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REPORT ON ZOOLOGY, MDCCCXLII : 
altitudinem pinnaB inferioris subvincente, lamella inferiore horizontali 
breviore pinna apicem versus angustiore, setis capillaribus confertis 
pinnis ter longioribus. 
Oersted considers the Lumhricus capitatus of Fabricius to be a 
Glycera ; and he adds to this genus a Glyc. setosa, — segmentis pinnas 
gerentibus ex duobus minoribus compositis, pinnis et cirris et ligula 
banchiali destitutis quadrilobis elongatis (duplo longioribus quam altis) 
tribus lobis conicis obtusis, quarto multo breviore rotundato, mamilla 
parva in quoque latere segmentorum a pinnis valde remota, setis pro- 
ductis. 
Of Aricice, Fabricius has only mentioned Cirratulus borealis, Lam. 
{Lumhricus cirratus, F.) To this Oersted adds Ophelia hicornis, Sav., 
Scoloplos armiger, Blainv., and the following new worms : — Scoloplos 
minor, Oerst. ; capite globoso, in segmentis anterioribus utraque pinna 
papillis instructa, in posterioribus pinna superiore minutissimo rotun- 
dato, pinna inferiore multo majore accuminata, appendicibus caudalibus 
4 filiformibus. — Ophelia mamillata, Oerst. ; segmentis 25-28 singulo 
ex annulis 3 vix conspicuis composite, ligulis branchialibus in segmento 
6to-14mo margine interiore duobus prominentiis praeditis, singulis seg- 
mentis posterioribus duobus paribus mamillarum lateralium instructis, 
papillis analibus 11 minutissimis omnibus ejusdem longitudinis et secundo 
quoque ejusdem latitudinis. — Arenicola piscatorum has also been men- 
tioned by Oersted as a Greenland Annelide. 
In a second treatise (Kroyer Tidsskr. ant. cit. p. 128, Conspectus 
generum specierumque Naidum ad Faunam Danicam pertinentium) 
Oersted reviews the Danish Naides, which he places in three divisions, 
according to the number of their bundles of bristles: — 1. Segmenta 
omnia setis superioribus instructa. In this he places his new genus, 
Lumbriconais, containing one species only, viz., — L. marina, Oerst., 
which forms a connecting link between the small Lumbricince and the 
Naides. — 2. Segmenta quatuor anteriora (interdum sola duo) setis 
superioribus destituta. In this Oersted arranges Proto digitata. Ok. ; 
Stylaria paludosa, Lam. {Nais. proboscidea. Mull.) ; and the new 
genus, Serpentina, Oerst., with the under lip drawn forwards, contain- 
ing the single species S. quadristriata, Oerst. {Nais serpentina, Miill.) 
The genus Nais approximates this, without any projections. To it 
belong the N. elinguis, Miill., and N. barbata, MiilL, and two new 
ones, viz. : — N. uncinata, Oerst. ; corpore ex 20-25 segmentis con- 
stante pellucido, setis sub-quaternis et superioribus et inferioribus 
uncinatis ejusdem formse in omnibus segmentis : and N. littoralis, 
Oerst, ; corpore ex 20 segmentis constante pellucido, segmentis mediis 
duplo longioribus quam latis, posticis brevissimis, setis omnibus uncina- 
tis in antico pare pinnarum 7-8 valde porrectis, in ceteris 3-4 pro- 
minulis. — 3. The third division of the Naides possesses C hcetog aster ; 
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