63 
Be frie Forkropssegmenter er meget smale, nsesten 
kaandformige og saagodtsom ggnske glatte. Man bemserker 
•dene paa de 3 bagerste til liver Side et meget lidet tand- 
loi'migt Fremspring og paa sidste Segment desuden i Midten 
en opadrettet Torn. Epimererne er noget udstaaende til 
Siderne og paa de 4 forreste Segmenter jevnt afrundede 
me d delvis saugtakket Rand. Sidste Segments Epimerer er 
udtrukne i en kort bagtil og noget udadrettet Spids. 
Bagkropssegmenterne viser den ssedvanlige ligesom 
knudrede Form, idet de saavel oventil som nedentil er 
stmrkt udrandede, med de bagre Sidehjprner tilspidsede og 
noget udstaaende. Paa ethvert af de 2 forreste Segmenter 
benuerkes ved den bagre Rand oventil 2 symetrisk stillede 
tdspidsede Tomer, medens der paa de 2 falgende kun findes 
Hli enkelt saadan stillet i Midtlinien. Paa de 2 sidste Seg- 
menter er der en median Laengderad af Here (4—5) Torner. 
Besuden findes til Siderne ligesom nedentil nogle mindre 
tvdelige Smaatsender. Nsestsidste Segment er af alle det 
Imngste. Sidste Segment er af den ssedvanlige noget flad- 
tnykte, femkantede Form og er ovenfra seet bredere end 
det toregaaende. 
At noget tydeligt udviklet 0ie var intct Spor at ' op- 
dage paa det friskt indfangede Exemplar. Yistnok findes 
Vp d Enden af Frontallappen (se Fig. 1) den ssedvanlige 
Bielob; men denne er ganske Had, og indenfor den sees 
mtet Pigment eller andre Synselementer. 
lste Par Folere bar Skaftet af forboldsvis kraftig 
Bvgning og kjendeligt overragende Spidsen af det saakaldte 
Pandeborn. Derimod er de to Svpber sserdeles korte. 
2det Par Fplere og Munddelene kunde ikke paa det 
oneste forebggende Exemplar npiere underseges. 
lste Fodpar er af den ssedvanlige spinkle Bygning og 
dge udstrakt omtrent af Forkroppens Lsengde. Basalleddet 
1 1 teinnielig stort, men noget kortere end de ovrige tilsannnen, 
.10' nt atsmalnende mod Enden og i den indre Kant grovt 
An det. 4de og 5te Led er meget tynde og omtrent ind- 
b.} 1 des af ens Lsengde; sidste Led kjendeligt kortere end 
disse. 
2det Fodpar er neppe mere end halvt saa langt, 
koniskt tilspidset i Enden og bar de 2 ydre Led ganske 
korte. 
Be 2 folgende Fodpar er at forboldsvis robust Byg- 
'dng og tset borstebesatte. 
Sidste Fodpar er betydelig mindre end disse, meget 
Pndt og mindre rigeligt borstebesat. 
Til Basis af 3die og 4de Fodpar var bos det under- 
sogte Individ faestet en ufuldkomment udviklet konisk Exo- 
P°dit 0 g til de 2 forste Bagkropssegmenter et Par ligeledes 
ufuldkomment udviklede Buglemmer, hvoraf fremgik, at 
Individet var en endnu ikke skegtsmodent udviklet Han. 
Bet midterste Halevedlueng er stserkt forkenget, nsesten 
;,t Bagkroppens halve Lsengde og af den .ssedvanlige smale, 
The free segments of the cephalo-thorax are exceedingly 
narrow, well-nigh riband-shaped, and almost quite smooth. 
On the 3 posterior segments, is seen, issuing from either 
side, a minute dentiform projection; and on the last seg- 
ment, in the middle, also an upward-directed spine. The 
epimera jutting a little toward the sides, and, on the 4 
anterior segments, uniformly rounded, with the maigin paitly 
serrate. The epimera of the last segment are produced 
to a posteriorly and somewhat outward-extending point. 
The abdominal segments exhibit the usual, as it were, 
nodulose character, being, both above and below, very consider- 
ably emarginate, with the posterior lateral corners acuminatelj 
pointed, and somewhat projecting. On each of the 2 anterior 
segments, are observed above, springing from the posterior 
margin, 2 symmetrically disposed, acute spines, whereas on the 
2 succeeding ones, a single spine only occurs, in the medial 
line. On the 2 last segments, there is a median longitudinal 
row of spines (4—5), and, moreover, toward the sides, as 
also below, a few less distinctly developed denticles. The 
penultimate segment is the longest of all. The last segment 
has the usual somewhat depressed, pentagonal form, and, 
viewed from above, appears broader than the preceding. 
Of a distinctly developed eye no trace could be detected 
in the recently taken specimen. True, the usual ocular 
track occurs at the extremity of the frontal lobe (see fig. 1); 
it is however quite flat, and within neither pigment nor 
any other visual element can be seen. 
The peduncle of the 1st pair of antenna is compara- 
tively powerful in structure, and projects perceptibly over 
the point of the so-called rostrum. The two flagella are, 
on the other hand, exceedingly short. 
The 2nd pair of antennae and the oral appendages 
could not be accurately examined in the only specimen we 
succeeded in obtaining. 
The 1st pair of legs have the usual slender structure, 
and, when fully extended, about equal the anterior division 
of the body in length. The basal joint is comparatively 
large, but somewhat shorter than the others, taken together, 
tapering uniformly toward the extremity, and, along the 
inner margin, coarsely dentate. The 4th and 5th joints are 
I exceedingly slender, and relatively about equal in length; 
last joint perceptibly shorter than either ol these. 
The 2nd pair of legs are scarcely more than half as 
long as the 1st, conically pointed at the extremity, and 
have the 2 outer joints quite short. 
The 2 succeeding pairs of legs are comparatively 
robust in structure, and densely beset with bristles. 
The last pair of legs are considerably smaller than 
these, exceedingly slender, aud less abundantly furnished 
with bristles. 
To the base of the 3rd and 4th pairs of legs was 
attached, in the specimen examined, an imperfectly developed 
conical exopodite, and to the 2 first abdominal segments a 
pair of likewise imperfectly developed pleododa, showing 
the individual to have been a not yet sexually mature male. 
The telson is greatly produced, almost half as long 
as the posterior division of the body, and of the usual 
