REPORT ON THE MARSENIAD.E. 15 



subanticum. Penis compressus, qnasi convolutus, quasi alatus, apice cyliadrico obtuso. 

 Margo lateralis podarii incrassatus. — Lamellae mandibulars ut in Marseninis, sed promi- 

 nentia dentiformi marginis anterioris iustructse. Armatura lingualis ut in Marseninis 

 (2-1-1-1-2). 



Testa interna cornina, scutiformis, non spirata. 



1. Onchidiopsis grcenlandica, 1 Bgh. 2. Onchidiopsis glacialis (M. Sars). 



Mare arcticum (atlant., pacific). Mare arcticum (atlant.). 



1 The species indicated by larger italic type have been anatomically examined by the author. 



