302 NEW YORK STATE MUSEUM 



Fig. 



4 An enlargement of the ganglion of ttie ocular tentacles, 



optic nerve and eye, x 12. 



5 An enlargement of the nerve and ganglion of the olfactory 



tentacle, x 12. 



6 r y p t i fi u s m i n u t i s s i m n s, 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; ^ stomach; 5 intestine; 

 6 rectum; 8 anus; 9 superior lobe of digestive gland; 10 inferior 

 lobe of digestive gland; 11 ducts of digestive gland; 12 salivary 

 ducts; IS salivary glands; IJ^ 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; 28 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; 55 pulmonary rete; S6 

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

 mouth and inferior tentacle; S9 superior tentacles; 1^0 integu- 

 ment; 1^1 muscles from buccal body of integument; 1^2 superior 

 tentacular muscle; JiS inferior tentacular muscle; J^Jf retractor 

 muscles; 1^5 muscular peritoneum; Jf6 muscular collar; Jp cephalic 

 artery; Jf8 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. 



