Among a number of interlacustrine Bantu languages the nominal prefix is commonly of a shape V1CV2 (vowel, consonant, vowel). It is convenient to refer to V1 as the ‘initial vowel’ of the prefix, even where—as in Class 9—the prefix comprises only a single vowel or a vowel followed by a nasal. In certain contexts the prefix has been noted to occur without this initial vowel, and while no full study of such contexts has yet been made, the recently published Luganda Grammar establishes a number of practical rules for the omission of the ‘Initial Vowel’. Here, there is a reference to the ‘…loss of the I(nitial) V(owel)…to distinguish certain nouns when indicating close personal relationships…’, but there is no further reference to the important series of contexts provided by kinship terminology.