202 



Definitions of Terms Used. 



Anal, Belonging to the anus or vent. 



Anal Plate, The plate just in front of and covering the vent or anus. 



Dorsal, Belonging to the Back. 



Food Material, Substance intentionally taken as food. 



Gonad, Immature reproductive element. In this Bulletin, used to designsite 



the undeveloped young, whether egg or embryo. 

 Gastr'ostege, Plates beneath b'ody in front of tail. 

 I^ateral, Belonging to the side. 

 Ovum, An egg. 

 Ova, Eggs. 

 Oviparous, Pi'oducing eggs or ova, that mature and are hatched outside the 



body of the parent. 

 Ovoviviparous, Bearing living young, which were nourished by a substance 



like a yolk within a membrane. 

 Plate, A large, hard, variously-shaped portion of the epidermis which lies 



against the edge of its neighbor rather than overlapping. 

 Poison, A substance producing a noxious effect upon the system, but not an 



animal secretion. 

 Scale, The smaller pointed portion of the epidermis which overlaps its neigh- 

 bors and is partially covered by another. 

 Stomach Contents, Referring in this Bulletin to any contents of the digestive 



tract. 

 Urostege, A plate beneath the tail. 



Venom, A noxious secretion from poison glands of animals. 

 Ventral, Belonging to the lower or ventral side, or beneath. 

 Viviparous, Bearing living young, which were nourished by direct connection 



with the circulatory system of the parent. 



