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MANUAL OF ZOOLOGY sficT. 



of the crop in sucking Insects is taken by a stalked 

 sac, usually termed the sucking stomach. The essential 

 processes of digestion are carried on in an elongated chamber 

 with glandular walls, the chyle stomach, which may be 

 divided into several parts. Sometimes a muscular chamber 

 the gizzard (giz.) frequently containing chitinous teeth, 



FIG. 135. Mosquito (Culex) and larva. (After Guerin and Percheron.) 



is intercalated between the crop and chyle stomach. 

 Appended to the latter at its anterior end in many Insects 

 are a number of tubular blind pouches, the hepatic cceca 

 (ccec.). At the junction of the chyle stomach with the small 

 intestine, or further back, there open a number (from 2 to 

 over 100) of narrow tubular appendages, the Malpighian 

 tubes (malp.} the organs of renal excretion. The intestine 



