Eleven New Species and a New Genus of Diastylidae (Crustacea: Cumacea) from Australia and One New Species from Canada Author Gerken, Sarah text Records of the Australian Museum 2014 2014-02-26 66 1 1 62 http://dx.doi.org/10.3853/j.2201-4349.66.2014.1601 journal article 10.3853/j.2201-4349.66.2014.1601 2201-4349 4684387 Makrokylindrus Stebbing, 1912 Type species . Makrokylindrus fragilis Stebbing, 1912 . Diagnosis . Telson longer than uropod peduncles, without lateral setation, without distinct post-anal portion. Remarks . This species is included in a short key with the new species of Diastylis . As noted by Day (1980) , the genera Diastylis and Makrokylindrus may be difficult to impossible to differentiate, as the generic diagnoses rely on telson pre and post-anal proportions and setation.