Synæresis is the contraction of two syllables into one, as in alvearia, pronounced alvaria.
Strāvĭt hŭmī dēmēns cōnfērta ālveārĭă Jūnō:
Mad Juno threw the crowded beehives on the ground.
Hydrophobia occurring in a queen bee from the bite of a dog would be an interesting case to the faculty.
Diæresis is the separation of one syllable into two, as evoluisse for evolvisse. Thus Ovid says, alluding probably to the padding system adopted by dandies and theatrical artists,
Dēbŭĕrant fūsōs ēvŏlŭīssĕ sŭōs:
They ought to have unwound their spindles.
Cæsura is when after a perfect foot (though not one like Taglioni’s), a short syllable is made long at the end of a word, as
Pēctŏrĭbūs ĭnhĭāns—mōllēs, ēn, dēsĕrĭt ālās:
Intent upon the breasts (of the fowls) lo! he deserts the tender wings.