FIG. 623. Triton rubicundus. Dissection of the internal organs of a female, viewed from 

 the dorsal side. The roof of the mantle-cavity has been divided by a longitudinal incision 

 and the flaps laid out, that on the left bearing the ctenidium and osphradium, and that 

 on the right the rectum and terminal part of the oviduct. The muscular dorsal wall of 

 the body and the introvert have been divided so as to bring into view the anterior part of 

 the alimentary cunal and a portion of the nervous system. The buccal cavity has been 

 tilted up and opened so as to show the odontophore, and the esophagus has been cut 

 through near the anterior end. A portion of the ventral wall of the crop has been re- 

 moved so as to bring the internal folds into view, and the interior of the nephridium with 

 the contained portion of the intestine has been exposed. Note. The complete course 

 of the intestine through the nephridium is not shown : the stomach is not seen, being 

 hidden by the nephridium, and the ovary is not represented, an.^inus ; ant. aort. anterior 

 aorta ; aur. auricle ; buc. buccal cavity ; cer. buc. con. cerebro-buccal connective ; cer. g. 

 cerebral ganglia ; crop, crop ; cten. ctenidium ; int. intestine : jaw, jaw ; /. buc. g. left buccal 

 ganglion ; /. sal. ff/.ileft salivary gland ; neph. kidney ; neph. ap. renal aperture ; od. odonto- 

 phore ; ces. oesophagus ; <KS'. anterior end of same, cut and turned aside ; osph. osphradium ; 

 ovid. oviduct : ovid', terminal thick-walled portion of oviduct ; pleur. g. pleural ganglion ; 

 post. aort. posterior aorta : post. ces. posterior oasophagus ; rad. s. radula sac ; rect. rectum ; 

 r. sal. gl. right salivary gland ; sal. du. salivary duct ; siph. siphon ; supra, g. supra-ceso- 

 phageal visceral ganglion ; tent, tentacle ; vent, ventricle. 



