180 
Beskrivelse. Legemet er (se PI. XV, Pig. 1)- af 
temmelig spinkel Form og stserkt sammentrykt fra Siderne, 
dog med afrundet Ryg. 
Hovedet er omtrent af samme Laengde som de 2 for- 
reste Segmenter tilsammen og f'ortil afstumpet, uden tydeligt 
Pandehorn, og med Sidehjornerne jevnt afrundede, 
De 4 forreste Par Epimerer er temmelig sniaa, dog 
noget hoiere end Kroppen og Hasten indbyrdes af ens Stor- 
relse og Form; deres nedre Rand jevnt buet og ganske 
glat, uden Saugtakker. 
Paa alle Bagkropssegmenter, med Undtagelse af det 
sidste, gaar (se Fig. I h) den bagre Rand oventil ud i 2 
flade tiltrykte Torner, imellem hvilke endnu Andes et noget 
vexlende Antal (fra 2—4) betydelig mindre Torner eller 
Saugtakker. Den bagre Vinkel paa 2det og 3die Segments 
Sideplader er udtrukket i en skarp, noget opadkrummet 
Spids. 
Af Dine var ikke det allermindste Spor at se paa de 
friskt indfangede Individer. 
lste Par Folere er af betydelig Ltengdc, og ikke 
meget kortere end hele Legemet. Skaftet er stserkt for- 
lsenget og smalt, med de 2 forste Led storst og indbyrdes 
omtrent af ens Lamgde; sidste Led betydelig kortere. 
Svoben er noget lsengere end Skaftet, traadformig og meget 
tydeligt leddet, Leddenes Antal omkring 24. Bisvoben (se 
Fig. 1 a) er meget liden og kun sammensat af 3 Led. 
2det Par Folere er neppe mere end halvt saa lange 
som lste Par og har Svoben kun sammensat af 11 Led. 
Kindbakkerne (Fig. 1 b) er underssetsigt byggede med 
tydeligt afsat Tyggeknude. Palpen er meget liden, niesten 
rudimentser, med sidste Led simpelt tilspidset og ondende 
med 2 simple Borster. 
lste Par Kjfever (Fig. 1 c) har den egentlige Tyggelap 
bevaebnet med staorke Torner. Den indre Lap eller Basal- 
pladen er elliptisk og langs den indre Kant forsynet med 
talrige Fjaerborster. Palpen er meget tynd, med sidste 
Led smalt leformigt og i Spidsen bevaebnet med nogle tynde 
Torner. 
2det Par Kj sever (Fig. 1 d) har begge Lapper af 
oval Form og indbyrdes omtrent af ens Storrelse. 
Kjaevefodderne (Fig. 1 e) viser den saedvanlige Byg- 
ning. Den ydre Tyggelap er temmelig stor og i den indre 
Kant forsynet med en Rad af korte Torner. Palpens sidste 
Tmd er noget udvidet i Enden og her t;et borstebesat ; 
Endekloen forhohlsvis kort og konisk tilspidset. 
lste Fodpar (Fig. 1 f) er af temmelig svag Bygning 
og har Haanden neppe lsengere end det foregaaende Led, 
saint i Enden tvsert afskaaret, med forholdsvis kort Endeklo. 
2det Fodpar (Fig. 1 g) er af langt kraftigere Byg- 
ning, navnlig hos Hannen, og har Haanden af meget be- 
tydelig Storrelse og oval Form, med Griberanden noget 
Description. — The body (see PI. XV, fig. 1) is 
rather slender in form and greatly compressed from the 
sides, though with the back rounded. 
The head is about of the same length as the 2 an- 
terior segments taken- together, and obtuse in front, with- 
out a distinct rostrum and with the lateral corners evenly 
|| rounded. 
The 4 anterior pairs of epimera are rather small, 
though a trifle higher than the body and well-nigh uniform 
in size and shape; their lower margin is evenly arched, 
and quite smooth — not serrate. 
On all the abdominal segments, with the exception 
of the last, the posterior margin (see fig. h 1) juts out above 
as 2 flat, appressed spines, between which occur a some- 
what variable number (from 2 to 4) of considerably smaller 
spines, or denticles. The posterior angle of the lateral 
plates of the 2nd and 3rd segments is produced to a sharp, 
upward-curving point. 
Of eyes, not a trace could be detected in the recently 
taken specimens. 
The. 1st pair of antenme are of considerable length, 
but very little shorter than the whole body. The peduncle 
is exceedingly elongate and slender, with the 2 first joints 
largest and well-nigh equal in length; last joint a good 
deal shorter. The flagellum is somewhat longer than the 
peduncle, filiform, and very distinctly articulated: number 
of articulations about 24. The secondary flagellum (see 
fig. 1 a) is very small, and composed of only 3 articula- 
tions. 
The 2nd pair of antenme attain scarcely half the 
length of the 1st, and have the flagellum composed of only 
1 1 articulations. 
The mandibles (fig. 1 b) are thickset in structure, 
with the molar protuberance distinctly defined. The palp 
is very small, well-nigh rudimentary, with the last artic- 
ulation simple acute and terminating in 2 simple bristles. 
The 1st pair of maxilla; (fig. 1 c) have the true 
masticatory lobe armed with strong spines. The inner lobe, 
or basal plate, is elliptic, and, along the inner margin, 
provided with numerous plumose bristles. The palp is very 
slender, with the last articulation narrowly falciform, and 
armed at the point with a few delicate spines. 
The 2nd pair of maxillae (fig. 1 d) have both lobes 
oval in form and nearly equal in size. 
The maxillipeds (fig. 1 e) exhibit the usual structure. 
The outer masticatory lobe is rather large, and furnished 
last articulation of the palp is somewhat dilated at the 
extremity, and there densely beset with bristles. Terminal 
claw comparatively short and conically pointed. 
The 1st pair of legs (fig. 1 /) arc comparatively 
feeble in structure, and have the hand scarcely at all longer 
than the preceding joint, as also abruptly truncate at the 
extremity, with terminal claw comparatively short. 
The 2nd pair of legs (fig. 1 g) are of far more powerful 
structure, especially in the male, and have the hand of 
very considerable size and oval in form, with the palmar 
