Benhamia mexicana Rosa, 1891 (original description)
Cryptodrilus insularis Rosa, 1891 accepted as Pontodrilus insularis (Rosa, 1891) accepted as Pontodrilus litoralis (Grube, 1855) (original description)
Megascolecidae Rosa, 1891 (original description)
Megascolecinae Rosa, 1891 accepted as Megascolecidae Rosa, 1891 (original description)
Microchaeta benhami Rosa, 1891 accepted as Geogenia benhami (Rosa, 1891) (original description)
Perichaeta grubei Rosa, 1891 (original description)
Perichaeta hawayana Rosa, 1891 accepted as Amynthas gracilis (Kinberg, 1866) (original description)
Perichaeta ijimae Rosa, 1891 (original description)
Perichaeta novarae Rosa, 1891 accepted as Amyntas montanus (Kinberg, 1866) accepted as Amynthas montanus (Kinberg, 1866) (original description)
Perichaeta operculata Rosa, 1891 accepted as Megascolex capensis Horst, 1883 accepted as Pheretima quadragenaria (Perrier, 1872) (original description)
Perichaeta pentacystis Rosa, 1891 (original description)
Perichaeta philippina Rosa, 1891 (original description)
Perichaeta racemosa Rosa, 1891 (original description)

 Spelling

 for Megascolecidae Rosa, 1891

Rosa (1891: 380) is apparently the first use of Megascolecidae, but Rosa's spelling is consistently as "Megascolicidae" [details]