242 Oie.iug-. 



Species iiiqiiircnda. 



2. Microstomnin littorale OERSTED. 



Corpus obloiiifum lineare, capite et extremitate postica aequali- 

 ter obtusis, fustnim. Os apertura longitudinali. OcelU in niargine 

 laterali, ah apice corporis quinta ejus parte remoti. Longit. 2'". 

 3Iultij)licatio per partitionem spontaneani transversalem. 



Microstoma littorale Oersted: in Kroyer's Naturhist. Tidsskr. 1844 — 

 1845. 417. 

 Hahitaculum. Prope Dröbak band procul a littore (Oersted). 



Genus situ oris ip^noto adhuc dubium nuni Acrostomatibus v. Hypostomatibus 



adnumeranduin: 



XXVIII. APHANOSTOMUM OERSTED. 



Corpus oblongurn. Os . . . OceUus (otolithus?) unicus byalinus 

 in medio corpore anteriore. Sexus . . . Anus . . . Maricolae. 



1. Aphanostomum griseam OERSTED. 



Corpus oblongurn, antice obtusum, posteriora versus sensim an- 

 gustius, griseseens vel flaveseens. Longit. 1'". 



Aphanostoma griseum Oersted: in Kroyer's Naturhist. Tidsskr. I. 



1844—1845. 417. 

 Ilabitacnlum. Ad littus prope Dröbak (Oersted). 



2. AphanostoniDiii virescens OERSTED. 



Corpus oblongiun utrinque fernje aequaliter obtusum, virescens, 

 maculis duabus brunneis in margine anteriore laterali. Longit. .. . 

 Aphanostoma virescens Oersted 1. c. 417. 

 H ab i tiicii hl in. Ibidem (Oersted). 



3. Aphanostomum diversicolor OERSTED. 



Corpus oblongurn, antice obtusum, flaveseens, medio latius, 

 cyaneurn, poslice subacuminatunt, fuscun». Longit. V" . 

 Aphanostoma diversicolor Oersted 1. c. 417. 

 H a b i t a c u I u m. Ibidem (0 e r s t e d). 



4. Aphanostomum latum OERSTED. 



Corpus oblongum utrinque aequaliter dilatatum, rotundatum, 

 medio angustius, griseseens. Longit. 1' '. 

 Aphanostoma latum Oersted 1. c. 417. 

 Ilabitacnlum. Ibidem (Oersted), 



