211 
Findesteder. Stat. 200, 223. 
Bemeerkninger. Naervaerende Art skiller sig fra de 
0vr ige bekjendte ved sine usaedvanlig store morkfarvede 0iue, 
stserkt forlaengede Eolere og Formen af 2det Fodpar 
hos Hannen. 
Slsegten Cerapus Say, for hvilken C. tubularis er Tvpen, 
e L soni nylig af Sidn. Smith paavist, vaesentlig forskjellig 
fra SI. Erichthonius Edw. og borer til Corophiidernes Fa- 
milie. Den eneste nordiske Art af denne Slaegt er G. oas- 
smrnis (Siphonoecetes) Sp. Bate, der ogsaa forekommer ved 
v °re Kyster. 
Beskrivelse. Legemet er (se PL XVII, Fig. 4) som 
Slaegtens tfvrige Arter meget smalt, ikke sammentrykt 
fra Siderne, men hellere noget nedtrykt, med sserdeles smaa 
Epi merer. 
Hovedet er omtrent saa langt som de 2 forreste feeg- 
n >enter tilsammen og visor en lignonde Form som hos Ar- 
t(>nie af foregaaende Slsegt. De mellem begge Par Folere 
adskydende Sidelapper er brede og danner fortil en stump 
^ inkel. Den nedre Band af Hovedet er ved Basis af 2det j 
Par FoDre jevnt udrandet og danner bag deres Eaeste en 
fremspringende Vinkel. 
De 4 forreste Par Epimerer er neppe halvt saa hpie 
Sl| m solve Ivroppen og skjsevt afrundede. 5te Par er noget 
storre, med den forreste Lap temmelig dyb; de 2 bagre 
^ ar betydelig miudre. De 3 forreste BagkropSsegmenters 
^ideplader er forholdsvis meget smaa og ender med et 
tydeHgt Hjorne oiler Vinkel. 
Dinene er i Sammenligning med samme bos de pviige 
bekjendte Arter usaedvanlig store, af afrundet oval Foim 
beliggende nrer ind til Hovedets Sidelapper. Deres Pig- 
llu ‘nt er af dyb sortbrun Farve. 
Folerne er stierkt forlsengede, kjendeligt overgaaende 
egeniets halve Laengde, og ligesom bos Arterne af fore- 
f-.aaende Sbegt i den bagre Kant besatte med lange Borste- 
_ 'dpper, iste Par er lidt lsengere end 2det og mangier 
isvobe, hvorimod Svpben er vel udviklet og sammensat af 
circa 12 Led. 2det Par bar Svoben kortere og kun 6- 
leddet. 
lstu Fodpar (Fig. 4 a) er meget lidet og svagtbygget, 
n “‘d 4de Led stserkt udvidet, Haanden kortere end dette 
"A naasten qvadratisk. 
2 dot Fodpar er betydelig kraftigere udviklet og af 
orskjelligt Udseende bos 'begge Kjon. Hos Hunnen (se 
* l S- 4) er 4de Led oiler Haandroden kort og nedentil for- 
i en smalt tungeformig fortilrettet Flig, medens selve 
d anden er stserkt udvidet og af oval Form. Hos Hannen 
^ de tte Fodpar (Fig. 4 l) ganske enormt udviklet, idet 
aa ’idroden her er overordentlig stor og opsvulmet samt 
'"til forlsenget i en skarpt tilspidset dolkformig Fortsats, 
' ' 1 s fr*kker sig nedenunder Haanden, nsesten til dennes 
ode og danner ligesom en Tomniel, hvorimod Endekloen 
Locality, — Stat. 200, 233. 
Remarks. — The present species is distinguished from 
every other known form of the genus by its unusually large 
and dark-coloured eyes, greatly elongated antennae, and the 
form of the 2nd pair of legs in the male. 
The genus Cerapus Say, of which C. tubularis is the 
type, differs essentially, as shown by Sidney Smith, from 
the o-euus Erichthonius Edw., belonging, as it does, to tlie 
family Corophiidce. The only Northern species of this 
genus is C. crasskornis (Siphonoecetes) Sp. Bate, also met 
with on the coasts of Norway. 
Description. — The body (see PL X\ II, ffr. 4) 
is very slender, as in the other species of the genus, not 
compressed from the sides, but rather somewhat depressed, 
with exceedingly small epimcra. 
The head has about the length of the 2 foremost seg- 
ments taken together, and exhibits a form similar to that 
observed in the species of the preceding genus. The lateral 
lobes jutting out between both pairs of antenna?, are broad, 
and form anteriorly an obtuse angle. The lower margin 
of the head at the base of the 2nd pair of _ antenna?, * 
evenly emargir.ate, forming, posterior to the r points o 
attachment, an angular projection. 
The 4 anterior pairs of epimera attain scarcely half 
the height of the body, and are obliquely rounded. " he 
5th pair are somewhat larger, with the foremost obe 
rather deep, - the 2 posterior pairs considerably smaller. 
The lateral plates of the 3 anterior' abdominal segments 
are comparatively very small, and terminate as a distinct 
“S'aa compared with those in the other known 
snecies. are ' remarkably larfe, of a rounded oval form and 
placed in close proximity to the lateral lobes of the head. 
Their pigment is a dark-brown. 
The antennae are greatly produced, appreciably ex- 
reeding half the body in length, and furnished, as m the 
species of the preceding genus, along the posterior margin 
S long fascicles of bristles. The 1st pair is a trifle longer 
than the 2nd, and without any secondary flagellum; how- 
ever the flagellum occurs well developed, and composed o 
close upon 12 articulations. The 2nd pair have the flagel- 
lum shorter, and only six-jointed. 
The 1st pair of legs (fig. 4 a) are very small and 
feeble in structure, with the 4th joint greatly expanded, 
he hand shorter than the latter, and almost quadrate. 
The 2nd pair of legs exhibit a much stronger devel- 
opment and a different appearance in the two sexes ihe 
female (see fig. 4) has the 4th joint or carpus, short, and 
below produced to a narrow, linguiform, forward-directed 
hn J whereas the hand itself is greatly expanded and 
oval in form. In the male, this pair of legs (fig. 4 b) are 
prodigiously developed, the carpus being remarkably large 
and swollen, as also prolonged anteriorly to an acute-pomted, 
mucroniform process, extending down under the band well- 
nigh to its extremity, and forming, as it were,ji thumb, 
