62 HERPETOLOGY OF MICHIGAN. 



Lateral folds. — Gland like folds extending along the sides of the 

 back. 



^Maxillary. — The bone of the npper jaw, back of the premaxillarv. 

 It forms the greater part of the npper jaw and may bear teeth. 



MaxillarA' teeth. — Teeth borne on the maxillary bone. 



Metamorphosis. — Change from the laryal to the adnlt condition. 



Metarsal tubercles. — Tubercles on the toes. 



Mucous membrane. — Membrane lining the mouth. 



Xares. — ^Nostrils; the external openings are called external nares, 

 the internal openings internal nares. 



Palatine. — A pair of bones just behind the yomers and extending 

 transyersely across .the skull. 



Parasphenoid. — The large broad bone in the roof of the mouth 

 wliich forms the floor of the brain case. 



ParaspJienoid teeth.— Teeth borne on the parasphenoid bone. 



Parotid glands. — Eleyated glandular bodies found back of the 

 eye in toads. 



Pectoral. — Pertaining to the shoulder or breast. 



Plantar tubercles. — Tubercles on the palm. 



Postorbital crests. — Bony crests extending behind the eye. 



Premaxillary. — The two bones, one on either side, in front of the 

 maxillaries. They unite to form the anterior angle of the upper 

 jaw. 



Prenaaxillary teeth. — Teeth borne on the i)remaxillary bone. 



Protectiye coloration. — Coloration of such a character that it 

 seryes to conceal the animal in the natural surroundings. 



Ivudimentary. — Xot well deyeloped. Degenerate. 



Scuted. — Haying scutes or scales. 



Segmentation.— The cleayage of the eggs which takes place after 

 fertilization. 



Sole tubercles. — Small callous like projections on the sole of the 

 foot. 



Spawning. — The act of depositing the eggs. 



Sperm, — The male sex element. 



Spermatophores.— Small mushroom like bodies containing the 

 s])erm, deposited in the water by the male of some species during 

 the breeding season. 



Vermiculated. — Coyered with fine irregular color marks. 



Vertebral. — Pertaining to the yertebrae or spinal column. 



Viridescent. — Greenish. 



Vomer. — A pair of bones in front of the parasphenoid and form- 

 ing the floor of the olfactory capsule. 



Vomero-palatine teeth. — Teeth borne on the yomerine and pala- 

 tine bones. 



