GENERAL ANATOMY OF A CRAB. 



199 



ostia into the heart, to be forced out again through the 

 arteries at each contraction. 



u. The Digestive Organs. 



These are the mouth appendages, the oesophagus, the 

 stomach, thepyloric coeca, the liver, the intestine, and the 

 intestinal coecum. 



ov 





Fro. 103. 



Pio. 103. Female specimen of Callinectes hastatus ; opened from below 

 to show the reproductive organs. (Drawn from nature, by J. E. Arm- 

 strong. ) 



A. Antennules. An. Antennae. E. Eyes, a 6. Abdomt i. b. Pyloric 

 pouch of stomach, c. Cardiac pouch of stomach. ./. Intesth . TO. Man- 

 dible. 6. Crossbar of ovary, o P. Ovary. 7). Seminal recepk ^le. q. In- 

 testinal coecum. p I. Abdominal appendages, r. Oviduct. 



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