235 
Messina. Foruden ved den langt betydeliger# Storrelse 
skiller nservaerende Art sig blandt audet ved Pandehornets 
-form . ved det nedentil sserdeles staerkt pukkelformigt frem- 
springende Iste Bagkropssegment lios Hunuen saint ved 
Mygningen af Hannens bag re Fodpar (Gribefpdderne). Det 
kjelformigo F re inspring, som Andes nedentil mellem sidste 
Par Kjaevef0dder og lste Fodpar og som bar givet Anled- 
Mng til den af Moebius foreslaaede Artsbemevnclse, er 
n °get, der ikke er eiendommeligt for nuvserende Art, men 
s °'n den deler med de fleste Calanider. 
myself at Messina. Let alone its far greater size, the 
present species is distinguished among other characteristics 
by the form of the rostrum, by the 1st abdominal segment 
in the female jutting forth below with an exceedingly prom- 
inent hunch, and by the structure of the posterior pair of 
legs in the male (prehensile). The keel-shaped projection 
occurring below between the last pair- of maxillipeds and 
the 1st pair of legs, and that gave rise to the specific 
designation proposed by Moebius, is nowise peculiar to the 
present species, sharing as it does the said character with 
most other Calanidie. 
Beskrivelse af Hunnen. Legemet viser (se PI. XIX, 
Pig- 1 og 2) som hos alle Calanoider en meget skarp Ad- 
skillelse mellem For- og Bagkrop. Forkroppen er af aflang 
e Uer noget tendannet Form, omtrent 3 Gauge saa lang som 
bled og afsmalnes stmrkt mod den forreste Elide, niindre 
mod- den bagerste. Den bestaar kun af 4 tydeligt be- 
grsendsede Segmenter; idet de 2 sidste er sammenvoxede 
med hinanden. Det forreste Segment, der er lamgere 
L1 'd de nvrige tilsa.m men og i sig indbefatter det lste lod- 
kmrende Segment, ender fortil med et nsesten lige fortil- 
rottet, skarpt tilspidset Fremspring eller Pandehorn. Paa 
den 0 V re Side af dette sees (Fig. 3) en ubetydelig, neppe 
r, '<erkelig Afsats. hvortil er fsestet 2 koi'te Borster. Hos 
11 middelhavske Form er derimod denne Afsats ud- 
hukket til en stairk tornformig Fortsats af et lignende 
dseende som det egentlige Rostrum. Sidste Forkrops- 
Se gment er som ssedvanlig i Midten dybt udrandet og gaar 
|d hvev Side ud i en stumpt tilrundet med taette Haar 
“■sat liagudrettet Lap. Bagkroppen er neppe halvt saa 
' ill S som Forkroppen og overalt tint laadden at korto 
aar eller Smaapigge, der ganske synes at mangle paa 
_ °rkropp en . Ben bestaar af 4 Segmenter foruden de 2 
Halevedhaeng (Furca). Af disse er det lste betydelig stprre 
(1| d liogen af de nvrige og danner nedentil loran Midten 
D stssrkt pukkelformigt Fremspring, paa hvilket Kjensaab- 
llln gen er beliggende og hvortil den enkle HUggessek og 
~ Hler flere Spsrmatophorer er fsestede. De 2 fplgende 
r giuenter er simpelt cylindriske og indbvrdes omtrent af 
I’m Lsengde, hvorimod det 4de er sserdeles kort og derfor 
let at o verse. Ved dets Ende findes oventil Analaabningen. 
Halevedhsengene eller den saakaldte Furca (Fig. 13), er 
Mnske korte, neppe dobbelt saa lange som brede og i Enden 
®tiaat afskaarne i Ketningen ndenfra indad. Til saeregne 
■ isatser er fsestede 4 standee, i Kanterne ta?t. og temmelig 
g 10 '*' c, lierede eller fjaerdannede Halebprster. At disse erde 
, .'derste og den inderste naisten indbyrdes at ens Lsengde, 
'°iimod den mestinderste er mere end dobbelt saa lang. 
1) " riul< ' 1 ' disse egentlige Haleborster, der hos det levende 
j ' l 'iser et overordentlig pragtfuldt Udseende ved det vex- 
mule regnbuefarvede Skjaer, som Cilierne frembyder, sees 
dt over den yderste en ganske kort ucilieret Borste, saint 
Description of the Female. — The body exhibits 
(see PI XIX, figs. 1, 2), as in all Calanoidea , a \eij 
distinct separation between the anterior and posterior divi- 
sions. The anterior division is oblong or rather some- 
what fusiform, about 3 times as long as broad, and tapers 
rapidly toward the anterior end, less so toward the pos- . 
terior. It consists of but 4 distinctly defined segments, 
the 2 last being connate. The foremost segment, which 
is longer than all the others taken together and comprises 
the 1st pedigerous segment, terminates anteriorly in a 
well-nigh straight, anterior -directed, acute projection, or 
rostrum. On the upper face of this projection, can be 
observed (fig. 3) a minute, scarcely appreciable ledge, to 
which are affixed 2 short bristles. In the Mediterranean 
form on the other hand, this ledge is drawn out as a 
strong, spiniform prolation, similar in appearance to the 
true rostrum. Tim last thoracic segment occurs, as usual, 
deeply emarginate in the middle, projecting on either side 
as an obtusely rounded, posterior - directed lobe, dense y 
covered with hair. The posterior division of the body is 
scarcely half as long as the anterior, and everywhere clothed 
with short hairs or delicate, diminutive spikes, wanting 
entirely, it would seem, on the latter. It consists of 4 
segments, exclusive of the 2 caudal appendages (furca). 
Of these the 1st is considerably larger than eithei of the 
others and constitutes below, anterior to the middle, a 
strong' hunched prolation, on which the generative orifice 
is located, and to which the single ovisac, as also, frequ- 
pntlv 2 or more spermatophores, occur attached. Hie 2 
succeeding segments arc simple cylindric, and about equal 
in length whereas the 4th is exceedingly short, and may 
therefore 'be easily overlooked. At the end, above, is seen 
the anal opening. 
The caudal appendages, or the so-called furca (fig. 13), 
are quite short, scarcely twice as long as broad and obhquely 
truncate at the extremity, from without to within. Affixed to 
special ledges, occur 4 strong caudal bristles, densely and rather 
coarsely ciliate along the margins - or plumous. Of these 
bristles the 2 outermost and the innermost are well-nigh 
mini ii'i leiigth, whereas that next to the innermost is more 
than twice as long. Exclusive of the said, strictly caudal 
bristles which, in the living animal, exhibit a most gorgeous 
colouring) produced by the shifting prismatic tints of the 
cilia? are seen, close above the outermost, a very short 
