 
 
 
 
a. The ablative in -í is found exclusively -
1. In nouns having the accusative in -im (§ 75); also secúris.
2. In the following adjectives used as nouns: aequális, annális, aquális, cónsuláris, gentílis, moláris, prímipíláris, tribúlis.
3. In neuters in -e, -al, -ar: except baccar, iubar, réte, and sometimes mare.
b. The ablative in -í is found sometimes -
1.  In avis, clávis, febris,
fínis, ígnis,[1][Always in the formula aquá et
ígní interdící (§ 401).] imber,
lúx, návis, ovis, pelvis, puppis, sémentis,
strigilis, turris, and occasionally in other words.  
 2.  In the following adjectives used as nouns:  affinis, bipennis,
canális, familáris, nátális,
rívális, sapiéns, tridéns, trirémis,
vócális.  
 
 NOTE 1:  The ablative of  NOTE 2:  Most names of towns in -e (as, Praeneste, Tergeste)
and Sóracte, a mountain, have the ablative in -e.  Caere has
Caeréte. 
 NOTE 3:  Canis and iuvenis have cane, iuvene. 
 
 
 
 
 
