/ 
75 
Beskrivelse af Hunnen. Legemets Form er (se PL 
^ IT. Fig, 5 0 g. (;), i;|]f a i ( | j Sammenligning mecl de fleste 
ouige Tanaider, temmelig underssetsig. idet den st 0 rste 
Hi'ede omtrent er Jig */s af Lmngden. og udnuerker sig, 
som ovenfor anfert. ved den usaedvanlig skarpt markerede 
Hegrsendsning af Forkroppens Segmentin'. 
Tntegmnenterne er sferdeles haarde, glatte og glind- 
seiule. uden nogen tydelig udprseget Slculptur. 
Hovedskjoldet er neppe ltengere end bredt, til Siderne, 
L'or det omslntter Gjellehulerne, staerkt buet, fortil temme- 
hurtigt afsmalnende og ender med en nsesten lige at- 
skaaret, eller kun meget svagt bugtet Panderand. 
lie 3 forste frie Segmenter er noget bredere end 
Hovedskjoldet, med Sidedelene noget fortilrettede og afrun- 
dede samt Lsengden mindre end den halve Brede. De 2 
derpaa folgende er noget lsengere og til Siderne jevnt buede 
e] lov nsesten af elliptisk Form. Siclste Forlcropssegment 
ondelig er lidt udvidet bagtil og bar den bagre Baud ganske 
sva kt concaveret. 
Bagkroppen, der omtrent indtager ‘/r a f Totallmngden, 
er u °get smalere end Forkroppen og bestaar som ssedvan- 
at 6 Segmenter, bvoraf de 5 forreste er meget korte 
° 1 ; indbyrdes af ens Uclseende, med jevnt tilrundede Epi- 
merer. Siclste Segment er fieri mod betydelig^stprre og bie- 
dme. oventil stajrkt bvadvet. naesten kngleformigt og bagtil 
> Hid ten endende med en stump Spids. Langs den ven- 
tla ^ Side af de 5 forreste Segmenter fiudes (se Fig. bog 8 ) 
vm stiorkt fremtrsedende Kjol, der for hvert Segment springer 
lieni i Form af en sammentrykt og noget bagudkrummet 
1 orn, der navnlig paa 2dot Segment er af betydelig Stdr- 
ielse. Sidste Segment er derimod (seFig. 8 ) paa den uedie 
Side i Midten noget forclybet og bagtil vinkelformigt ind- 
skaaret for at kunne optage de blode Dele, der omgivei 
den spaltformige Analaabning. 
Af 0ii ie fiiules ikke det allermindste Spor, og heller 
ikke bemierkes nogen fra. Hovedskjoldet tydeligt adskilte 
Hienlober. 
lste Par Folere (se Fig. 5 og 7 ). der udspringer tret 
sainnien fra Panderanden. er betydelig kortere end Hoved- 
s kjoldet og jevnt afsmalnende mod Enden. De ei som 
kos alE andre Tanaider simple og bestaar af 4 tydeligt 
1)e greendsede Led. kvoraf det iste er betydelig stprre end 
<lp »vrige. Sidste Led, der vel egentlig reprsesenterer den 
I'udinientsere Svobe, er af lineser Form, omtrent saa langt 
S0IU de 2 • foregaaende tilsamm'en og baerer paa Spidsen et 
Hnipp e a f tynde Borster. imellem bvilke ved strerk boi- 
storrelse viser sig et enkelt gjennemsigtigt Sandsevedhmng 
ILugtepapille). 
-det Par Fplere (ibid.) udspringer lige under lste 
Bar og er noget kortere Qg ke tydelig spinklere end disse. 
,( ' bestaar af G Led. bvoraf det lste er meget kort, medens 
Ide Led er stcerkt forlrenget. Sidste Led, er overordentlig 
lulet og kun synligt ved standee Forstorrelser; det brerer 
Description of the Female. — The form of the body 
(see PI. VII. figs. 5. (i) is. compared to that in most other 
Tanaids. rather thickset, its greatest breadth being about 
equal to one-fifth of the length; and. as stated above, it is 
characterized by the unusually well-marked separation of 
the segments belonging to the anterior division. 
The integuments are exceedingly hard, smooth, and 
lustrous, without any perceptible sculpturing. 
The cephalic shield scarcely at all longer than broad; 
toward the sides, where it encloses the branchial cavities, 
exceedingly arcuate, anteriorly rather rapidly tapeiing. and 
terminating in a well-nigh truncate, or at least but very 
slightly fiexuous. frontal margin. 
The 3 first free segments are a trifle broader than 
the cephalic shield, with the lateral portions somewhat an- 
teriorly directed and rounded off, as also with the length 
less than half the breadth. The 2 succeeding segments are 
somewhat longer, and, toward the sides, uniformly arched, or 
well-nigh elliptic in form. The last segment is a little dilated 
posteriorly, and lias the binder margin very slightly concave. 
The posteror division of the body, measuring about 
one-fourth of the total length, is somewhat more slender 
than the anterior, and. as usual, composed of 5 segments, 
of which the 5 foremost are very short, and similar in ap- 
pearance. with uniformly rounded epimera. The terminal 
segment, on the other hand, is considerably larger and 
broader, above exceedingly arched, almost globular, and 
posteriorly terminating in the middle with an obtuse point. 
Along the ventral side of the 5 foremost segments (see figs. 
6 8 ). runs an exceedingly prominent carina. which, at 
each segment, springs out iu the form of a compressed and 
somewhat posteriorly curving spine, that, more particularly 
on the 2 nd segment, is of considerable size. The last seg- 
ment is, however (see fig. 8 ), on the lower side, somewhat 
depressed in the middle, and posteriorly angular-incised, 
for the reception of the soft parts surrounding the fissure- 
like anal opening. 
Of eyes, not a trace can be found; nor do any dis- 
tinctly defined ocular lobes proceed from the cephalic shield. 
The 1st paii' of antenna' (see figs. 5. 7), springing, 
close together, from the frontal margin, are considerably 
shorter than the cephalic shield, and taper uniformly toward 
the extremity. As in all other Tanaids, they are simple, 
and consist of 4 distinctly defined joints, of which the 
1 st is considerably larger than the rest. The last joint, 
which, in a strict sense, probably represents the rudimentary 
flagellum, is linear in form, about as long as the 2 preced- 
ing joints taken together, and bears at the point a fascicle 
of slender bristles, between which, under a strong magni- 
fier can be seen a single translucent, sensory appendix ( ol- 
factory papilla). 
The 2nd pair Df anteniue (ibid.) have their origin 
immediately beneath the 1 st pair, and are somewhat shorter 
and considerably more feeble in structure than the latter. 
Tliev consist of G joints, the 1st very short, whereas the 
4th joint is greatly prolonged. The terminal segment is 
10 * 
