302 NEW YORK STATE MUSEUM 



Fig. 



4 An enlargement of the ganglion of the ocular tentacles, 



optic nerve and eye, x 12. 



5 An enlargement of the nerve and ganglion of the olfactory 

 > tentacle^ x 12. 



G Cryptoicus minutissimus, highly magnified. 

 PLATE 14 



P 1 y g y r a a 1 b o 1 a b r i s dissected and the organs separ- 

 ated: 1 buccal body; 2 esophagus; S crop; Jf stomach; 5 intestine; 

 6 rectum; 8 anus; 9 superior lobe of digestive gland; iO inferior 

 lobe of digestive gland; 11 ducts of digestive gland; i2 salivary 

 ducts; IS salivary glands; i^ penis; 15 vagina; 16 receptaculum 

 seminis; 11 retractor muscle; 18 glandular portion of the vas 

 deferens; 19 vas deferens; 20 spermatic duct; 21 uterine canal; 

 22 spermatic duct; 23 albumen gland; 2^ hermaphroditic duct; 

 25 accessory gland of duct, or talon; 26 ovotestes; 21 renal organ 

 or kidney, the primary ureter along its upper side; 28 secondary 

 ureter; 29 opening of ureter, or renal duct; SO ventricle; SI 

 auricle; S2 pericardiac cavity; SS pulmonary vein; SIf large blood 

 vessel connecting with pulmonary rete; S5 pulmonary rete; S6 

 supra-esophageal ganglia; SI tentacular nerve; S8 nerves to 

 mouth and inferior tentacle; S9 superior tentacles; JfO integu- 

 ment; Jfl muscles from buccal body of Integument; Jf2 superior 

 tentacular muscle; JfS inferior tentacular muscle; 44 retractor 

 muscles; Jf5 muscular peritoneum; 4^ muscular collar; Jfl cephalic 

 artery; J^S nerve to muscular collar. 



PLATE 15 



Limax maximus 



The same letters apply to the same organ in each figure. 

 Fig. 



1 The dorsal part of the integument is cut and turned back, 



showing the various organs in position. 



2 The pulmonary chamber, heart, etc. are turned back, show- 



ing the under side of the organs, and the parts concealed 

 by them in figure 1. 



