreas, and spleen. 

 Urinary bladder. 



Corpus adiposum (L. fatty body), finger-like yellow processes. 

 Testis, only one shown. 

 Diag. 1. Transverse Section through Abdomen — 



Neueal Canal containing Spinal cord. 



/Lining membrane or pleuroperitoneal membrane (Clr. 



pleuron, a rib ; peri, around ; tcino, I stretch). 

 Alimentary canal suspended by two layers of the 

 membrane coming together in the middle line — the 

 mesentery (Gr. mesos, middle ; cnteron, intestine). 

 Testes suspended in the same way by the mesorchium 



(Or. orchis, a testicle). 

 Kidneys held in place by the membrane covering their 



ventral faces. 

 Sympathetic nervous s3-stem, two gangliated cords con- 

 tained in triangular space formed by the layers of 

 membrane converging to form mesentery. 

 ^ Dorsal aorta, 

 Diag. 2. Comparison of a Transverse Section of a Vertebrate (Frog) and an Intortebbate 

 (Lobster) — 

 Invertebrate — Vertebrate — 



Visceral tube only. Visceral tuba 



Neural tube. 



Notochord (Gr. noios, the back ; chorde, a string), tlie 

 primitive axial column, separating the two tubes. 

 Limbs on neural or nerve side of body. Limbs on haemal or heart side of body. 



Pleuropeeitone'al Cavity =; 



Thoracic Cavity lined by the pleura, 

 and Abdominal Cavity lined by the 

 peritoneum in Man, 



