234 
Ordo Copepoda. 
Ordo Copepoda. 
Ti-ib. Calanoidea. 
Fam. Calanidse. 
Gen. Euchseta, Philippi, 1843. 
AViegmann’s Archiv f. Naturgeschichte, Jahrg. 0. 
76. Euchseta norvegica, Boeck. 
(PI. XIX). 
Euchceta Prestandrece, Oversigt over de ved Norges Kyster iagttagne 
Copepoder. Clir. Vid. Selsk. Porh. 1874, p. 236. 
Enchmta norvegica, Nye Slsegter og Arter af Saltvandscopepoder. Chr. 
Vid. Selsk. Forh. 1872, p. 40. 
Euchceta carinata, Moebius, Jahresbericht der Commission zur wissen- 
schaftlichen Untersuebung des deutschen Meeres in Kiel f. d. 
Jahr 1872— 73 pg. 271, Tab. VII. 
Artscharaeteristik. Forkroppcn glat, aflang, hos Hun- 
nen dobbelt saa lang som Bagkroppen. Pandehornet til- 
spidset, med kun en utydelig Afsats oventil. Sidsto For - 
kropssegments Sidehjorner stumpe og tiet haarede. lste 
Bagkropssegment hos Hunnen nedentil stserkt knudeformigt 
fremspringende. Halevedhamgene korte, skraat aiskaarne ; 
Bprsterne stasrkt cilierede, don nsestinderste meget kengere 
end de 0vrige; den snpplementsere Haarbprste kortere end 
Legemet. lste Par Eolere af Forkroppens Laengde. Bpr- 
sterne paa Kjsevepalperues sidste Led stserkt forkengede og 
boiede. Munddelene hos den fuldt iidviklede Han rudi- 
mentaere; sidste Fodpar (Gribefodderne) hengere end Bag- 
kroppen, Endekloen paa hoire Fod kortere end det fore- 
gaaende Led med stump Spids, Endevedhamgene paa venstre 
Fod korte og indbyrdes omtrent af ens Lsengde. Farven 
hos Exemplarer fra storre Dyb intensiv blodrod. Lsengden 
indtil ll mw . 
Findesteder. Stat. 26, 31, 33, 35, 40, 53, 54, 96, 
183, 190, 205, 257. 
Bemeerkninger. Dette er den storste og mest ioine- 
faldende af alle de under Expeditionen observerede frit- 
levende Copepoder og staar i denne Henseende neppe til- 
bage for nogen af de tidligere bekjendte Former. Arterne 
af Slmgten Euchceta staar hverandro sserdeles mcr, og Boeck 
blev herved forledet til fflrst at idontificere vor nordiske 
Form med den middelhavske Form E. Prestandrece Phil. 
Senere opstillede han imidlertid Arten E. norvegica , hvis 
Identitet med den her omhandlede Form jeg bar kunnet 
overbevise mig om ved at conferere med Forfatterens ori- 
ginale Manuskript og Tegninger, mig velvilligt laant af 
bans Broder, Dr. H. Boeck. At den her omhandlede af 
Moebius senere under Bensevnelsen E. carinata beskrevne 
Form er specifisk forskjellig fra E. Prestandrece, bar jeg 
kunnet overbevise mig om ved en direkte Sammenligning 
med Exemplarer af sidstmevnte Art samlede af mig ved 
Trib. Calanoidea. 
Fam. Calanidae. 
Gen. Encliaeta, Philippi, 1843. 
AA iegmann’s Archiv f. Naturgeschichte, Jahrg. 9. 
76. Euchceta norvegica, Boeck. 
(PI. XIX). 
Euctuzta Prestandrea, Oversigt over de ved Norges Kyster iagttagne 
Copepoder. Chr. Vid. Selsk. Forh. 1864, p. 236. 
Euchwta norvegica, Nye. Slasgter og Arter af Saltvandscopepoder. Chr. 
Vid. Selsk. Forh. 1872, p. 40. 
Euchmta carinata, Moebius Jahreaberieht der Commission zur wissen- 
schaftlichen Unterauchung des deutschen Meeres in Kiel, f. 4 
Jahr 1872—73, p. 271, Tab. VII. 
Specific Character. — Anterior division of body smooth, 
oblong, in female twice as long as posterior. Rostrum pointed, 
with merely an indistinct ledge above. Lateral corners of 
last thoracic segment obtuse, and densely hirsute. In fe- 
male, first abdominal segment, below, prominently tuberculi- 
form-protrusive. Caudal appendages short, obliquely truncate; 
bristles closely ciliate, — that next to innermost very much 
longer than the others; supplementary hair-bristle shorter 
than body. Bristles on last joint of maxillary palps ex- 
ceedingly elongate and curved. Oral appendages in fully 
developed male rudimentary; last pair of legs (prehensile) 
longer than posterior division of body, terminal claw on 
right logs shorter than preceding joint, with extremity obtuse, 
terminal appendages on left leg short and well-nigh equal 
in length. Colour of specimens from any considerable depth 
a vivid blood-red. Length reaching 11’™. 
Locality. — Stats. 26, 31, 33, 35, 40, 53, 54, 96, 
183, 190, 205, 257. 
Remarks. — This is the largest and most conspicu- 
ous of all the free-living Copepods observed on the Nor- 
wegian Expedition, and in this respect hardly yields pre- 
cedence to any previously known form. The species of the 
genus Euchceta approximate very closely; and hence Boeck 
■was at first erroneously led to confound the Northern with 
the Mediterranean form — E. Prestandrece Phil. Sub- 
sequently, however, lie established the species E. norvegica , 
the identity of which with that here described I have 
had opportunity to ascertain by comparing the original 
manuscript and drawings of the author, kindly lent me by 
his brother, Dr. H. Boeck. That the species here treated 
of, and [described by Moebius as E. carinata, is specifi- 
cally distinct from E. Prestandrece, I have had ample op- 
portunity of proving from direct comparison between the 
said animal and specimens of the latter form, collected by 
