The Bairdiinae of the littoral and inner shelf of the Solomon Islands are both abundant and diverse. A total of 21 species have been recovered of which 13 are described as new 2 further species are left in open nomenclature. The new genus <i>Mydionobairdia</i> is erected, based on <i>Triebelina schyroconcha</i> Maddocks, 1969. The new species are: <i>Bairdoppilata paraalcyonicola, B. paracratericola, Neonesidea paragierloffi, N. vscripta, N.? crepidula, N.? rara, Paranesidea bipustulosa, P. corbita, P. equipunctata, P. petalona, P. stricta, P.? confusa</i> and <i>P.? paucipunctata.</i> Some of the difficulties involved in distinguishing species of <i>Neonesidea</i> and <i>Paranesidea</i> are discussed.