342 



HANDBOOK OF INVERTEBRATE ZOOLOGY. 



Their posterior ends are flattened, and lie near the sur- 

 face of the body. Notice that the cavity of the renal organ 



entirely surrounds the 

 glandular portion of the 

 blood-vessel. 



FIG. 178. Superficial dis- 

 section of the ivnal and cir- 

 culatory on, r ;iHM>l' male speci- 

 men of Loligo Pealil. ( I )rawn 

 from nature by W.K. Brooks. ) 

 The capsules of the renal 

 organs are opened, and the 

 blood-vessels an- freed from 

 the adjacent organs. 



a. Rectum, cut across. 

 It. Gills, o. Branchial veins. 

 (7. Ink bag. e. Penis. /. Open- 

 ings of renal organs. <j. < 'av- 

 ity of renal organ. A. Intes- 

 tine. L Glandular portion of 

 anterior vena cava. /,-. Sy 

 teniic, heart. /. Branchial ar- 

 tery. w. Gill muscle. n. Nu- 

 trient artery of gill. o. Bran- 

 chial heart. j>. Glandular 

 portion of posterior vena 

 cava. </. Enlarged portion 

 of posterior vena ca\ a. r. Lat- 

 eral mantle artery. ..-. Stom- 

 ach. t. (Esophageal end of 

 stomach. . Reproductive 

 organs. s'. Blind sac of 

 stomach. ('. Capsule of ab- 

 dominal viscera, or perito- 

 neum. .r. Artery to stomach 

 and mantle. 



FIG. ITS. 



b. The anterior vena cava runs backwards as far as the 

 branchial heart, where it unites with a much shorter 

 glandular structure, the glandular portion of the posterior 



