ophidia

CIDE DICTIONARY

ophidia, prop. n. pl. [NL., fr. Gr. , dim. of 'o`fis a snake.].

 The suborder of reptiles which includes the serpents; called also Serpentes.  [1913 Webster]
" The most important divisions are: the Solenoglypha, having erectile perforated fangs, as the rattlesnake; the Proteroglypha, or elapine serpents, having permanently erect fang, as the cobra; the Asinea, or colubrine serpents, which are destitute of fangs; and the Opoterodonta, or Epanodonta, blindworms, in which the mouth is not dilatable."  [1913 Webster]