117 
Findested. Stat. 366. 
B erase rkninger. Naervaerende characteristiske Art, 
som J e g i Begyndelsen holdt for ny, da jeg ikke havde An- 
tadning til at raadfrfre raig med Owens Arbeide, men som 
J (! g senere har overbovist mig om er identisk med den af 
' lam heskrevne Form, kjendes lot fra den anden Art af 
Stag ten, S. nodulosa Krover, ved sin mere undersaitsige 
Kropsfonn og navnlig ved den characteristiske Udrandning 
1 Spidsen af Endesegmentet, livorved dette synes at gaa 
U( 1 i 2 tilspidsede Fortsatser (heraf Artsbensevnelsen). 
Beskrivelse af Hunnen. Legemet er (se PL X, Fig. 
^1) Usaalvanlig kort og undersaetsigt og minder derfor noget 
1)111 samme hos visse Land-Isopoder. Af Form er det ariangt 
°'alt, uden nogen skarpt markeret Indsnoring mellein For- 
(, k Bagkrop, med den storste Brede, dor falder noget foran 
Midten, lidt storre end den halve Lamgde. Rygsiden er i 
^lidten staerkt hvselvet og noget ujevn, idet saavel de forreste 
som hagcrste Ranter af Segmenterne er stairkt fortykkede 
haevede, ligesom en mere eller mindre tydelig concentrisk 
B-ynkning bemserkes, navnlig henimod Siderne. 
Integumenterne er saerdeles haarde og faste saint viser 
' n n °get mat, ikke glindsende Overbade. 
Hovedet er omtrent dobbelt saa bredt som langt og 
' lser over den bagerste Del en tydelig Tvserfold, dor lige- 
S " U1 antyder et saerskilt Segment, svarende til Kjsevefpdderne. 
anderanden er i Midton tydoligt indbugtet, og Sidohjar- 
n,, rne trader from i Form af et naesten trekantet, vinklet, 
1 Endmi lige afskaaret Fremspring til liver Side af 2det 
Par Foleres Basis (se Fig. 25). 
Forkropssegmenterne er alle forsynede med jevnt af- 
1 11 "dodo og horizontal til Siderne udstaaende Epimerer, 
< ^' 1 ' imidlertid ikke ved nogen bemaerkelig Sutur er afgraend- 
S( ide fra det tilstodeudo Parti. De 3 bagerste Segmenter 
er n °get mindre end de ovrige og har Epimererne smalere. 
Bagkroppen er forholdsvis meget kort, |af trianguher 
orni, og bestaar kun af 2 Segmenter, et ganske kort basalt 
^ °t betydeligt storre terminalt. Disse Segmenter er dog 
<Un til Siderne tydeligt adskilte, medens de i Midtlinien 
^der sammen. Rygfladen af begge er ganske glat og Spid- 
a t Endesegmentet forsyuet mod et tydeligt Indsnit oiler 
drandning, der begrsendses til liver Side af et kort trian- 
Suloert Fremspring. 
Oinene der er beliggende paa Siderne af Hovedet, er 
temmelig store og najsten halvkugleformigt fremspringende, 
1Ued morktfarvet Pigment. 
lste Par Folere (se Fig. 24 og 25) er forholdsvis smaa, 
oiovrigt af den for Familien saedvanlige Bygning. 
Locality. — Stat. 366. 
Remarks. — The present characteristic species, which 
at first I regarded as new, having not had opportunity to 
consult Professor Owen’s work, but which I have subse- 
quently found to be identical with the form he has described, 
is easily distinguished from the other species of the genus, 
S. nodulosa Kriiyer, by its relatively more thickset form of 
body, and in particular by the characteristic emargination 
at the point of the terminal segment, giving to the latter 
the appearance of jutting forth as 2 acute, projections (hence 
the specific designation). 
• Description of the Female. — The body (see PI. X, 
fig. 24) unusually stout and thickset, and accordingly not 
unlike that in certain land Isopods. The form is oblongo- 
oval, without any sharply defined instrietion between the 
anterior and posterior divisions of the body, the greatest 
breadth — which occurs a little anterior to the middle — 
slightly exceeding one-half of the length. The dorsal side 
exceedingly arched in the middle and somewhat uneven, 
both the anterior and posterior edges of the segments being 
very considerably inspissated and raised; and a more or 
less distinct concentric corrugation is also observed, in 
particular toward the sides. 
The integuments are extremely hard and compact, 
exhibiting a somewhat dull, by no means a lustrous surface. 
The head is about twice as broad as long, and has, 
above the posterior part, a distinct transverse fold, that 
indicates, as it were, a separate segment, corresponding to 
the maxillipeds. The frontal margin is distinctly incurved 
in the middle, the lateral corners jutting forth on either 
side of the base of the 2nd pair of antennae (see fig. 25) 
in the form of a well-nigh triangular projection, abruptly 
truncate at the extremity. 
The segments of the anterior division are all furnished 
with uniformly rounded and, toward the sides, horizontally 
projecting epimera, which, however, exhibit no distinct 
suture separating them from the lateral parts. The 3 pos- 
terior segments are somewhat smaller than the others, and 
have more narrow epimera. 
The posterior division of the body is comparatively 
very short, triangular iri form, and consists of only 2 seg- 
ments, an exceedingly short basal and a much larger term- 
inal segment. These segments, however, are at the sides 
only, distinctly separated, being confluent along the medial 
line. The dorsal surface of both is quite smooth, and the 
point of the terminal segment lias a distinct incision or 
emargination, bounded on either side by a short triangular 
projection. 
The eyes, placed at the sides of the head, are rather 
large and well-nigh hemispherically protruding, with a dark- 
coloured pigment. 
The 1st pair of antennae (see figs. 24, 25) are com- 
paratively small, exhibiting for the rest the structure char- 
acteristic of the family. 
/ 
